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-   -   High rpm 427 bbc build 940hp? (https://classracer.com/classforum/showthread.php?t=73263)

sean1970ss 06-07-2019 10:25 AM

High rpm 427 bbc build 940hp?
 
I was talking with a guy he said they dynoed a 427 bbc here while back made 940hp at 9200rpm. .100 over, 14.1 compression .903 lifter, 55mm cam light pistons, and rods tunnel ram. AFR 315 heads 2.300 valve.



Is that possible??? Never seen one make that much power.

Jim Hanig 06-11-2019 09:12 AM

Re: High rpm 427 bbc build 940hp?
 
Quote:

Originally Posted by sean1970ss (Post 590175)
I was talking with a guy he said they dynoed a 427 bbc here while back made 940hp at 9200rpm. .100 over, 14.1 compression .903 lifter, 55mm cam light pistons, and rods tunnel ram. AFR 315 heads 2.300 valve.



Is that possible??? Never seen one make that much power.

Sure it is.

Tom Goldman 06-11-2019 12:20 PM

Re: High rpm 427 bbc build 940hp?
 
Built like an old school A/ Modified Production engine.
Some small inch Big Blocks with 348 cranks made near that turning well over 10K RPM's

Hacksaw 06-11-2019 02:06 PM

Re: High rpm 427 bbc build 940hp?
 
Wonder what a J. Armstrong Super Stock engine with a tunnel ram bolted to it would make?

Dana Fitzpatrick 06-11-2019 06:29 PM

Re: High rpm 427 bbc build 940hp?
 
Quote:

Originally Posted by Hacksaw (Post 590430)
Wonder what a J. Armstrong Super Stock engine with a tunnel ram bolted to it would make?

I've wondered that myself.One step further,set up some match races against the SS/AH cars.And throw in some SS/A Fords.I'd pay to watch.

Dick Butler 06-11-2019 06:58 PM

Re: High rpm 427 bbc build 940hp?
 
Chrysler would pass a rule...

killintime6968 06-11-2019 07:08 PM

Re: High rpm 427 bbc build 940hp?
 
Old School Pro Stock.

1matcoman 06-11-2019 07:56 PM

Re: High rpm 427 bbc build 940hp?
 
Quote:

Originally Posted by Dick Butler (Post 590448)
Chrysler would pass a rule...

Now that's funny, right there.....

HP HUNTER 06-11-2019 08:31 PM

Re: High rpm 427 bbc build 940hp?
 
Quote:

Originally Posted by Hacksaw (Post 590430)
Wonder what a J. Armstrong Super Stock engine with a tunnel ram bolted to it would make?

Thats a very good question!

Jim Hawkins 06-21-2019 11:11 PM

Re: High rpm 427 bbc build 940hp?
 
Back about 1985 had a 420" big block in a 69 nova for SS/BM. Had a crower crank made at 3.60 stroke, alum. rods, alum. bow tie heads, titanium valves, cast tunnel ram and 2 dominators. That motor saw 8500rpm and ran a best of 9.59 at pomona. Really should have run quicker and made more power than it did but we did manage to win the mile high's with it in 1989.

The motor is still in the car owners garage just as we ran it back then. Dominators and all, and he would like to sell it.

sean1970ss 06-26-2019 06:33 PM

Re: High rpm 427 bbc build 940hp?
 
When I ran a short stroke I shifted 9400-9600 but never knew how much power 440" motor made. Did not have the $$ to dyno. Biggest problem was the valve train. Was fortunate to have a few really sharp guys help me out.

RonP 06-26-2019 08:15 PM

Re: High rpm 427 bbc build 940hp?
 
We had a customer that purchased the 402ci D/SM (at the time) from JEG in the mid 1990's. That engine dyno'd at +900hp. I was working at Kromerkraft at the time and we built a set of headers for that engine and gained 5hp. I remember somewhere around 940 or 950 back then.
Thanks, Ron

joespanova 07-09-2019 11:17 AM

Re: High rpm 427 bbc build 940hp?
 
Quote:

Originally Posted by sean1970ss (Post 590175)
I was talking with a guy he said they dynoed a 427 bbc here while back made 940hp at 9200rpm. .100 over, 14.1 compression .903 lifter, 55mm cam light pistons, and rods tunnel ram. AFR 315 heads 2.300 valve.



Is that possible??? Never seen one make that much power.


I'd like to look at those heads , because its highly unlikely , no , make that definitely NOT anything close to what AFR produced...so this suggestion is somewhat "misleading". The only thing AFR 315 about those heads is the casting. Contemporary t-ram / carbs , vac pump and all the other bells and whistles .....

sean1970ss 07-10-2019 03:22 PM

Re: High rpm 427 bbc build 940hp?
 
Quote:

Originally Posted by joespanova (Post 592083)
I'd like to look at those heads , because its highly unlikely , no , make that definitely NOT anything close to what AFR produced...so this suggestion is somewhat "misleading". The only thing AFR 315 about those heads is the casting. Contemporary t-ram / carbs , vac pump and all the other bells and whistles .....


Tony Mamo did the heads. Never witnessed it or had anything to do with it.

joespanova 07-11-2019 01:14 PM

Re: High rpm 427 bbc build 940hp?
 
Quote:

Originally Posted by sean1970ss (Post 592171)
Tony Mamo did the heads. Never witnessed it or had anything to do with it.

One phone call followed up with another , confirmed all I need to know about that j@ck@***.

sean1970ss 07-17-2019 07:32 PM

Re: High rpm 427 bbc build 940hp?
 
Quote:

Originally Posted by joespanova (Post 592223)
One phone call followed up with another , confirmed all I need to know about that j@ck@***.


Not quite sure what your problem is with me or Mamo but it was just a simple discussion. Weather it happened or did not does not matter. Some say yes it is doable but not meant to be a debate.

joespanova 07-25-2019 08:47 AM

Re: High rpm 427 bbc build 940hp?
 
Quote:

Originally Posted by sean1970ss (Post 592693)
Not quite sure what your problem is with me or Mamo but it was just a simple discussion. Weather it happened or did not does not matter. Some say yes it is doable but not meant to be a debate.

Now , you tell me , where exactly your "take away" from anything I said suggests I had a problem with you......
Mamo , on the other hand , is still a Jack@@s


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