I'm running these my 454(461). But use the Howard's Big Mama Rattler cam. 553-545 lift cam. Rpm air gap. Absolutely nothing wrong with peanuts. Designed for drivability and response. I'll take that extra 50lbs of Torque any day over an extra 20hp peak.
I'm looking forward to seeing what the 290's can do. I'm doing up a set now going on a "spare parts" 454 for a Henry J gasser. I'm putting in 2.19 intakes, but I haven't yet decided if 1.88 exhaust is a good idea or not with how shrouded those closed chambers are.
I’ve got a 454HO forged rotating assembly in a standard L29 gen 6 block. Same small dome pistons but I’ve got the milder 454HO cam, not the zz502. I’ve been going back and forth on heads. These videos really help real world guys like me put something together without taking out a 2nd mortgage on the house! I keep running into really low compression ratios when looking at the GM heads. The large combustion chambers on the 781s and 236s have put my CR in the low 8s… Is it even possible to make 450hp with a factory head on my 454HO bottom end without spending $3k on AFRs? Super excited to see how the bone stock 781s do!
In my opinion the quickest way to touch 500 horsepower on that motor is get some 781, Mill. down.030 to 113 combustion chamber, air gap intake and Scorpion 1.8 rockers I would estimate that would get you right below 500 , and good condition 781 for 300 bucks is not hard to find
If you used the RPM air gap on the peanut ports then there was quite a bit of mismatch in ports, correct? I don’t know of any matching port aftermarket manifolds. It is nice the torques at 4000 is very equal across the board. Peanuts are probably better below 4k.
@@dzperformance7360 there is a channel here on RUclips that might interest you. The name is "operatingengineer" and he has built and raced RV 454's with peanut ports heads and a Summit flat tappet cam in a '69 Camaro with very nice results. He ports the heads himself and bell mouths the intake port openings to match a oval port gasket. Very impressive for heads a lot of guys toss in the scrap pile.
True but the head runner is sucking in the heads direction and can't tell any difference anyway. The opening of the intake ports does not know that the intake manifold ports are larger. Just bevel the intake ports on the heads some so it's not just a flat squared opening. Somebody could do a dyno test to see but I doubt it's worth it to make any difference. Also, another thing that goes against conventional thinking is, the smaller peanut ports have stronger velocity and use up more of the cam RPM range efficiently for a cam up to around 230+ degrees @50. Probably using 90% of camshaft, whereas larger or too big ports would use maybe 70% of that same cam on the upper range. Big huge ports might LOOK impressive but even the large factory chevy BB heads were over kill for anything under 800HP. So unless your strictly drag race only.....?
You Know whats sad, I gave away some real nice Peanut port heads, 3 set 427/396/454 , My Chevelle runs 69 435 hp 427 closed chamber, I ported the snot out of them, With my Blower, They do real well 660hp 690 ft pd running 15 under, problem I got sick 9 years ago car just sits there, Old ago stinks
Love your channel I'm a big block guy and lòvè all your videos I also have a 406 short block I am going to start fresh in up and put some 6 inch rods in ìt I also have a 4 bolt main 400 with a good set of eagle h beam rods they are 5.850 with vanolle 14 to 1 forged pistons the block is 0.60 over which is scary I bought it from a woman who's husband passed away she didn't know what happen to the crank so I don't know if it had a 3.75 or a 3.875 or a 4.00 who know it was in a pulling truck. But for $200 I really couldn't go wrong the pistons were about 1k I just bought ìt to help her with money.
Thx for posting Nick. Just wealth of info on combination's! I will say if there is one set of heads that would benefit from a tight LSA, those peanut ports are a for sure lol! Like maybe a 106 LSA... But dont hear me wrong, not bagging on your cam. I'm about to put a 454 Ho cam in a 396 just because we wanted to rollerize it and i had it laying on the shelf. Wouldn't be my first choice, but should be a nice upgrade in a 325hp 396 in an impala..Thanks Nick
106 LSA on the small cam will detonate this engine in a heavy car in the summer heat and when you get a bad batch of fuel. Get your head out of Vizards arse.
Velocity builds torque for the win. With some intake runner work you can extend the useable RPM range of PP heads to around 5500. The 502/502 cam is about as big as the PP's can support. But, what potent combo in a heavy street car!
