Quote:
Originally Posted by Hank70SS
Is the 290 HP crate engine a roller cam engine?
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Nope.
Specs per GM...
The 350/290 HP engine uses an aggressive flat tappet camshaft to achieve the level of performance for its intended usage.
Camshaft lift is .450” intake / .460” exhaust. Camshaft duration (@.050”) is 222 degrees intake and exhaust.
Lobe centerline is 114 degrees.
Normal engine manifold vacuum for the 350/290 HP engine is 10-12” Hg at idle (650-750 rpm).