turbo engine: camshaft questions

66_turbo347 · 05-22-2003

Ok, i am building a turbocharged 347 stroker engine but i was wondering what camshaft i should use. i kinda like the x-303 but i would like to know if it's too aggresive for a turbo engine. Any recommendations would be helpful.

Thanks

Fast1 · 05-22-2003

Id go w/ a custom cam like anderson,lunnati,comp ect

66_turbo347 · 05-22-2003

what sort of Lift/duration would be recommended for a custom grind??

Fast1 · 05-22-2003

You'll jut give themall ur engine/car specs and theyll do the hard work for ya

66_turbo347 · 05-22-2003

Thanks for your help i guess ill check up on that and order one, thanks again

JUSTNLX · 05-23-2003

I've seen great numbers from a stock 5.0 HO cam. Why? Because the stock cam has 116 deg lobe separation.

Lobe separation is important in a turbocharged engine. You don't want too much overlap. This causes boost to blow out an open valve. 116 lobe separation is the bare minimum.

Since the turbocharger pressurizes the intake system, filling the cylinders is your least problem. Getting the exhaust out is more important. The exhaust should have at least 10 deg more duration than the intake.

As far as lobe lift goes, that depends on your engine size, cyl. heads, and turbine AR (rpm range of the turbo)