TBI Head work

[ftn96]

Whats the most that can be done to TBI heads at the head shop without getting stupid? Port, polish, larger valves, etc etc........ And how would they compare to Vortec's?

 

[HarryH3]

Once you price the cost of porting, new valves, etc., the Vortec heads will suddenly look pretty cheap. /forums/images/icons/shocked.gif Porting takes a lot of time, so the labor hours start really adding up. Someone that really knows what they're doing can make any set of heads flow better. But I don't know if they can do anything to a TBI head to make it flow as good as a stock Vortec head. /forums/images/icons/frown.gif

 

[JIM88K5]

You are correct about the porting being labor intensive and the vortec heads looking like a good deal -but- you gotta add to the cost of the vortec swap the cost of a new intake, egr pipe, and a new LH ex manifold or a little fab work to you header for the external egr supply. World Products makes a replacement head that out performs a stock head and is 50 state legal.
Jim