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#1 |
Registered User
Join Date: Sep 2014
Location: Valparaiso, IN
Posts: 300
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Why does a GM starter bolt use a 14 mm socket and a 3/8-16 thread?
I have both sets of tools but why on earth would anyone mix the two? |
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#2 |
Registered User
Join Date: Sep 2010
Location: Winchester Oregon, formerly Vancouver BC
Posts: 2,949
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Re: Why GM? Why?
Should both 3/8”, someone screwed it up
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#3 |
Registered User
Join Date: Apr 2016
Location: san diego ça
Posts: 121
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Re: Why GM? Why?
Was very common with most american cars in the late 70s and 80s when we were converting to the metric system. Was extremely aggravating as a young mechanic having to load my cart up with both sets of tools to work on a POS smog turd with miles of vacuum hose's. A 9/16" socket didn't fit? usually pretty close...
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#4 | |
Registered User
Join Date: Sep 2014
Location: Valparaiso, IN
Posts: 300
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Re: Why GM? Why?
Quote:
Accountants should not be designing cars & trucks. |
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#5 |
But Found Her 25yrs Later!
![]() Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,523
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Re: Why GM? Why?
Yep, the 79 donor for my 66 was a mix of metric and SAE. It even had some where you had to use two different sizes. One size for the bolt, and another size for the nut.
__________________
I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
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#6 |
Registered User
Join Date: Apr 2016
Location: san diego ça
Posts: 121
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Re: Why GM? Why?
I hate to say it , but its almost comforting now when I work on an LS engine....One freaking set of sockets!
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#7 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: Why GM? Why?
Yall keep complaining until you work on old British cars. Metric threads, or Standard threads, with Whitworth head sizes.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING ![]() |
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