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Click on image for the lowdown. 
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| | | Forums66 Topics128,030 Posts1,055,424 Members48,422 | | Most Online14,466
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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Sep 2007 Posts: 2,644 Shop Shark | | Shop Shark Joined: Sep 2007 Posts: 2,644 | What about changing the rear end gear ratio? Do you want torque at the flywheel or rear wheels? An SM420 with a 6:1 low gear seems like you'd have all the pulling power you want unless you want speed too. | | |
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