COMP Cams Thumpr Camshaft Hydraulic Flat Tappet Lift 0.512/0.498" Duration 278/296 - 107 LSA 91609089 1999-2004 Chevrolet Silverado 2500 78

1999-2004 Chevrolet Silverado 2500 78

890 in Long

and include all the fittings and gaskets

Diaphragm / Screws

This is simply a piece of tubing that takes the place of what would be a Mass air meter in the later 89 up cars

COMP Cams Thumpr Camshaft Hydraulic Flat Tappet Lift 0.512/0.498" Duration 278/296 - 107 LSA 91609089 1999-2004 Chevrolet Silverado 2500 78Performance street with good low end, stock converter ok, needs gears. Choppy thumping idle. The COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development. One thing COMP Cams has never forgotten: Performance is defined by what happens out on the race track. Because no matter what happens on a dyno or in a computer model, if that theoretical performance doesn't translate