Awesome video! This is what I always wanted to know! I have a mild 454 in my Camaro with 236 heads , it goes mid 11s and wondered what the HP difference 781 heads what make
@@rickbaker9053 bowl ported by me in my garage intake ports opened and cleaned up but exhaust ports untouched , I put new single with damper springs and moly retainers, I did zero machine work they still have 2.06 valves and the same valve job it left Tonawanda with and in the RV! 😂 I have since put 2.19 intakes, had a valve job done, did a little porting to the exhaust ports but have yet to put them back on and try them since the work was done
@@operatingengineer Nice! What compression ratio are you roughly.. What rpm are you able to build power too. I started on a set myself and I'm thinking of just 2.19 for the intakes and leaving the exhaust alone other then some clean up. I take your probably running a fairly mild cam.
@@rickbaker9053 but to answer your questions 236 heads are almost 120+ cc chambers I have not milled mine but I really should, I ran steel shim gaskets to raise compression and have flat tops so I’m guessing 8.5 compression, the cam is a summit 1302 .540 lift 228 238 @50 as far as RPMs with a single spring with damper and 120# on the seat it will easily rev to 6000 that’s what I used to shift at then I went down to 5500 and it went just as fast , I actually put my heads on a flow bench and that day I brought a 2.06 valve 781 that also still had 2.06 valves as this video says my home ported 2.06 valve out flowed the 781 up to .500 lift then the 781 walked away! So with a small cam like mine and low RPMs peanut ports are an awesome street car head! I’m not new to big block street cars and drag racing I have had many rectangular port and oval port street cars and these peanut ports are the first I ever tried and the low end torque and throttle response is great ! (I also flowed a bone stock 236 head to see if my porting helped as many people said it probably hurt more than helped ! They were wrong! ) the intake ports are so tiny any porting right or wrong helps!
I'm running 088 rectangular port heads on my low compression street 496 big block with a dart single plane on my 4,260 pound 1968 impala with 3.36 rear gears and I have plenty of tire smoking torque 😆 peanut port heads are most definitely low end torque heads.
2.25/1.88 valves in my 049 heads would pull to 6800 rpm on my 11 to 1 compression pump gas 468. I could embarrass 650cc crotch rockets roll racing. Valve float due to the hyd roller cam kept it under 7000 rpm.
Hey nick the gm factory 496 do they come with good parts ĺike the rods and forged crank ? I see the now and the on fb market place and was wondering if a freshend up sort block would be a good foundation to start with.
Really enjoying the videos. I just don’t seem able to find any used motors for a decent price around my neck of the woods even on Marketplace. Any suggestions?
@@dzperformance7360 I’d like to tinker with a big block Chevy. I’ve built a half dozen small blocks and love them, but I want to try something a little different. Any suggestions would be appreciated!
@@dzperformance7360 Hi Nick, thanks for the reply. I’ll expand my search and see how it goes. I’m about 30 miles from ATL, and had the range set at 60 miles. Looking to try a big block for something different. Enjoy the content a lot!
I would love to see a test with the newer vortec style heads, casting "279" , 100cc chamber oval port
I always look forward to your builds..Thanks for sharing your knowledge Nick much appreciated..
This channel is does the best job of doing builds that answer the questions real backyard hot rodders ask. Thank you!
Kind comments like this keep me going thank you so much
Thanks for the input I love hearing about the project you guys are doing out there, keep us informed how it's going
Peanut ports are definitely for me at the drag strip.........................
You're good
Correction unless your name's Mark these are tow truck heads
I agree, the peanut ports fitted with larger valves can really rock.
The test that I run tells me it's not in the valve area it's the ports that hold these heads back from horsepower
I'm running these my 454(461). But use the Howard's Big Mama Rattler cam. 553-545 lift cam. Rpm air gap. Absolutely nothing wrong with peanuts. Designed for drivability and response. I'll take that extra 50lbs of Torque any day over an extra 20hp peak.
Especially in a heavy car/truck!
I'm looking forward to seeing what the 290's can do. I'm doing up a set now going on a "spare parts" 454 for a Henry J gasser. I'm putting in 2.19 intakes, but I haven't yet decided if 1.88 exhaust is a good idea or not with how shrouded those closed chambers are.
Most machinist when they cut the bigger valves do a little de,shrouding, with a cuter. You lose a couple cc's but they run great that way.
Thank you for your knowledge and videos USA 🇺🇸 TRUMP 2024
A factory low rise q jet manifold would have worked great on that peanut port 454.
