High rpm 427 bbc build 940hp? - Page 2

sean1970ss · 06-26-2019, 06:33 PM

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

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

Quote:

Originally Posted by sean1970ss

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

Quote:

Originally Posted by joespanova

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

Quote:

Originally Posted by sean1970ss

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

Quote:

Originally Posted by joespanova

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

Quote:

Originally Posted by sean1970ss

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

06-26-2019, 06:33 PM	#11
sean1970ss Junior Member Join Date: Aug 2015 Posts: 67 Likes: 16 Liked 10 Times in 6 Posts	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.

06-26-2019, 08:15 PM	#12
RonP Junior Member Join Date: Mar 2003 Location: Detroit,MI Posts: 79 Likes: 27 Liked 27 Times in 13 Posts	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