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Old August 2nd 2004, 16:52
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Wally Wally is offline
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Join Date: Nov 2002
Location: The Netherlands
Posts: 2,528
Change and try or reserve dyno time...
Your popping is more likely an intake (vacuum) leak and your cam seems very very wild for that engine, which could result in a very bad mixture from idle to mid-revs and subsequent bad burn, meaning too lean a burn, resulting in excessive heat...
Maybe a slightly bigger idle jet (52?), bit smaller air correction (190). Test and try...or get a wide band CO metering device (

'75 Super.
...because race car!
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