Quote:
Originally Posted by nhcd538
Based on what I've found, the TH400 driveshaft is like 5/8" difference. I assume that won't necessitate a new or modified shaft. The yoke - does anyone have a part number or just look for one off a TH350 or 2-speed auto?
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Yes, an original '67 GTO w T400 had a 59 3/8" long driveshaft with the med length 3R T400 yoke. For a '64-67 Pontiac A-body with a small output shaft Muncie, you'll need a driveshaft 60.00" long center to center on the 3R ujoints. Thats assuming your cars rearend is:
-the original or a replacement Pontiac 8.2 10 bolt rear,
-or a late '67-70 Type "O" Olds 10 bolt (smooth 12 bolt cover),
-or '68-70 BUICK 10 bolt.
There are no visible part numbers on original GM driveshafts. Just different styles, & lengths. Originally there were color bands that quickly helped the assembly line worker ID the version of driveshaft shaft. Have quite a few excellent condition used driveshafts & have sold several dozen others. One of the expenses is today's crazy shipping prices. When I ship a driveshaft, it's an oversize shipment & I typ ship in a section of PVC pipe from Lowes to prevent damage.