Switzer Racing Koffel's B1 Head Chrysler Big Block Engine Dyno - 9800+ RPM
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- Опубликовано: 18 ноя 2022
- Huge thanks to Scott Koffel for getting this put together for us. What an absolute unit.
NHRA Super Stock & Comp. Eliminator Class-Legal engine build.
409 Cubic Inch Big Block Chrysler
400 "Motorhome" Block
Wiseco Pistons
BME Rods
Koffel's Place B1 Inline-Valve Heads
Port Design by Ron @ Fox Lake Racing
Port Mapping and CNC work by Slawco
Camshaft by Comp Cams
CFE Tunnel Ram Intake
Holley 1050's - Reworked by CFM (Dale Cubic)
Tested with 20w50 oil (!) and no crankcase vacuum
Last pull was nearly 10K RPM
Koffel's Place Inc-B1 Sales
419.433.4110
![Gunna - one of wun [Official Video]](http://i.ytimg.com/vi/w_JtBYqMgk8/mqdefault.jpg)
A little Wayne county speedshop Darrel alderman/Scott geffrion action here!
They pulled my motor on the same dyno, it made 989hp. Rich Dave Scott built me a street motor with less compression less camshaft less cubic inch less money and made 80 more horsepower. 557 hemi sheet metal intake pair of 1050s. These guys are the top of the heap purely great people. Remember the Darrell Alderman day's 💪💪💪💪👍
Yes they are!
That beefy Mopar 400 is just on the brink of exploding so many rpm's never seen before crazy!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! thanks
would have fell apart if factory almost 50yr old brand X block
Man that is an impressive build. That short stroke Devil 👿 ! Well done sir.
Koffel's Place, man I thought they were gone! Good to see you guys are still around👍🏼
Well we prepped 13 blocks all the same. If we have an issue we can swap everything over to the next block and leave the old one at the track. Someone may need it for a stool or to prop up their car with. We truly don’t expect to need more than 3 per race. We got more power to tweak once we put it in the car. Can’t be too careful.
even with filler and girdle plate?
Let me know if those heads get in the way. I’ll sit down it that stool, and make sure they don’t fall of in ya!
Definitely one of the best sounding engines on the dyno I've heard.
Nobody in the past put faith in that 400 block.
Grand Spaulding Dodge did ……1971 dodge challenger RT ..
They ripped the 340 out and stuck in the 400 with 6 pack ..
They could stand 4th and bury n50s down the block
I can only imagine the thrill of dropping the clutch in this thing!!!!
Oh my!!! What an awesome engine!!! How much does something like this go for seriously?? I've been looking to replace my small block in my 79 Volare duster drag car with a big block that can rev to high rpm like this, I rev my small block to 8500rpm before I shift it but this thing seriously winds up!! Awesome stuff!!
It's great to see a Mopar engine perform like this. My question is, when will the technology bleed down to a set of affordable heads that could be ordered off Jeg's, Summit, etc. There have been heads available for Chevy and Ford that produce good hp for years. Those of us dedicated to Mopar are left with no choice but to pay if we want to play. I have an altered that I refuse to put a Chevy in but can't afford the Mopar motor I want to put in it!
Look into the TrickFlow Power Port 270s, I know someone running a set on a Pump gas 493 that right at 800 on the Dyno.👍
@@douglascooper1987 But the same motor in a big block chev would make closer to 1000hp.
Igor likes. Koffels is world wide knowing for best engines. Even in old country you mention the name. It’s top performance from pro stock❤.
Amazing. Happy for koffel family, they are great people!
Wow! A big block turning those RPM's
Bear in mind a stock stroke Mopar B is a shorter stroke than a Chev 350 SB
I have a 65 383 that loves to rev :) It's balanced with electronic ign. MOPAR Per intake, Edelbroc carb. 440 purple shaft cam and larger valves.
@@fourfortyroadrunner6701 with a way stronger Block and Rods, more Deck height, longer Rods and better rod ratio. I said it before and say it again, the Mopar Low Deck is Chryslers Prime engine
There is No better vintage engine suited for high RPM than the Mopar Low Deck BB
400 Best production engines! love them over a Hemi
Many yeas ago I think there was some guys who ran a b1 Mopar around the Denton area . Nice to see a B 1 motor make power. Thanks for the video
Very impressive.
Good job on the build.
Nice numbers.
Thanks for sharing.
Take care, Ed.
@edsmachine93 fancy seeing you here! 😅This truly is one hell of a build and one which is often overlooked nowadays. 383 today makes people think of a stroked small block Chevy. Many not knowing anything about one of the most versatile motors to grace the racetrack or street performance.
That's absolutely amazing
Insane, i took my 470 to 7100 rpm on the dyno just to see how far the power fell off from peak power at 5800. My next build will be b1 headed for sure.
