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| | | Forums66 Topics128,034 Posts1,055,548 Members48,425 | | 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: Mar 2011 Posts: 204 'Bolter | | 'Bolter Joined: Mar 2011 Posts: 204 | i have a 55 1st. series 3600 with a four speed transmission,(i dont use the first gear) that i can get up to 55 mph but the engine is screaming.i have the truck for light lumber yard pick-ups and do not plan on towing. the numbers on the rear are NG1007 (on top) and 8699535 (on the drivers side).can anyone tell me what gear ratio i have and what gear ratio i would want? i do not intend to go faster than 60 mph. | | |
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