The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)

- The 1967-1972 Chevrolet & GMC Pickups Parts Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=8)

- - Early 60s Posi Rearend (https://67-72chevytrucks.com/vboard/showthread.php?t=56806)

alta-aj

06-15-2003 08:20 PM

Early 60s Posi Rearend

I posted this on the Engine and Drivetrain section as well:

I'm just wondering how good and how desireable a GM part# 3817778 Dana 3.73 Posi (I believe) crown, pinion and differential is. It is curreently in a 62 or so half ton.

Is it swapable into 67-72 trucks?

Al

crazy4chevs

06-15-2003 09:40 PM

rear

The rear should fit, but if i remmber right the early ones only have 18 spline axles and spiders. The newer 65-66 up had 30 spline axles and spiders. This means that it wont take as much abuse as the others.

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