Removing Driveshaft

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Criste

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Joined
Dec 25, 2008
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27
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Dundee, MI
I'm removing the driveshaft from my 1982 and having trouble determining bolt size used on the straps that secure the universal joint to the differential yoke. It looks like a torx type bolt, but the ones I bought to remove the straps on the half-shafts don't fit. Anyone know the correct size?

Thanks, Jerry
 
Dunno for sure, but every once in a while GM would toss in a stupid 12 point bolt, it would sorta look like a MALE torx head what with 12 points on it....but it's NOT, maybe that's what you have???

I have always tossed them and stuck on 6 point bolts, .....

:gurney:
 
It's an inverted torx, PITA to find the right socket. Do not use a 12pnt socket, you'll round them off. Because of this, I replaced all of them w/ 12 pnt NAS (aircraft) hardware, never that prob. again.
 
Criste said:
I'm removing the driveshaft from my 1982 and having trouble determining bolt size used on the straps that secure the universal joint to the differential yoke. It looks like a torx type bolt, but the ones I bought to remove the straps on the half-shafts don't fit. Anyone know the correct size?

Thanks, Jerry
Click to expand...

If they are the ones I think they are, I use a deep 1/4" 12 point socket, with about 3' of 3/8 extensions stacked to twist them from way up front.
 
Last edited:
big2bird said:
Criste said:
I'm removing the driveshaft from my 1982 and having trouble determining bolt size used on the straps that secure the universal joint to the differential yoke. It looks like a torx type bolt, but the ones I bought to remove the straps on the half-shafts don't fit. Anyone know the correct size?

Thanks, Jerry
Click to expand...

If they are the ones I think they are, I use a deep 1/4" 12 point socket, with about 3' of 3/8 extensions stacked to twist them from way up front.
Click to expand...

Bird, that's what I would have sworn I seen on some shark at least once, 12 point bolts, take a 12 point socket, and 1/4-5/16 shank....but like I say, as I recall my 3/8 12 point socket I bought years ago for Pontiac Fuel pumps was the tool of choice....

:smash:
 
big2bird said:
Criste said:
I'm removing the driveshaft from my 1982 and having trouble determining bolt size used on the straps that secure the universal joint to the differential yoke. It looks like a torx type bolt, but the ones I bought to remove the straps on the half-shafts don't fit. Anyone know the correct size?

Thanks, Jerry
Click to expand...

If they are the ones I think they are, I use a deep 1/4" 12 point socket, with about 3' of 3/8 extensions stacked to twist them from way up front.
Click to expand...

Thats what i use to get to the rear strap bolts. a universal 12 point socket works real good on these bolts.
 
Thanks for the quick response from everyone. A 1/4" 12 point socket on 8-10" of extensions did the trick. Broke the bolts for the trailings arms loose, so they'll be coming off next.

Thanks again for all the help.
 
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