Worked on plenty of these two-barrel 455s back in the day. They were a strange decision by GM, but honestly, they were easier to keep running right compared to the four-barrel counterparts. Less fiddling with jets, more consistent power delivery at lower RPMs. These two-barrels might not have won any drag races, but they kept a lot of family sedans on the road longer than you'd expect. Buick’s version was my favorite-tons of torque and built for smoothness
1973 Delta 88 with the two-barrel 455. Growing up, I remember the long road trips we used to take in that car. It was like riding on a cloud. The engine wasn’t the most powerful, but it was so reliable and had that 'effortless' kind of power that made it perfect for those highway cruises.
I rebuilt a junkyard 455 4 bbl Pontiac with a mild cam to replace the stock 350 2 bbl in my 70 Pontiac esprit and installed a free flowing dual exhaust with headers . Traction was non existent !!! Everyone else was doing break stands to try to smoke their tires and my bird would melt the tires with the speedometer shooting to the 160 mark right through the 3 gears of the automatic turbo 350 just by flooring it in drive .. Unbelievable power and it would top out above 160 on the speedo as long as the headers weren't crushed which I was constantly fixing because the car sat to low and would drag on speed bumps ... The 2.73 rear gears allowed that car to cruise easily over 130 mph quarter throttle in the primaries easier then most cars of the time which was the mid 80s could do 65 mph ... Those engines made effortless low and mid range power and the smart move was not to go with a giant cam which many would choose and their engines would have no bottom or mid range power .. Mild cams , big cubes , and free flowing exhaust was a most powerful, unstoppable ,dependable , and durable engine choice ...😮
It'sWow! I did that with a 460 in a dentside half ton. Also 270 gears and the old C6 tranny. It was truely amazing! Great story friend! Mild cam, 460 4bbl, headers and 3 inch dual exhaust, weiland aluminum intake too. She was a fast machine for a truck. It's on my youtube channel listed above.
My uncle had a 1974 LeSabre with the two-barrel 455, and I remember it being the smoothest ride ever. Even with just 175 horsepower, that car had such a powerful low-end grunt. You could just feel the torque when cruising around town...
Jeffrey had a 1968 Buick with 455 Rocket. In big winter storm, seeing 4x4 trying to pull vehicles out of the ditch, Jeffrey just plowed into the ditch with the Buick, rolled down window and asked if everything was ok. Jeffrey then floored it and drove out through 3 feet of snow back onto the road.
Actually if you stay out of it the quadrajet had smaller primaries and would actually give better milage and better throttle response than the two barrel carb .. true story..
Nothing weird about BOP 455s. There were plenty of them made, and in the 70s a lot of motors got the squeeze because of the oil crisis and new emissions regulations.
I suspect the decision to use the 2gc 2bbl instead of the quadrajet was all about the up front costs. As mentioned in the comments a q jet actually has smaller primaries and in theory should have better response and economy. The existence of the half a q jet dual jet carb that replaced the 2GC reinforces this assertion. BUT the quadrajet was a complicated and expensive carb, combine this with the fact that the largely elderly clintel these cars were marketed towards would have absolutely believed that more barrels = more gas and I can see why GM did this. Chevy also had a 2bbl Big block 402 and ford and Chrysler were absolutely terrified to put a 4bbl on anything mainstream so you had tons of 2bbl FE's and RB's that were only a little smaller than these. So these arent really THAT weird in context. It only seems weird because GM would put a q jet on ANYTHING.
GM even made 2bl Quadajets, they were literally 4bl quadrajets with the 2 vacume 2ndary butterflys permanently locked closed & much of the mech underneath removed.
@@mickvonbornemann3824They were terribly limited by low cfm. Like pulling a thick milkshake thru a tiny straw. The Rochester 2gc had much better air flow.
From what I recall about the 455 Oldsmobile, it was just a taller deck from the 260-403. The heads would interchange between the two deck heights, so no small vs big block like what the Chevrolet had. Another example, just like the short and tall deck so called Windsor 302 / 351 engines.
I didn’t know that the heads would interchange between the small and big block Olds. I know they were very similar and the intakes were wider on the big blocks. Was Buick the same way? Pontiacs are famously known to have the exact same external dimensions on all V8s from the 326-455.
