This is my combo. 396 .060 over, closed chamber heads with stock valves, 1.72 comp cams roller tip rockers, Isky 292 duration 590 lift cam, torker 2 intake with 800 cfm holley carb, hooker competition headers, HEI distributor. In my 69 chevelle with full interior and a 4.56 rear the car ran 12.10 @ 114 mph. I was wondering if anyone could estimate the hp of this engine. I am installing it In my 66 elky with a M22 and 3.73 rear end (chevelle had TH400 and 3,500 stall) does any one see problems with this combo? any suggestions would be appreciated.

Just for fun I plugged your MPH and a guestimate of 3700 lbs for your car into a Virtual Engine Calculator and it came up with 514HP.

The M-22 and 3.73s might be a problem. A 396 is not a 454 when it comes to torque and the 2.20 low gear is not the best thing unless you have some very steep gears.

Thanks fopr the info. what suggestions for gears this car will be a sometimes driver I hve the 4.56 gears so I could put those in perhaps ill just do that I dont intend on doing much hiway driving I really want to keep it a 4spd I also have an M20 would that be a better choice?