Quote:
Originally Posted by John V.
Review post #11.
If you have the original driveshaft in the ‘65 auto trans Tempest it should NOT have the rubber isolated driveshaft. That driveshaft was ONLY needed when the Chevy Powerglide was installed behind the 6 cyl in ‘64.
The Powerglide was only used occasionally in ‘64 but was NOT used in ‘65 so you should NOT expect your driveshaft to be rubber isolated.
The ‘65 auto trans Tempest regardless of engine should have the same driveshaft that was used in ALL ‘64 Tempests including GTO regardless of transmission or engine except for the occasional 6 cyl with Powerglide.
The ‘65 manual trans Tempest did get a new driveshaft that was likely beefier but otherwise interchanged with the auto trans driveshaft.
The driveshaft was factory balanced. The one you SHOULD have was sufficient for a ‘64 GTO. 325 HP net would be more than the 348 HP gross that a ‘64 Tripower GTO was rated but I suspect should be okay at that power level. Never heard of a factory ‘64 GTO driveshaft breaking but I’m no racer.
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I checked and it is the regular drive shaft no rubber.
Thanks Greg