I was looking at the Comp Cams catlaog at their 68-200-4 cam, it is 252 adverised duration and 206 @ ,050. I checked my Mopar Jeep engines book, and it quotes the adverised duration of the stock @ 270 deg. it does not show ,050 numbers. Lift o the Comp cams was .433 and the stock was .405 So the Comp cams does open a little wider, but seems to have a shorter duration.
Has anybody else looked at aftermarket cams vs the stock 4.0 cam?
Cam Question
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Plechtan
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Cam Question
Peter Lechtanski
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RAPTORFAN85
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Re: Cam Question
Stock duration at .050 is only 197. It ramps up slowly, peaks quickly and then slowly ramps down again. Not very performance oriented. I have looked at stock vs. after market cams. I ran the stock cam for a little while and I wasn't impressed. I am in the process of swapping in the comp 68-201-4 with a set of 1.7 roller rockers. My end specs will be .475 lift, 260 dur. advertised and 212 @ .050, LSA of 110 and 4* advance. I will let you know the results when I finally get it back together.
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Billy Squire
Billy Squire
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