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#2
11-25-2019, 05:15 PM
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I am very curious about this chart but a little confused.
My big old Chrysler weighs in at 4100 lbs and had a 383 with a 3.38" stroke. I have 3.23 gears in the rear end so 3.23x 3.38 is 7.91. If I look at a 3.38" stroke and a 4,000 LB car it says I should be 11.75 is my gearing really that far off? 
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#3
11-25-2019, 07:43 PM
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Look again. The chart says multiply your axle ratio by transmission first gear ratio. Your torqueflite has a 2.54 first gear, so 3.23 x 2.54 = 8.20
The chart, I'm sure, provides the "ultimate" gear ratio for acceleration from a standing start and doesn't mention tire size, which is a factor among many others... This is useless information for your fat Chrysler... it's built for smooth, luxurious comfort, not neck-snapping stoplight launches. .
__________________
- The distinction between psychological illness and creative thinking is wafer thin - 1937 Chevy Coupe 1938 Chevy Sedan Photo Posting and Resizing
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#4
12-05-2019, 01:43 AM
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Quote:
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#5
12-05-2019, 08:26 AM
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As Dr Crank said, I think this isn't as useful as it appears. Without factoring in tire size and other factors (like cam and engine specs to start), this doesn't seem to result in anything helpful, in my view.
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My 455 Buick powered '46 GMC Build Thread My '46 GMC on Photobucket --------------------------------------------------------------- When you don't know what you're doing, it's best to do it quickly. And when I’m gone, you can call me foolish but hopefully not boring. I will have lived. The more I learn about women, the more I like my car.
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#6
12-05-2019, 08:46 AM
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Here's a really good calculator for finding out the desired rpm and tire size.
https://www.reillymotorsports.com/sp...alculator.html
__________________
53 AD Chopped, sectioned and narrowed 1933 Pontiac 401 GS Nailhead 1935 Dodge pickup Blown Big Block 38 Ford Bobber 1948 GMC 5 window 51 Chevy 5 Window 37 GMC 53 International
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#7
12-05-2019, 09:47 PM
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Quote:
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#8
12-06-2019, 12:38 AM
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Quote:
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__________________
- The distinction between psychological illness and creative thinking is wafer thin - 1937 Chevy Coupe 1938 Chevy Sedan Photo Posting and Resizing Last edited by Dr Crankenstein; 12-06-2019 at 01:03 AM.
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#9
12-06-2019, 10:05 AM
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Rear end gear seems a little high for "drag" racing.
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