vortec heads???
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i have a 1990 chevy silverado with the 5.7 350. i havea coolant leak so i'm puting new head gaskets on and i was wondering if i put vortec head on the motor if it would do anything for me as of horse power or gas mileage? or will it do absolutly nothing for me? and i was alsowondering if they would fit on there just fine or would i have to change other things? thanks alot guys your comments help out great.
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