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My first post!
Picked up the GP a couple of years ago. Traded a 2001 650 MC for it.
I am the 3rd owner. Have the original sales slip: $4900 including tax!
Talked with original owner as well.
In very good shape. Did have to replace front floor pans.
400 4-bbl auto 97,000 milesWork done so far:
Starter; water pump; fuel pump; timing chain; heater core; electronic module (HEI first year) and rear springs/shocks
Fighting rough idle issue. Just picked up a used Edelbrock 750. Rebuilt it same problem.
QJet that was on it had issues even after I had it rebuilt.
Maybe worn cam or valves? Compression check looked good. Lowest was 130 psiBut, it does not burn oil and rides nice.
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Beautiful car. As for your rough idle issue, how’s the ignition timing? If it’s off, it could cause a rough idle. It’s also possible that your carb isn’t adjusted properly, either it’s too rich or too lean. I don’t really know much about adjusting carburetors, but it’s a possibility.
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