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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Feb 2006 Posts: 564 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 564 | I know they used the clutch-head bolts/screws at least through the '62 model year, because I've got them on my truck.
Did they carry them thru the '66 body style?
And more importantly, when did they stop using them?
-Brad
SOUTHERN FALL GABfestOctober 6 ~ Commerce, Georgia Details here!Never Pee on an Electric Fence. | | | | | Joined: Oct 2006 Posts: 4,983 Master Gabster | | Master Gabster Joined: Oct 2006 Posts: 4,983 | "when did they stop using them?" Not soon enough!!!!!! 
~Jim
| | | | | Joined: Sep 2006 Posts: 841 Shop Shark | | Shop Shark Joined: Sep 2006 Posts: 841 | i have never seen one on 64 to 66 and i have had several. my 63 has a few but not many. i bet 63 is the last year. | | | | | Joined: Feb 2009 Posts: 37 'Bolter | | 'Bolter Joined: Feb 2009 Posts: 37 | my 46 GMC has no clutch head bolts. Did GMC use them? | | | | | Joined: Feb 2006 Posts: 1,867 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 1,867 | Id hasten a guess that the '60-66 trucks were the last to use them. Maybe even partially through those years.  | | | | | Joined: Jul 2008 Posts: 413 Shop Shark | | Shop Shark Joined: Jul 2008 Posts: 413 | Jeff'z,
The only GMC's that had clutch head bolts, were trucks that were built at a chevy Plant. Some GMC's were built at Chevy plants for a while. If you see a GMC with clutch heads, it was probably built at a Chevy plant.
That's one of the little things that made a GMC different from a Chevy.
What were they thinking when they invented the clutch head anyway?
Last edited by JeffL; 04/26/2009 2:38 PM.
| | | | | Joined: Feb 2008 Posts: 102 Shop Shark | | Shop Shark Joined: Feb 2008 Posts: 102 | What were they thinking when they invented the clutch head anyway? Same reason they use a Torx head... So mechanics have to go buy one more tool.  | | | | | Joined: Feb 2004 Posts: 29,846 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,846 | They stick onto the end of a power screwdriver better than a Phillips head screw. It was an assembly line speed thing. Torx was used for the same reason, but they were used with robotic assembly tooling.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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| | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | | | |
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