The 1947 - Present Chevrolet & GMC Truck Message Board Network

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- The 1969 - 1972 Blazers and Jimmys Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=36)

- - 1978 differentials (https://67-72chevytrucks.com/vboard/showthread.php?t=393212)

jcfoote60

03-20-2010 06:30 PM

1978 differentials

Hey does anyone know if the front and rear differentials from a 1978 1/2 ton 4x4 will fit under a 69-72 Blazer?

Jim

blazin 70

03-20-2010 10:29 PM

Re: 1978 differentials

The front diff should bolt right in but the rear end will not the spring pads on a 78 diff will have to be cut off and a new set welded on as the widths are different.I am planning on putting newer model running gear under my 71 also.

69BLAZYA

03-31-2010 09:17 PM

Re: 1978 differentials

the center bolt holes on the 73 up fronts are about 1/8" off on both sides, I just forced the springs outboardwith a pry bar

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