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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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| | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 |
Tschall,
JB Weld has sealed a small crack in my 261 block for about 10 years. The 1" crack is above the casting plug on the manifold side of the block.
I first drilled a small divot (hole) at each end of the crack; then v-ground the crack; then cleaned the area very carefully; and finally covered the crack with JB Weld from divot-to-divot.
I'll admit that I think I am lucky, and I expect the leak to recur at any time. However, it was worth a try and it has held up beyond my expectation.
Tim
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