i want to put GM vortec heads on a 1990 350 out of a silveraldo it says i need a vortec style intake and self adjusting rockers can i use these on this year 350 and if i can what would be the best brand to use ????

 

you definately need the vortec style intake,tbi or carb.you are still required to use the vortec style.as for the rockers you need SELF-ALIGHNING rockers.if they were my heads i would put larger valvesprings on and put screw-in studs as a minimum 2.00 1.56 valves would really be a benifit,you can get scorpion roller rockers for a mild set up or get the comp cams roller rockers for heavy duty rpm loads and strength.......

 

You can use non-adjusting rockers but will require guide plates and harden pushrod. Screw in stud is a plus if you plan on high lift/high reving engine. Use of larger valve spring would only be recommended if you go with a high lift cam as well as 1.6 rockers. This will require the heads valve guidesto be machined for higher lift. Do a search on thirdgen.org and you will get alot of info on vortec heads.

 

Yea, if you want a decent lift cam then get your valve guides machined, other than that I run an Edelbrock Performer RPM manifold with a carb -> tbi plate. Edelbrock also makes a throttle bracket that you'll want to use with vortec heads.

 

Why not use the Edelbrock air gap rpm manifold. It's about $225.00 from summit.

 

i have a set of fastburn heads and vortec/fastburn tpi intake for sale just in case your buying new.

http://web.camaross.com/forums/showthread.php?t=329721