I'm debating using either some form of Vortec head or the 170cc E-Tec's. Help? It's either vortec or just plain old Perf RPM heads. I can get them relatively cheap so thats why I was considering those. I'd like to get Trickflow or AFR heads but the money just isn't there right now. I want to upgrade my intake and camshaft as well. Was thinking a Vic Jr intake, XE274 cam w/1.6 rockers and upgraded carb from 650 to 750 DP. What are your thoughts on Vortec heads and/or the RPM's?

 

Had the same debate myself when I built my 363. Ended up choosing the 170E-Tec heads, an air gap intake, Comp 280HR roller, and a Demon 650 carb for good street manners and driveability.

So many choices... Good luck!

 

Demon: If you want to use a Vic Jr, use a more radical cam than the Xe274H.
Use a XE284H Xe294H, or 292H magnum a little more compression, gear and torque converter stall (3500stall).

If you want the use the smaller Xe274H cam, match it up with a Performer RPM manifold or another hi rise dual plane manifold. You'll have a lot more average torque than the Vic Jr manifold with the XE274.

The vic Jr wants more rpm and gives up low mid torque to get it, compared to the RPM manifold. match it up with a camshaft that will deliver the mid to top end that vic JR is best at.

Check out http://store.summitracing.com/partde...5&autoview=sku These budget aluminum heads from Summit.