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[ QUOTE ]
Try this: http://www.geocities.com/MotorCity/D...00/cmspec.html the factory did make some changes on casting# 3904366, part# 39043362 camshaft over the #143 cam. Valve events and duration are a little bigger. [/ QUOTE ] If the specs are different on the measurement, I would assume that it is the variance in production tolerances. Jim PS.....Colvin has a blue print in his "Chevrolet by Numbers 70-75" in the camshaft chapter on the 3904366 casting.
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1970 LS-6 Chevelle Going fast on Goodyear Polyglas. 12.21 @ 115.32 PSMCDR 2009 12.24 @ 114.30 PSMCDR 2010 |
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