Thread: Engine breaking up above 4000rpm
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Old 01-30-2024, 08:11 PM
74Grandville 74Grandville is offline
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Location: Plainville, CT
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possibly secondaries going lean? I'd go with a fuel issue.

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1979 Firebird Trans Am 301/4spd (Now 428)
1977 Firebird Formula 400/Auto
2007 Grand Prix GXP 5.3L
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