Re: difference in heads
Vortec heads might cost you more than you think. They require a different intake manifold, they require different valve covers, etc.
A 215cc runner head is too large for a 350 that is used for the street. 180cc or 195cc runner is plenty.
69 Camaro -originally a LM1 car. 327, Edelbrock E-streets, hooker, DUI performance distributors, ultradyne cam, stewart, TRW etc. Vintage Air, AGR steering, Corbeau GTSII seats, 700R4 transmission, 12-bolt w/Eaton 4.11:1