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Re: Pinging after 40-45 mins of driving?
Yes, a vacuum leak could make it worse, but it's a problem that needs to be fixed on its own. I prefer carb studs (vs bolts) and then use a torque wrench. Easy to break carb corners and thermostat housings.
I'd wager that fixing the carb and the vacuum line routing together will go a long way.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought
1969 Pontiac 2+2 427/390 4-speed Coupe
1969 Pontiac 2+2 427/390 4-speed Convertible
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