Ford also put two barrels on some big blocks, including some 429s that wound up in police cars. I also recall a 390 two barrel available in police cars. Chrysler had some large per V8s with two barrels too, Anyway, 455s and the like with two barrel carbs weren’t muscle car motors. They were torque producers for daily drivers.
This narrator sounds like Casey Kasem's brother. Coming up next ... a long distance dedication from a lonely housewife in Iowa to the GM mechanic she almost fell in love with ...
Comment at 1:00: "would you drive one of these strange beasts?" Well, it's not a 455, but it's immediate predecessor, the olds 425 2bbl, that I am currently blueprinting, refining, rebuilding, and getting ready for a truly nasty resurrection in it's host car, a 1965 dynamic 88 convertible that I pulled from a local yard. Yes, it is now 4bbl though. Just picked up a new bellhousing for a manual conversion, and am getting ready to start really slamming her together for her 60th birthday. So yeah, I definitely would.
My parents had a 1965 Dynamic 88 with a 425 two barrel with single exhaust. It was a hard top in dark blue. I remember it as a very smooth running car. It was our first car with AC. I wish I had it today. Best of luck on your project. They are beautiful cars.
Well this one started off as a 2bbl single exhaust. It had also blown a piston pretty badly, but i've repaired the damage. Now after all the blueprinting, weight reduction, and balancing, she has a torker intake, a set of pro comp headers, a proper 4bbl cam, bullt and ported original heads with a nice roller rocker setup and oversized ferrea valves, and greatly improved oil drainback she should be a real ripper, especially once I get a good manual behind it...
Thank for a great video; I think it’s probably a mistake to think of the two-barrel 455 engines as actual muscle car engines, because there state-of-tune is that for a big saloon car, as a big fan of the late sixties Catalina/Bonneville and Olds 88/98 series, I have always felt that the two-barrel big-block option was actually an eminently sensible thing to do.
Thank you for your thoughtful comment! You make a great point about the two-barrel 455 engines. While they might not fit the traditional "muscle car" mold due to their milder state of tune, they were perfect for delivering effortless torque in the big saloon cars you mentioned, like the Catalina, Bonneville, and Olds 88/98. These engines were built for smooth cruising, towing, and durability-ideal for families or long road trips back in the day. That said, their potential was undeniable. With a simple swap to a four-barrel carb and some mild tuning, these big blocks could transform into beasts, showcasing the versatility that made them so beloved. It’s another example of how GM engineered engines to suit a wide range of drivers’ needs. We’d love to hear everyone’s thoughts on this-comment, share, and subscribe for more muscle car memories! Hope to see you in the next video. Have a good day...
455 4bbl quadrajet 3-1/2 high intake and dual exhaust. (Or edlbrocks big barrel) POWER HOUSE for my 74 cutlass supreme. I love it! Use traction bars or you'll just burn off rubber playing sit and spin. Lol
Regardless of what the manufacturer try to accomplish, the two barrel carburetors under normal driving, used more fuel than the 4 barrel carburetors The jetting and CFM was larger on the two barrel, then the primary side of the 4 barrels and Pontiac Oldsmobile and Buick were using two barrel carburetors on 400 in.³ motors many years before that and coming from that era, I think the Pontiac 455. What is the king of the streets of the 455s
Unlike Chevrolet, the other GM divisions didn't really make a "Big Block" or "small block". If you just glanced under the hood you couldn't tell if it was a 455 or a 350.
And I agree with the comments below. The Rochester 2GV was a far better choice on the street for the land yachts with the 455 motors. There was no transition point for the secondaries during harder acceleration or passing and they had a much better feel but the primary side of a Quadrajet was far better at mixing air/fuel on the lower throttle settings and would out-do the 2GV in overall fuel economy if one stayed out of the secondaries. I've had both on the Olds 455 in a Delta-88 and while the 2GV does have a more linear feel without the secondaries at 65% throttle the Quadrajet did better on the streets in terms of overall fuel economy. One thin to note is a 2GV was rated for 500 CFM but at 3"Hg and the Quadrajet anywhere from 600-850 CFM at 1.5"Hg drop at the base. A significant difference in the real world.
Something to keep in mind: very few of these engines will accept a standard transmission, the cranks were never drilled for a pilot bushing (bearing). An interesting swap is a Buick engine in a Chev/GMC pick-up. You don't have to stand on your head to change the spark plugs.
