Thread: pinging
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Old 12-10-2017, 11:26 AM
olddog olddog is offline
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Join Date: May 2006
Location: St. Louisville, Oh
Cobra Make, Engine: A&C 67 427 cobra SB
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Not sure what the other cam was but it looks like it was closer to the 294. Perhaps a 5 or 6 degree change in when the intake closes. Advance or retarding the cam could make another 1-3 degree change on top of that. Here are some links to cams.

XR-294-RF-HR - intake closes at 73 ABDC
35-427-8 - Xtreme Energy

XR-288-RF-HR - intake closes at 70 ABDC
35-426-8 - Xtreme Energy

XR-282-RF-HR - intake closes at 67 ABDC
35-425-8 - Xtreme Energy
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