Oh God 400 inches and 1,000HP!
Very impressive 👏
That thing is no joke!
Now that's cool.
Wow!
Wow that's awesome!
Wow amazing ! That is a killer engine, would love to see a video of it in a car , racing.
Wow!!!!! 9500rpm is crazy!!!!
Geezus
Hi Neil.
Man I dig this engine, I’ve probably watched it 10 times since you posted it. I like seeing a B1 head ran at these smaller cubic inches. I see the steel T&D rockers… what does the rest of the valve train look like? Do you disclose the cam specs, core size, lift, & duration…? Also what about the oil system? Have you looked at the bearings after running it at this rpm?
Thanks for sharing.
Kevin Griffitts
That's funny I'm a Coffel but I guess back in the day I had family that were steer wrestlers so they changed it from a K to c cool to see a car motor go them big RPMs
Impressive. Would love to see specs
WOW unreal / sounds like a prostock motor
Just imagine if we had another 91 cubes to play with and a dry sump. 1250HP? Would qualify in pro stock in the 90s.
What class/classes will this engine go in?
I filled my block to the bottom of the freeze plugs and used 4 bolt mains from pro gram specialist in Ohio ran 15:15 to1 alum rods and it lived unto i sold it 10+years dyno at Koffles 928 HP 800 Torque one 1050 carb
My goodness
I used slightly different terminology
Love it , great build. What CR are you running ? It's hard to get a piston for a 400 block unless it is stroked. I'm rebuilding my 400 into a 500 and want to make 1400 hp with Predator heads. This sounds incredible !
I would strongly consider an aftermarket block if you're throwing that much stroke at it. Part of what lets this work and live is the 3.4 stroke. If you dont already have the predator heads, consider the B1 heads if you're going to be in the 500" range.
Over 14:1
@@NitroNeil Thanks for the info !
>Mike
Goddamn I had my headphones on it sounds crazy I was cringing lol!
Damn boys....that thing is stout!! 😅
That’s an incredible engine you built. I knew that 383’s and 400’s could rev like crazy. I wanted to build one with Hemi length rods. That gives you a 2-1 rod ratio. What did you use?
Bet big money aluminum rods.
Pretty neat stuff.... that poor 400 Block though, curious to see how long it lives ?
Why would you think the block would be the limiting factor those RPMs the valve train is going to be the limiting factor.
Thanks so much for sharing, what class do you plan to run with the Dart? I'll be a fan!
Super Stock AM (modified) or one of the Comp classes depending on final weight.
WOW. On 2 bolt mains no less. I wonder what was done for bottom end stability, oiling, valve train to handle that kind of engine speed. Holy moly.
For what its worth, chrysler cranks are buried in the block, unlike chevy and ford.......
Light weight and perfect balanced rotating assembly
@@jamessiddle572but Chevy has a butt load more main webbing compared to Chrysler, Im an engine machinist and get jealous of those main webs lol
Main Girdle.👍
Be fun in a street car... Oh yes
What transmission you use to handle +9800 rbm?
Liberty
Good luck and i will add you in instagram to see the update
Outstanding N/A power numbers. But i can understand why guys are choosing power adders. Same numbers can be produced with less RPM and longevity.
Not many classes in NHRA to run power adders like that, but yes, simple combo would make same power for much less expense.
Cant see any numbers or voice on my vid. Cu in ? RPM. TQ. HP. Fuel curve. But sounds very strong.
Try loading it again, but its a 409 making 1004. Its over 990 from 7900rpm to 9400rpm.
@@NitroNeil thanks. Im in tailand at this time. Wifi and my phone is not #1.
Thailand. I meant.
what kind of valve train was used to run at these rpm?
Looks like Jessel rocker assembly
T and D
Good Lord.....9700 rpms...😬😳🤤...kinda made me pucker a little towards the end...😅
Holy Smokes !!! What is that engine going into ???
68 Dart!
Dam Old Dodge
A passenger car block???
Even with a short arm and a razor sharp tune, how many laps can it possibly last with a production 2 bolt block, even if you incorporated all the usual bandaids???
@@bigboreracing356 Hope it works out for em'.
yeah I dont get it either
It appears @Big Bore Racing took a hike and took his ignorant posts with him. Typical simpleton.
Well top fuelers made 1500 or so in the late 60s with way less good stuff and nitro.... I bet it's good for 35-50 passes assuming no detonation then it'll spit the crank out of the main webs after the fastest pass lol
@@LowDollarDude Cross bolted mains and far thicker webs on those HEMI blocks, though.
Stock stroke 400?
?
As in is it a stoke stroke 400 non stroker
Alot more load when the engine is in a car compared to a dyno
That's FKN singing
Mopar bb= boost l boat anchor
Amazing Stuff‼️ The Lowdeck( use to Free if you want it) 400 Really is Something 👍👍