Do you have to pat the gas a lot to get it to start cold? If you fill the exhaust with unburned vapor and then throw an exhaust flame into that, it'll bang pretty good. Also verify base timing hasn't slipped and become retarded.
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I could explain all this to the girl at the parts store, but she'd probably call the asylum.
White '67 LeMans 407/TH350/Ford 3.89... RIP
Red '67 LeMans. 407/TH400/Ford 3.25
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