this is my buddies motor he had a 400m in his bronco and then broke the crank one day and found another 400m to build because he had a lot of performance parts for it and had some rare big valve heads. now it has a mild cam, roller rockers, and pistons that upped the comp ratio to about 10:1. he has a 650 edelbrock on there and doest plan to go bigger because even at 4800 i think the motor was only pulling like 550cfm. it also has a converted HEI distributor. i did help him through the build and parts were very hard to get, and expensive. the torqu curve was over 420lbs from 2800 to 4800, the dyno could go lower but they didnt want to stress the motor too much.

hey, nice job!,i was just wondering how u pulled those numbers? thats a pretty unpopular engine to build, why did you choose that one? just curious.