Jesel's New Sportman Series Shaft-Mount Roller Rockers Bring Bulletproof Racing Technology To The Bolt-On Street Car Ranks Shaft-mounted rocker arms are usually reserved for the high-stress ...
Last time we had Project 505 on the dyno was for the September 2007 issue of Mopar Muscle when we were testing the new Holley Ultra HP carbs. During that test session, we saw 738 horsepower from the ...
Last time we had Project 505 on the dyno was the June 2010 issue of Mopar Muscle when we modified our Indy EZ heads for Jesel rocker arms. During that round of dyno testing we saw a peak of 805 ...
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