I’ve got a 454HO forged rotating assembly in a standard L29 gen 6 block. Same small dome pistons but I’ve got the milder 454HO cam, not the zz502. I’ve been going back and forth on heads. These videos really help real world guys like me put something together without taking out a 2nd mortgage on the house! I keep running into really low compression ratios when looking at the GM heads. The large combustion chambers on the 781s and 236s have put my CR in the low 8s… Is it even possible to make 450hp with a factory head on my 454HO bottom end without spending $3k on AFRs? Super excited to see how the bone stock 781s do!
In my opinion the quickest way to touch 500 horsepower on that motor is get some 781, Mill. down.030 to 113 combustion chamber, air gap intake and Scorpion 1.8 rockers I would estimate that would get you right below 500 , and good condition 781 for 300 bucks is not hard to find
@@dzperformance7360 Hey thanks for taking the time! Love your channel!
thanks Nick good info really like the reveiws of whats next
If you used the RPM air gap on the peanut ports then there was quite a bit of mismatch in ports, correct? I don’t know of any matching port aftermarket manifolds. It is nice the torques at 4000 is very equal across the board. Peanuts are probably better below 4k.
The original Edelbrock Performer dual plane is what you want for the PP heads. Smaller runners that more closely match the PP's.
You cannot gasket match the peanut ports to a oval port what you can do is bevel and round the port to nearly match the gasket of a oval Port gasket
It is correct that the performer has peanut Port size runners
@@dzperformance7360 there is a channel here on RUclips that might interest you. The name is "operatingengineer" and he has built and raced RV 454's with peanut ports heads and a Summit flat tappet cam in a '69 Camaro with very nice results. He ports the heads himself and bell mouths the intake port openings to match a oval port gasket. Very impressive for heads a lot of guys toss in the scrap pile.
True but the head runner is sucking in the heads direction and can't tell any difference anyway. The opening of the intake ports does not know that the intake manifold ports are larger. Just bevel the intake ports on the heads some so it's not just a flat squared opening. Somebody could do a dyno test to see but I doubt it's worth it to make any difference. Also, another thing that goes against conventional thinking is, the smaller peanut ports have stronger velocity and use up more of the cam RPM range efficiently for a cam up to around 230+ degrees @50. Probably using 90% of camshaft, whereas larger or too big ports would use maybe 70% of that same cam on the upper range. Big huge ports might LOOK impressive but even the large factory chevy BB heads were over kill for anything under 800HP. So unless your strictly drag race only.....?
You Know whats sad, I gave away some real nice Peanut port heads, 3 set 427/396/454 , My Chevelle runs 69 435 hp 427 closed chamber, I ported the snot out of them, With my Blower, They do real well 660hp 690 ft pd running 15 under, problem I got sick 9 years ago car just sits there, Old ago stinks
Love your channel I'm a big block guy and lòvè all your videos I also have a 406 short block I am going to start fresh in up and put some 6 inch rods in ìt I also have a 4 bolt main 400 with a good set of eagle h beam rods they are 5.850 with vanolle 14 to 1 forged pistons the block is 0.60 over which is scary I bought it from a woman who's husband passed away she didn't know what happen to the crank so I don't know if it had a 3.75 or a 3.875 or a 4.00 who know it was in a pulling truck. But for $200 I really couldn't go wrong the pistons were about 1k I just bought ìt to help her with money.
Sounds like a cool project keeping us posted on what happens
Thx for posting Nick. Just wealth of info on combination's! I will say if there is one set of heads that would benefit from a tight LSA, those peanut ports are a for sure lol! Like maybe a 106 LSA... But dont hear me wrong, not bagging on your cam. I'm about to put a 454 Ho cam in a 396 just because we wanted to rollerize it and i had it laying on the shelf. Wouldn't be my first choice, but should be a nice upgrade in a 325hp 396 in an impala..Thanks Nick
106 LSA on the small cam will detonate this engine in a heavy car in the summer heat and when you get a bad batch of fuel.
Get your head out of Vizards arse.
Peanut port super stock, 8.8 to one,640 hp, 620 torque, not bad for junk
With peanut ports?
Yep, ran 9.60 in a 3300 lb car, look it up in NHRA blueprint specs, I think it's run quicker than that, I flowed a set of those, it makes sense!!
@@billlittle4285How was the motor built...did you ever see Mark at vortech pro peanut port test
@@billlittle4285 I Tried looking it up under that site. Where do I find it under that site?