Yes very true about adapting a Muncie 4 Speed behind these 455's... But I had Starfire Oldsmobile that we modified to accept the Muncie M-22 Transmission..! Back in the 1960's... The clutch pedal and linkage were the hardest thing to find... Believe it or not, we had an Oldsmobile dealer where the parts manager was a Drag Racer... It was actually available, General Motors had race division back then... We were able to order those parts... Right through the Oldsmobile parts guy..!
Pilot bearing : We where able to measure everything, go to a bearing supplier... Ordered the roller bearing by dimensions... That's how we solved pilot bearing problem... CrazyHorse Speed Shop N.J. usa
Honestly, the two barrel 455's and 400's weren't better on gas than the 4 barrels and weren't much fun to drive. They more or less replaced high compression 350 4 barrels. The low compression made them pass smog laws that the high compression engines struggled with. As to the Olds 455 2 bbl in the 1970 Delta 88, it literally ran out of air at 105 MPH. And trust me we tried, but it just hit a wall. It got there fast enough, but that was it. There was no more no matter how much road you had and how much you pushed the peddle through the floor. As to the 1976 Buick 455 4 bbl I have one in a 1973 Electra 225. Without cats (not required in the 1973 car) it easily passed smog for a 1990. Of course the compression is around 7.5 to 1 and it actually gets about 17 mpg with EGR enabled. As to the 2 bbl Pontiacs, I had a 1970 Bonneville with a 400 2bbl with the duel exhaust. It was lethargic at best and got pretty marginal gas mileage. Simply put the 2 bbl GM big blocks were a smog friendly replacement for high compression small blocks. Otherwise, and to be fair, they are smooth running quiet engines that didn't do anything that badly. But there was a reason they died out... the newer fuel efficient Rochester 4 bbls blew them away in terms of performance and economy. Just another smog project gone marginally wrong with the help of bean counters.
I'm guessing this video is geared more towards people that are 30 years old or younger ,and know nothing about the gas crisis , or GM 455s, or maybe even cars in general. If you're old enough to have grown up without a smartphone stuck in your hand all the time, chances are good, you know about these engines.
I'm not sure it was a fuel economy move more than to get these engines to run on more affordable regular gas instead of premium. The primaries on a Q-jet are way more fuel efficient than a 500 cam 2BBL. Plus 2BBL Rochesters were way cheaper to build than a Q-jet.
Mr. B. Here ! 🍩☕️👀😎👍 : Weird ( LOL ) un-like today the key word is ( Choices ) most consumers were informed on how they would make a big purchase, many today believe the ( BS ) the salesperson hands out ! ( Choices ) . Have a nice day ! 🍩☕️👀😎👍
Thank you for your feedback! It’s always great to hear different perspectives from passionate car enthusiasts like you. To clarify, GM’s 445 V8s were unique in several ways, especially for their era. While they might not seem “quirky” by today’s standards, their versatility, durability, and ability to handle both 2-barrel and 4-barrel carburetors gave them a wide appeal. The 2-bbl setup focused on efficiency, while the 4-bbl offered more power for those who wanted to push the limits. Showing 4-bbls while discussing 2-bbls might have caused some confusion, but it highlights how these engines catered to a variety of builds and applications, from family sedans to muscle cars. We love diving into these details, and our community thrives on conversations like this. Keep the comments coming, and let’s uncover more together! Don’t forget to comment, share, and subscribe to American Muscle Cars. Hope to see you in the next videos. Have a good day....
well, heh. Not the 455 but the....400? Friend had a 67 Catalina and it really performed, had the 2 barrel Rochester. My fam bought at 68 Bonneville with the 4 barrel Quadrajet, with the small primaries and big secondaries, and one pump. Well it sucked for the entire 6 years we owned it. That carb was a total POS. 50 years later I still have scar tissue over that. What a piece of crap.
There was something obviously wrong with that Q Jet. While they are finicky, when operating properly they are quite reliable and were the best 4bbl on the market for power and economy in their day. While probably not the case in your experience, Q Jets got a bad reputation because each one was specifically tuned for its original application. People would go to a junkyard and looking for a carb for their 69 GTO with a 400. They’d take on off a 74 Le Mans with a 400, rebuild it and wonder why their GTO now ran like crap. They can be modified for use on anything but they are very complicated. It’s not as simple as replacing jets in a Holley.
who ever came up with tis is full of crap, any body taht knows Carberators will tell you that a 4 barrel will get better a milage and be more responsive until you stand on the gas. you may be able to fil this BS to someone that cut their teeth on Fuel injection, but all carb guys know the Smaller venturis in a 4 barrel will have better response than a two barrel.
