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#1
08-07-2015, 02:47 AM
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Re: ANY OTHER ADVICE??
i would try timing at 4 or 2 degrees, see if it reduces ping. don't know shell gas down there but i avoid using it here. i had the same 10:1 327/275hp in a '69 impala (transplanted) years ago, it ran like crap on shell fuel, compared to other brands.
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#2
08-07-2015, 03:52 AM
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Re: ANY OTHER ADVICE??
Don't overlook the distributor advance springs. They may need to be replaced with heavier springs to prevent excessive timing advance.
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#3
08-07-2015, 04:02 AM
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Re: ANY OTHER ADVICE??
Is the gas an ethanol blend? Ethanol blends at even 10% can cause that. And Stihl chainsaws will overheat in a heartbeat on a mix with that stuff.
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