The Vortec heads flow great but machine work needs to be done to them to accept a larger lift cam...and you can be limited on your intake manifold choices when using them as well.
My engine is in the same boat as Bens, 400 ft lbs to the rear tires at 2000 RPM and 300 hp at about 4000 RPM. It starts running out of breath after 5,000 RPM. It's fantastic for smaller tighter autocross courses but is limited on the larger national style courses by the lack of high RPM hp.
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Lance
1985 Monte Carlo SS Street Car
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