Do the Vortec heads fit the TBI? They're cheap. If not, what heads do you guys suggest? Please be specific i.e. price and where to get them. Thanks.

 

Vortec heads are cheap, manifolds are expensive. Also take into consideration that the stock springs only handle ~.460 lift, I have the Z28 spring thats supposed to be good for over .500. Also I run an Edelbrock Performer RPM Vortec manifold with a Holley carb ->tbi adaptor. I didnt get the gains I wanted but I finally tracked the problem to the fuel pump which is only pushing 13.5 psi, so thats another thing to keep in mind.