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Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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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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| | | | Joined: Nov 2002 Posts: 1,002 Shop Shark | | Shop Shark Joined: Nov 2002 Posts: 1,002 | You more than likely have an Eaton HO52 you won't destroy it time with a TH350. Your biggest problem is the rear axle ratio, it is probably 4.56 or higher. The best gear ratio you might find is 4.10. I would look at putting a 700R4 in it. The 700R4 overdrive would get your highway rpm down to 2200-2400.
Larry
I don't own a vehicle that isn't old enough to drink.
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