@@rickbaker9053the 454 they are talking about costs more than 4 of marks motors ! Totally different category
Velocity builds torque for the win. With some intake runner work you can extend the useable RPM range of PP heads to around 5500. The 502/502 cam is about as big as the PP's can support. But, what potent combo in a heavy street car!
A well-built 468 with 9.5 to 1 compression with this top end on it, would pulled the house down with a highway gear in it
Awesome video! This is what I always wanted to know! I have a mild 454 in my Camaro with 236 heads , it goes mid 11s and wondered what the HP difference 781 heads what make
That's pretty darn good. Anything done to the heads? What's your build like.
@@rickbaker9053 bowl ported by me in my garage intake ports opened and cleaned up but exhaust ports untouched , I put new single with damper springs and moly retainers, I did zero machine work they still have 2.06 valves and the same valve job it left Tonawanda with and in the RV! 😂
I have since put 2.19 intakes, had a valve job done, did a little porting to the exhaust ports but have yet to put them back on and try them since the work was done
@@operatingengineer Nice! What compression ratio are you roughly.. What rpm are you able to build power too. I started on a set myself and I'm thinking of just 2.19 for the intakes and leaving the exhaust alone other then some clean up. I take your probably running a fairly mild cam.
@@rickbaker9053 that link is a post I made with a lot of info on a Facebook big block group
@@rickbaker9053 but to answer your questions 236 heads are almost 120+ cc chambers I have not milled mine but I really should, I ran steel shim gaskets to raise compression and have flat tops so I’m guessing 8.5 compression, the cam is a summit 1302 .540 lift 228 238 @50 as far as RPMs with a single spring with damper and 120# on the seat it will easily rev to 6000 that’s what I used to shift at then I went down to 5500 and it went just as fast , I actually put my heads on a flow bench and that day I brought a 2.06 valve 781 that also still had 2.06 valves as this video says my home ported 2.06 valve out flowed the 781 up to .500 lift then the 781 walked away! So with a small cam like mine and low RPMs peanut ports are an awesome street car head! I’m not new to big block street cars and drag racing I have had many rectangular port and oval port street cars and these peanut ports are the first I ever tried and the low end torque and throttle response is great ! (I also flowed a bone stock 236 head to see if my porting helped as many people said it probably hurt more than helped ! They were wrong! ) the intake ports are so tiny any porting right or wrong helps!
Awesome builds. Love this channel. 😎😎😎😎⚡⚡⚡⚡🤘🤘🤘🤘🔥🔥🔥🔥
What would these heads do on a 11.5 to 1 compression 427
??
I know where you're going and you're probably right,, smaller the cubic inch probably the better they would work
@@dzperformance7360 It would be interesting to try that combo with a solid roller in a 2900 pound race weight car.
I'm running 088 rectangular port heads on my low compression street 496 big block with a dart single plane on my 4,260 pound 1968 impala with 3.36 rear gears and I have plenty of tire smoking torque 😆 peanut port heads are most definitely low end torque heads.
Thanks for posting this I was always curious what the peanuts will do compared to big ovals. I’d love to see a 2.19 1.88 pocket ported 781s
The bigger valves is usually worth at least 15 horsepower so you can just take an extra 15 or 20 on top of the 781 with Factory valves in this video
Just my opinion but I can show you examples that it usually helps quite a bit like that
2.25/1.88 valves in my 049 heads would pull to 6800 rpm on my 11 to 1 compression pump gas 468.
I could embarrass 650cc crotch rockets roll racing.
Valve float due to the hyd roller cam kept it under 7000 rpm.
Hey nick the gm factory 496 do they come with good parts ĺike the rods and forged crank ? I see the now and the on fb market place and was wondering if a freshend up sort block would be a good foundation to start with.
I can't really speak on that topic. My experience with big block Chevys are 1967 through 2000 , and crate motors
I just don't have any experience with that generation of motor
Really enjoying the videos. I just don’t seem able to find any used motors for a decent price around my neck of the woods even on Marketplace. Any suggestions?
What are you looking for?
My suggestion is be willing to drive, I will go two or three hours drive time to go get just one motor
@@dzperformance7360 I’d like to tinker with a big block Chevy. I’ve built a half dozen small blocks and love them, but I want to try something a little different. Any suggestions would be appreciated!
@@dzperformance7360 Hi Nick, thanks for the reply. I’ll expand my search and see how it goes. I’m about 30 miles from ATL, and had the range set at 60 miles. Looking to try a big block for something different. Enjoy the content a lot!