Driveshaft uinv joint bolts?
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Geez...you guys come up with the most "off the wall" stuff...
I believe it was the late '70s/early '80s when GM went through their "METRIC" phase. They trained us all in metric measurements, told us how everything world-wide would go metric, started buying machinery that was built to metric specifications [and then used it to manufacture parts specified in "English" dimensions], and threw metric fasterners at the end-product to prove that we were converting. It wouldn't surprise me that there were some pretty weird assembly combinations in that time frame. [What a hoot to remember all that monkey-business!]
I believe it was the late '70s/early '80s when GM went through their "METRIC" phase. They trained us all in metric measurements, told us how everything world-wide would go metric, started buying machinery that was built to metric specifications [and then used it to manufacture parts specified in "English" dimensions], and threw metric fasterners at the end-product to prove that we were converting. It wouldn't surprise me that there were some pretty weird assembly combinations in that time frame. [What a hoot to remember all that monkey-business!]
Team Owner
Joined: Aug 2000
Posts: 21,468
Likes: 463
From: Massillon,Ohio USA
2020 C3 of the Year Finalist - Unmodified
Cruise-In VI Veteran
St. Jude Donor '08-'09-'10-'11-'12
...I thought the driveshaft bolts at the differential were a 1/4" 12 point bolt head design, not a Torx. I know the '80/'81 4spd cars with the steel spring had those Torx "E-10" size head bolts on the half shaft u-joints, but used those 1/4" 12 point ones on the differential u-joint.
...I also think it was 1978 where GM started using "some" metric fasteners-usually the head bolts were a light blue.
...I also think it was 1978 where GM started using "some" metric fasteners-usually the head bolts were a light blue.
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