cam ideas guys???

[von guido]

Originally Posted by olblue81

Agree on checking out the engine forum here.

But I'll throw my $0.02 in here. With stock heads definitely go on the conservative side. Stock heads typically don't flow much more from .500" lift and above so avoid a cam with more lift than that. Larger duration will make the cam sound better at idle, but you have to rev it higher for the cam to work. From my experience a larger cam will make more power than a smaller one, but it's gets boring waiting for the motor to "come up on the cam". For example, the 350/327 cam I have doesn't really start to pull till 27-2800 rpm. With the stock heads it is wound out by 5200- that's a pretty small window really. I'd prefer something that started pulling about 500 lower and I have a 2wd so no 35s to try and spin.

Newer cam designs are much better than what I have, but it does reference my point. Comp Cams do make a neat FREE engine simulator that will help you select your cam.

you have the right idea.... stock sbc valvesprings will only handle up to .480 lift. Go bigger and you have to worry about breaking a spring,piston to valve clearance alongside a sluggish motor. I would not put a "268" cam in a 4x4 because the rpm band. I would recommend like someone else said, a 4x4 specific cam or a comp high energy cam.