78 front diff mount question

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Apr 7, 2017 | 06:50 PM

lonzoo

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From: Ohio

78 front diff mount question

Does anyone know what size bolts go in the front 2 holes of the mounting bracket? I need a new bracket and my front bolts are 1/2 inch. All the one's I am finding say the are drilled for 7/16. Possibility someone drilled and tapped holes because of sloppy worn holes?? I am confused.

Apr 8, 2017 | 11:50 AM

MelWff

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what do you mean by tapped holes?
the bolts go through the bracket and differential and use nuts.

Apr 8, 2017 | 12:01 PM

redvetracr

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From: WI

Quote:

Originally Posted by lonzoo

I seem to remember a diff I had that took two short bolts in front into tapped holes and the rear bolt was a long through bolt, is that an early (like 63) diff? I have a few extra pinion brackets if your interested but I think they all take a 7/16 bolt

Apr 8, 2017 | 06:01 PM

lonzoo

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Thanks guys for your input. I think I figured it out. Someone drilled and tapped the front 2 bolts to 1/2 to eliminated the problem of getting the long bolt out due to driveshaft tunnel blocking the bolt removal. I rebuilt the bracket by welding spacer over rounded elongated holes and is back on the car..thanks

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