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04-30-2009, 05:48 PM
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#1 |
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Registered User
Join Date: Apr 2009
Location: San Jose
Posts: 1
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1955 Rear End
Hey Gang,
Just bought a 1955 chevy Truck. I came with a 350ci/TH250 upgrade. As far as i can tell, the rear end is stock. My problem is at 55mph i seem to be driving at a very high rpm. I spoke to a rear end specialist and he said i have that is a common upgrade and suggested i have a stock 3:90 gear and should go to a 3:38. But my friend that also has a 1955 truck said its not enough. I should go to a 3:08 gear. What are your experiances? thanks |
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04-30-2009, 06:03 PM
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#2 |
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Registered User
Join Date: Jun 2006
Location: Idaho
Posts: 8,800
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Re: 1955 Rear End
Welcome. Take a look at this recent thread:
http://67-72chevytrucks.com/vboard/s...d.php?t=329156 Discussion on tranny and rear end ratios. There are places on line that have calculators for rpm vs. transmission vs. rearend ratio. vs tire diameter.
__________________
1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project |
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