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Click on image for the lowdown. 
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| | | Forums66 Topics128,087 Posts1,056,119 Members48,435 | | Most Online14,466
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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Apr 2014 Posts: 924 Shop Shark | | Shop Shark Joined: Apr 2014 Posts: 924 | 1/4"-20 flathead , maybe 5/8" or 3/4" long.
Or at least mine were on a 55.2.
Brad
Wrench Fetcher, PhD | | |
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