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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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#36295 01/12/2004 2:48 PM | Joined: Jul 2003 Posts: 252 Shop Shark | | Shop Shark Joined: Jul 2003 Posts: 252 | Went hunting for a set of fresh plugs for the '61 235cid in the Apache. Old plugs were R45T AC Delco. All I could find quickly was a set of R45 Delcos. The R45's use a compression ring at the base and have 13/16" lug as opposed to the 5/8" that came out of there. The new ones fit fine, and I gapped them appropriatly. However they seem to be a little "shorter" in terms of what is exposed on the INSIDE of the head (in the combustion chamber). Am I looking for trouble with these plugs? | | |
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