"Anybody" who paid attention in elementary school can write a sentence using correct grammar and punctuation. So I wouldn't consider you to be the expert on much else.
@Atomwaffen-y3s Regardless of your unsolicited opinions on literacy, he is 100% correct. Don't be an ass. Especially when you don't understand the subject...
![ARGENTINA vs. PERÚ [1-0] | RESUMEN | ELIMINATORIAS SUDAMERICANAS | FECHA 12](http://i.ytimg.com/vi/xtI25ENDDSY/mqdefault.jpg)
Worked on plenty of these two-barrel 455s back in the day. They were a strange decision by GM, but honestly, they were easier to keep running right compared to the four-barrel counterparts. Less fiddling with jets, more consistent power delivery at lower RPMs. These two-barrels might not have won any drag races, but they kept a lot of family sedans on the road longer than you'd expect. Buick’s version was my favorite-tons of torque and built for smoothness
Well said, love Buick V8s as well
1973 Delta 88 with the two-barrel 455. Growing up, I remember the long road trips we used to take in that car. It was like riding on a cloud. The engine wasn’t the most powerful, but it was so reliable and had that 'effortless' kind of power that made it perfect for those highway cruises.
I know exactly what you mean. Full frame RWD cars were the best! I still prefer RWD over FWD.
I rebuilt a junkyard 455 4 bbl Pontiac with a mild cam to replace the stock 350 2 bbl in my 70 Pontiac esprit and installed a free flowing dual exhaust with headers . Traction was non existent !!! Everyone else was doing break stands to try to smoke their tires and my bird would melt the tires with the speedometer shooting to the 160 mark right through the 3 gears of the automatic turbo 350 just by flooring it in drive .. Unbelievable power and it would top out above 160 on the speedo as long as the headers weren't crushed which I was constantly fixing because the car sat to low and would drag on speed bumps ... The 2.73 rear gears allowed that car to cruise easily over 130 mph quarter throttle in the primaries easier then most cars of the time which was the mid 80s could do 65 mph ... Those engines made effortless low and mid range power and the smart move was not to go with a giant cam which many would choose and their engines would have no bottom or mid range power .. Mild cams , big cubes , and free flowing exhaust was a most powerful, unstoppable ,dependable , and durable engine choice ...😮
It'sWow! I did that with a 460 in a dentside half ton. Also 270 gears and the old C6 tranny. It was truely amazing! Great story friend!
Mild cam, 460 4bbl, headers and 3 inch dual exhaust, weiland aluminum intake too. She was a fast machine for a truck. It's on my youtube channel listed above.
My uncle had a 1974 LeSabre with the two-barrel 455, and I remember it being the smoothest ride ever. Even with just 175 horsepower, that car had such a powerful low-end grunt. You could just feel the torque when cruising around town...
Jeffrey had a 1968 Buick with 455 Rocket. In big winter storm, seeing 4x4 trying to pull vehicles out of the ditch, Jeffrey just plowed into the ditch with the Buick, rolled down window and asked if everything was ok. Jeffrey then floored it and drove out through 3 feet of snow back onto the road.
You know the Buick 455 was not much heavier than the SBC
I remember that guy...
I don't have the 455, since my Buick Wildcat is a 1966. I got the 425 Nailhead. Also a great engine!
Actually if you stay out of it the quadrajet had smaller primaries and would actually give better milage and better throttle response than the two barrel carb .. true story..
Starting in 1972 the HP ratings were measured as Net as opposed to the prior Gross rating. They are not comparable means of measurements.
Nothing weird about BOP 455s. There were plenty of them made, and in the 70s a lot of motors got the squeeze because of the oil crisis and new emissions regulations.
A friend parents had a 71 2bbl 455 in a Delta 88 station wagon. We used to see what the top end was. It would do 120 mph.
