i have a 71 460 bored .020 over. stock dove-c heads. kept the 10.5-1 compression. the cam is a EPWI MC1732. the specs are, adv dur:260 int. 270 exh. .050 dur:204 int. 214 exh. valve lift:.479 int. .504 exh. i have a wieand stealth with a edelbrock 750. L&L 3/4 length headers with inch and three quarter tubes. i've also got a C-6 and 205 t-case. anything else you need?
I couldn't find valve open/close specs on your cam but it looks like EPWI probably uses Comp Cams pieces with their name on them, so I subbed in the Comp Cams X256H numbers (the specs closest to what you listed). For those who think it takes radical cams to make good numbers, you should pay close attention to the torque curve this mild cam produces.
WOW!!! Thanks brad i'm really glad to see those kind of numbers. i let the machinist i used pick the cam for me. i guess it pays to deal with poeple who know what they are doing. thanks for your time and effort Brad. man, i really can't wait to get this in my truck!
The chart didn't start on the last pull until 3750rpm but showed the following:
RPM HP Torque
3750 324 453.8
4000 330.5 434.0
4250 329.0 406.5
4500 321.9 375.7
4750 316.8 350.3
5000 322.8 339.1
5250 330.6 330.7
5500 338.5 323.2
5750 345.8 315.9
6000 343.1 300.3
6250 344.3 289.3
6500 334.8 270.5
We spent over three hours strapped on the dyno with jet changes and timing adjustments and tweaking different little things. I'm happy with the way the motor works and the low ratio gear set in the C6 really help with a good launch. I hope to get to Grand Bend on a test and tune night and try the 1/4 just out of curiosity.
can anyone run a dd for me i can't seem to decide on what cam to use.. im running a 76 460 9.5-1 d3ve heads mild port (clean up exuast) stock valves performer rpm intake, headers with 1.75'' primarys and 2.5'' dual exuast im stuck on either a 000096 lunati cam or the extreme energy 4x4 cams.. girnd FF X4 262H-11 or the FF X4 270H-11 or the cam they just ran up there Comp Cams X256H any thing else you need?
I have a 85 4x4 460 and want to get the most torq out of it. I want to put a holly 750 dubble pumper, Elelbrock air-gap manifold, mild head work with some ss valves and rocker arms parts, forged pistons, bored .030 over, crank .010 under and a roller cam. i need some help picking out a good a good cam.
I too am building a street 460, looking to make a lot of torque. So far I've ported,polished, bowl blended a set of d3ve heads and they are at the shop getting new stainless 2.19 intakes and 1.76 exhaust valves. Going to do the head work to figure out what the best pistons,cam, and cr. To use to get the most low end torque