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Old 02-20-2004, 05:00 PM
Jim Hand Jim Hand is offline
Performance Pontiac Author
 
Join Date: Dec 1999
Location: Lees Summit, MO, USA
Posts: 933
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Guy,
If you mean by "better off" that your engine will run smoother and idle better, the 041 will do that. If you mean which would be quickest at the track, that would require a series of timed tests with each installed. In any case, try a range of shift points - the CC Magnum series of cams you are running tends to run out of power earlier in RPM then comparable duration wider lobe separation and dual pattern cams.

Concerning porting intake only, if intake porting helps, that means more air/fuel into the cylinder. That means more exhaust to get out of the engine. I would much prefer excess exhaust flow rather then not enough! And this is true especially with a single pattern cam. Why not port the exhaust?

If the cam is installed as suggested by Comp Cams, it will have the intake LC at 106 and exhaust LC at 114, for a total advance of 4 degrees. Two additional degrees of advance will move the intake to 102, which will likely shorten the existing power range. While that might crutch the bigger cam's effect with an auto trans, I doubt that that change would benefit real strip performance with your manual trans.

Jim Hand