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04-07-2014, 11:52 AM
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#1 |
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Registered User
Join Date: Dec 2011
Location: Sapulpa, OK
Posts: 187
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Pinging 6
I can't figure out what I'm doing wrong...
Got a 235 with about 27k on it since rebuild, Fenton headers, Tom Langdon's HEI, and a 2-bbl Weber,3:38 rear end, granny 4 speed. I only run 91 octane gas. Truck runs great, but going up some hills at 50-60MPH, I get some pinging. It wasn't doing this 6 months ago - I've retarded the timing, but when I get it retarded enough to lose the uphill ping, it's too retarded to run at max efficiency. Spark plugs are toast brown, no other problems I know of. Reading Sharps40 disaster story kinda has me worried. Should I be? |
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