i m wondering if anyone can give me an idea on what kinda horsepower i can expect from this motor im building it is a 460 block bored 30 over with hyperutectic pistons i am putting a 429 crank and heads on it the motor has been balanced and will be equiped with headers dual 3 inch exhaust eldabrock performer intake and a 750 eldabrock carb the cam is a comp cam it is 265/275 dur. 484/510 lift i m putting a accel hei ignition system on it i would also like to know if it will run alright on pump gas. and thanks for any info you all can give me. ohh almsot forgot its going in my 77 highboy

 

To get the most accurate results, it would help to know a few things, if possible.

1) What's the compression ratio (static), or, what pistons are you using?
2) Which particular heads do you have (casting #s), and, do you know the chamber size?
3) What's the part # of the Comp Cams grind (sounds like a Dual Energy hydraulic, but it helps to be sure)
4) What size headers?

Let me know- Mike

 

Mike, I've built a half a dozen 429-460 combos, vary simular to yours. I've ran a 1968 429 for probably 10 years on pump gas, the heads were even milled .040". Never had a problem with pump gas. I couldn't tell you horsepower but one of my trucks 77 f250 highboy 35" tires 4.10 gears 4-speed will beat the new gm 5.3 liter V-8's rated @ 300 Hp. Let me know if you need any ideas for power.