What is the best cam for a big block Chevy with a tunnel ram?

Answer 1

I warn you, if this is not a serious performance motor, the correct cam will make the car impossible to drive on the street. Tunnel rams are for real race cars, which run better with a single carb, anyway, or a trailer queen, which is all show, and no go.

The best cam will idle at aboput 2000 rpms. Will not run at all under 3000 rpms,. will need low rear gears or it will not start out from a light, and a high stall converter. And, you will have to rev the motor to 7500 rpms, to make power.

Having said all of this, I would run 2 660 Holley center squirters, mounted sideways, on a Pro Ram. The old "shoebox" tunnels are worthless. You are going to need a barometer, and a vaccuum gauge to set these up, DAILY.

You are going to want a lot of lift, and duration, with very aggressive valve timing, and a lot of advance built in. I would advise you to contact LUNATI. They have the most helpful staff, and the best grinds available. I do not run anything else.