A video guide on making something out of nothing
I suspect the decision to use the 2gc 2bbl instead of the quadrajet was all about the up front costs. As mentioned in the comments a q jet actually has smaller primaries and in theory should have better response and economy. The existence of the half a q jet dual jet carb that replaced the 2GC reinforces this assertion. BUT the quadrajet was a complicated and expensive carb, combine this with the fact that the largely elderly clintel these cars were marketed towards would have absolutely believed that more barrels = more gas and I can see why GM did this. Chevy also had a 2bbl Big block 402 and ford and Chrysler were absolutely terrified to put a 4bbl on anything mainstream so you had tons of 2bbl FE's and RB's that were only a little smaller than these. So these arent really THAT weird in context. It only seems weird because GM would put a q jet on ANYTHING.
GM even made 2bl Quadajets, they were literally 4bl quadrajets with the 2 vacume 2ndary butterflys permanently locked closed & much of the mech underneath removed.
@@mickvonbornemann3824They were terribly limited by low cfm. Like pulling a thick milkshake thru a tiny straw. The Rochester 2gc had much better air flow.
@@unclebob7937 i can imagine
From what I recall about the 455 Oldsmobile, it was just a taller deck from the 260-403. The heads would interchange between the two deck heights, so no small vs big block like what the Chevrolet had. Another example, just like the short and tall deck so called Windsor 302 / 351 engines.
I didn’t know that the heads would interchange between the small and big block Olds. I know they were very similar and the intakes were wider on the big blocks. Was Buick the same way? Pontiacs are famously known to have the exact same external dimensions on all V8s from the 326-455.
@@mikee2923 You can put BBO heads on the SBO,but you loose a LOT of compression!!!
Who "Never" heard of a 455?
Ford also put two barrels on some big blocks, including some 429s that wound up in police cars. I also recall a 390 two barrel available in police cars. Chrysler had some large per V8s with two barrels too, Anyway, 455s and the like with two barrel carbs weren’t muscle car motors. They were torque producers for daily drivers.
This wasn't weird it was only a cost cutter!
When they dropped the Compression Ratios in '71 on the 455 Olds from 10.25:1 to 8.5:1,all they did was put the 4bbl setup on the 2bbl engine.
This narrator sounds like Casey Kasem's brother. Coming up next ... a long distance dedication from a lonely housewife in Iowa to the GM mechanic she almost fell in love with ...
Comment at 1:00: "would you drive one of these strange beasts?" Well, it's not a 455, but it's immediate predecessor, the olds 425 2bbl, that I am currently blueprinting, refining, rebuilding, and getting ready for a truly nasty resurrection in it's host car, a 1965 dynamic 88 convertible that I pulled from a local yard. Yes, it is now 4bbl though. Just picked up a new bellhousing for a manual conversion, and am getting ready to start really slamming her together for her 60th birthday. So yeah, I definitely would.
My parents had a 1965 Dynamic 88 with a 425 two barrel with single exhaust. It was a hard top in dark blue. I remember it as a very smooth running car. It was our first car with AC. I wish I had it today. Best of luck on your project. They are beautiful cars.
Sounds awesome, I used to have a 66 olds dynamic 88 back in the 80s / 90s
And I had never seen one like it since. Great poor man's muscle car
Well this one started off as a 2bbl single exhaust. It had also blown a piston pretty badly, but i've repaired the damage. Now after all the blueprinting, weight reduction, and balancing, she has a torker intake, a set of pro comp headers, a proper 4bbl cam, bullt and ported original heads with a nice roller rocker setup and oversized ferrea valves, and greatly improved oil drainback she should be a real ripper, especially once I get a good manual behind it...
Thank for a great video; I think it’s probably a mistake to think of the two-barrel 455 engines as actual muscle car engines, because there state-of-tune is that for a big saloon car, as a big fan of the late sixties Catalina/Bonneville and Olds 88/98 series, I have always felt that the two-barrel big-block option was actually an eminently sensible thing to do.
Thank you for your thoughtful comment! You make a great point about the two-barrel 455 engines. While they might not fit the traditional "muscle car" mold due to their milder state of tune, they were perfect for delivering effortless torque in the big saloon cars you mentioned, like the Catalina, Bonneville, and Olds 88/98. These engines were built for smooth cruising, towing, and durability-ideal for families or long road trips back in the day.
That said, their potential was undeniable. With a simple swap to a four-barrel carb and some mild tuning, these big blocks could transform into beasts, showcasing the versatility that made them so beloved. It’s another example of how GM engineered engines to suit a wide range of drivers’ needs.
