Hey everyone,

I know that this is probably a dumb question, but what is the difference between the Vortec and non Vortec heads?

Thanks in advance for the help!!

-Tim-

 

A quick search should easily answer your question.

 

I guess my actual question is:

I have an 91 RS LO3, and I will soon be doing the TPI swap, what should I do about the heads? Will the LO3 heads work? Or what should I look for? My plans are to make a fun-to-drive yet still daily driver, so nothing to exotic or expensive. Plus, I am in Cali, so that probably limits me like crazy.

Also, what about a cam? Would I need to change that?

Thanks for the help!!

 

The LO3 heads aren't very high perf, you can grab TPI heads, 081 casting.

Vortec heads are a totally different ballgame, and would require a vortec intake manifold. A Vortec TPI base is somewhat expensive, but you could go that route if you wanted.

Yea, upgrade the cam, TBI motors got a WEENIE cam. Look at a comp roller that's computer compatible. Something like XR264HR-14 or whatever it would be. The second smallest one in the list IIRC.