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Click on image for the lowdown. 
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| | Forums66 Topics128,052 Posts1,055,725 Members48,426 | | 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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| | | Joined: Dec 2003 Posts: 1,144 'Bolter | | 'Bolter Joined: Dec 2003 Posts: 1,144 | could depend on your rpm as well some transmissions and rears just seem to have a sweet spot. In the 80's I was driving cummins power with roadranger transmissions. Some folks like to wind them out to 2100 rpm every gear I found shifting at 1900 to be smoother. So experiment with your rpm a little also how fast you jump back on the throttle is an issue since the rpms have to drop the higher ratio rear. Now we shift at 1400 rpm oldtimers would be rolling in their graves if they could see it. | | |
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