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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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
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#32706 02/09/2004 3:06 AM | Joined: Sep 2003 Posts: 343 Member | | Member Joined: Sep 2003 Posts: 343 | Well I have a new problem, the first step in degreeing a cam is to determine the exact TDC. To do this I usually use my trusty Piston-Stop inserted into the #1 spark plug hole. The problem is the angle of the spark plug hole does not allow the piston-stop to come anywhere near the piston! Does anyone know another method to accurately determine TDC on this type of engine (261). The best I was able to come up with was to turn the engine upside down on the engine stand and move the crank by hand until I thought the #1 connecting rod was straight up & down and then set the degree wheel to 0. I hope someone has a more accurate way than this.
1954 GMC 1/2-ton Longbed
1971 Pontiac LeMans Sport
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