Join Date: Oct 1999
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Re: Vortec engine in TBI truck
TBI and vortec engine have a 20-40hp difference right out of the factory. so, you might notice a difference. you'll need the computer with the engine.
or you can go with a vortec heads, TBI/vortec manifold, and TBI unit.
to get more air into the engine - first off, have you tried modifying your air intake system? if not, do that first. it makes a difference right off the bat. i know, i did that mod.