High rpm 427 bbc build 940hp?

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

06-26-2019, 06:33 PM	#1
sean1970ss Junior Member Join Date: Aug 2015 Posts: 67 Likes: 17 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	#2
RonP Junior Member Join Date: Mar 2003 Location: Detroit,MI Posts: 81 Likes: 28 Liked 29 Times in 14 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