Posted by DAVE9
on October 20, 2009, 12:19 am
69.92.217.122
Camshaft and lifters must be hydraulic with a maximum of 450 lift at the valve. (Tech Clarification: In order to maintain a 450 lift on your camshaft you must not exceed a camshaft lobe of 290 degrees with 1.6 rocker arms, which will measure a 450 lift. Also, a 450 Lift Cam with 1.5 Rocker Arms will measure a 450 lift. Be advised that a 450 lift cam with 1.6 Rocker Arms will measure a 480 lift at the valve, which will be deemed illegal. Know what your camshaft and rocker arm combination produces in order to not exceed a 450 lift measured at the valve.) and engine must hold 15 inches of vacuum at 1000 RPM
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