We’d love to hear everyone’s thoughts on this-comment, share, and subscribe for more muscle car memories! Hope to see you in the next video. Have a good day...
My best friend has a 1970 455 Cutlass SX that is a factory 2 barrel car. That has to be a rare intake manifold
455 4bbl quadrajet 3-1/2 high intake and dual exhaust. (Or edlbrocks big barrel) POWER HOUSE for my 74 cutlass supreme. I love it! Use traction bars or you'll just burn off rubber playing sit and spin. Lol
I loved my 1971 Buick Riviera with a 455 four barrel it was a beautiful, cruising car that had animal horsepower and torque
Regardless of what the manufacturer try to accomplish, the two barrel carburetors under normal driving, used more fuel than the 4 barrel carburetors The jetting and CFM was larger on the two barrel, then the primary side of the 4 barrels and Pontiac Oldsmobile and Buick were using two barrel carburetors on 400 in.³ motors many years before that and coming from that era, I think the Pontiac 455. What is the king of the streets of the 455s
Unlike Chevrolet, the other GM divisions didn't really make a "Big Block" or "small block". If you just glanced under the hood you couldn't tell if it was a 455 or a 350.
And I agree with the comments below. The Rochester 2GV was a far better choice on the street for the land yachts with the 455 motors. There was no transition point for the secondaries during harder acceleration or passing and they had a much better feel but the primary side of a Quadrajet was far better at mixing air/fuel on the lower throttle settings and would out-do the 2GV in overall fuel economy if one stayed out of the secondaries. I've had both on the Olds 455 in a Delta-88 and while the 2GV does have a more linear feel without the secondaries at 65% throttle the Quadrajet did better on the streets in terms of overall fuel economy.
One thin to note is a 2GV was rated for 500 CFM but at 3"Hg and the Quadrajet anywhere from 600-850 CFM at 1.5"Hg drop at the base. A significant difference in the real world.
Something to keep in mind: very few of these engines will accept a standard transmission, the cranks were never drilled for a pilot bushing (bearing).
An interesting swap is a Buick engine in a Chev/GMC pick-up. You don't have to stand on your head to change the spark plugs.
Yes very true about adapting a Muncie 4 Speed behind these 455's... But I had Starfire Oldsmobile that we modified to accept the Muncie M-22 Transmission..! Back in the 1960's... The clutch pedal and linkage were the hardest thing to find... Believe it or not, we had an Oldsmobile dealer where the parts manager was a Drag Racer... It was actually available, General Motors had race division back then... We were able to order those parts... Right through the Oldsmobile parts guy..!
Pilot bearing : We where able to measure everything, go to a bearing supplier... Ordered the roller bearing by dimensions... That's how we solved pilot bearing problem...
CrazyHorse Speed Shop N.J. usa
I love the way 455quadrajet word rolls off the tongue
Honestly, the two barrel 455's and 400's weren't better on gas than the 4 barrels and weren't much fun to drive. They more or less replaced high compression 350 4 barrels. The low compression made them pass smog laws that the high compression engines struggled with.
As to the Olds 455 2 bbl in the 1970 Delta 88, it literally ran out of air at 105 MPH. And trust me we tried, but it just hit a wall. It got there fast enough, but that was it. There was no more no matter how much road you had and how much you pushed the peddle through the floor.
As to the 1976 Buick 455 4 bbl I have one in a 1973 Electra 225. Without cats (not required in the 1973 car) it easily passed smog for a 1990. Of course the compression is around 7.5 to 1 and it actually gets about 17 mpg with EGR enabled.
As to the 2 bbl Pontiacs, I had a 1970 Bonneville with a 400 2bbl with the duel exhaust. It was lethargic at best and got pretty marginal gas mileage.
Simply put the 2 bbl GM big blocks were a smog friendly replacement for high compression small blocks. Otherwise, and to be fair, they are smooth running quiet engines that didn't do anything that badly. But there was a reason they died out... the newer fuel efficient Rochester 4 bbls blew them away in terms of performance and economy. Just another smog project gone marginally wrong with the help of bean counters.
Cheaper to put on 2 barrel vs a 4 barrel instead of a new engine design why not use the inventory?
Ford had a 429 2 venturi also.
This repeats saying the same things over again that I already heard in the introduction.
Lame writing.
