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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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There is a gasket on the drivers side of the SM420 4 speed transmission, with if I remember correctly 6 bolts. The gasket needs sealant on it. I use Permatex Copper Spray-A-Gasket on the paper gasket and #2 Permatex Form-A Gasket o the bolts. that should stop your leak. You might just want to check to make sure the bolts are tight...1/4 turn until tight. Don't distort the plate.
Tim
"Pay attention to the details! It ALWAYS pays off."
1949 Chevrolet 3100 Series 1/2 ton Pickup
1964 Chevrolet C10 (Ol' Yella) (SOLD)
1958 Chevrolet Biscayne 2 door (SOLD)
1970 VW Beetle
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