has no power

1981 CHEVROLET MONTE CARLO
125,000 MILES
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DERBYNATE76
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81 Monte Carlo with a 267 V8, it starts and runs perfect in park but when I put it in drive or reverse it bogs down and has no power! I put a new starter, vacuum valve on the trans., new battery and new base plate gasket on the carb. I have also looked for vacuum leaks everywhere and cant find one. What would cause this?
Apr 21, 2012 at 6:26 PM
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ASEMASTER6371
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it sounds like the carb itself. it may need to be rebuilt. you need to find a older tech from my day that still rebuilds them they are very expensive to replace. i still do them for about 450 done and out the door.

Roy
Apr 21, 2012 at 6:28 PM