How much lift can i get out of my motor before the valve clearance is compromised. Im going to be using the larger valves on a set of 70 cutlass heads. I have a 76 350 with stock pistons and everything. Im going to be using a street edelbrock cam with 1.6 roller rockers. should I be worried at all? I think in total the lifts will be right around .500. Thanks

 

.500 is for stock rocker arms. With the roller rockers you're good in that respect, but you'll need to make sure you have the correct springs and pushrods and you'll be good to go.

 

I did a 350 with stock #7 heads and roller rockers with lift around .550, no issues whatsoever.

Which Edelbrock cam are you going to use?

 

Edelbrock 3712 Camshaft and Lifter Package
Duration @.50: I-204/E-214
Lift I-.448/E-.472 (.472/.503 w/ 1.6 Rockers)

 

You won't have any issue at all. What gear?
That cam will have decent street manners but it's a bit lazy. Are the heads going to be milled at all?

 

What in the world makes you think the specs are not with 1.6 rockers? This is advertised with the stock ratio which just so happens to be 1.6 so the advertised lift at the valve is correct as stated at .448 intake and .472 exhaust.

 

X2, those cams are always configured for the application. They all use the same profile just different rocker ratios.

That's a very mild cam, not sure what you're looking for.

 

I was told stock was 1.5

 

On a Chevy, but not an Olds.