I'm guessing this video is geared more towards people that are 30 years old or younger ,and know nothing about the gas crisis , or GM 455s, or maybe even cars in general.
If you're old enough to have grown up without a smartphone stuck in your hand all the time, chances are good, you know about these engines.
Just a guess but I’m thinking the video is referring to the 2bbl versions.
Mr. B. Here ! 🍩☕️👀😎👍 : Weird ( LOL ) key word here is choices ! Something that is long gone like the vehicles in this video ! 🍩☕️👀😎👍 have a nice day !
My best friend has a Boneville that came with a 455 2bbl. Hauls ass
I'm not sure it was a fuel economy move more than to get these engines to run on more affordable regular gas instead of premium. The primaries on a Q-jet are way more fuel efficient than a 500 cam 2BBL. Plus 2BBL Rochesters were way cheaper to build than a Q-jet.
The 2bbl Engines had slightly lower Compression and could run on Regular Gas.
That would probably be a reason for lots of people choosing that option, over the performance engines.
@@mylanmiller9656
it offered a lot of Torque and was a lot less costly to operate
drove and had dozens of 455's
I tied the secondaries shut on the quadrajet and my electra 225 would still peg the 130mph speedometer.
I had a 1966 Olds 88 that had a 425 2bl that ran on premium fuel. I don''t know the reasoning for the high compression.
I don't think buick ever made a 2 bbl 455.
I never saw one. Every one I saw had a 4bbl. So you may be right.
They wanted economy, lol.
Mr. B. Here ! 🍩☕️👀😎👍 : Weird ( LOL ) un-like today the key word is ( Choices ) most consumers were informed on how they would make a big purchase, many today believe the ( BS ) the salesperson hands out ! ( Choices ) . Have a nice day ! 🍩☕️👀😎👍
This is crap.They’re standard V8’s,nothing quirky about them.Why do you keep showing 4 bbl’s when you’re talking about 2 bbl’s?.
Thank you for your feedback! It’s always great to hear different perspectives from passionate car enthusiasts like you. To clarify, GM’s 445 V8s were unique in several ways, especially for their era. While they might not seem “quirky” by today’s standards, their versatility, durability, and ability to handle both 2-barrel and 4-barrel carburetors gave them a wide appeal. The 2-bbl setup focused on efficiency, while the 4-bbl offered more power for those who wanted to push the limits. Showing 4-bbls while discussing 2-bbls might have caused some confusion, but it highlights how these engines catered to a variety of builds and applications, from family sedans to muscle cars.
We love diving into these details, and our community thrives on conversations like this. Keep the comments coming, and let’s uncover more together! Don’t forget to comment, share, and subscribe to American Muscle Cars. Hope to see you in the next videos.
Have a good day....
455 Rocket the song by Kathy Mattea
well, heh. Not the 455 but the....400? Friend had a 67 Catalina and it really performed, had the 2 barrel Rochester. My fam bought at 68 Bonneville with the 4 barrel Quadrajet, with the small primaries and big secondaries, and one pump. Well it sucked for the entire 6 years we owned it. That carb was a total POS. 50 years later I still have scar tissue over that. What a piece of crap.
There was something obviously wrong with that Q Jet. While they are finicky, when operating properly they are quite reliable and were the best 4bbl on the market for power and economy in their day. While probably not the case in your experience, Q Jets got a bad reputation because each one was specifically tuned for its original application. People would go to a junkyard and looking for a carb for their 69 GTO with a 400. They’d take on off a 74 Le Mans with a 400, rebuild it and wonder why their GTO now ran like crap. They can be modified for use on anything but they are very complicated. It’s not as simple as replacing jets in a Holley.
who ever came up with tis is full of crap, any body taht knows Carberators will tell you that a 4 barrel will get better a milage and be more responsive until you stand on the gas. you may be able to fil this BS to someone that cut their teeth on Fuel injection, but all carb guys know the Smaller venturis in a 4 barrel will have better response than a two barrel.
"Anybody" who paid attention in elementary school can write a sentence using correct grammar and punctuation. So I wouldn't consider you to be the expert on much else.
@@Atomwaffen-y3s buck you ..
@@Atomwaffen-y3sGrammer....that is Your complaint ?...😮
@Atomwaffen-y3s Regardless of your unsolicited opinions on literacy, he is 100% correct.
Don't be an ass. Especially when you don't understand the subject...
Exactly
Wow