Bigger Valves in Vortec Heads *Flow Data!* 

Does adding bigger 2.02/1.6 valves to your vortec heads get you more flow? or is it not worth the time and money?
Real flow data on stock Vortec heads vs 2.02/1.6 vs throat ported
*2.02/1.6 are not fully ported just pocket porting. Further gains can be found woth porting but be careful with removing too much material as vortec heads have thin castings!
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