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Old 12-28-2015, 10:43 PM   #1
Kenney Kelley
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Default gear ratio

My son and I are building a 67 Chevy ll It has a 283 w/2bl it has a PG w208 low gear with 28" tires. my question is what rear end ratio should we use. It will be 1/8 mile only. Also if we decide later to go with a 200 3 speed will it make any difference in the rear end gear ratio? Thank You Kenney Kelley
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Old 12-29-2015, 10:45 AM   #2
Mike Taylor 3601
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Default Re: gear ratio

figure it with this formula MPH X Gear ratio X 336 divided by tire height = RPM
Allow 8-10 % for converter slippage.
I say 1/8 you could go ahead with 6.14, most likely use same with glide or 3 speed,just shift quick with 3 speed.
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Old 12-29-2015, 06:31 PM   #3
randy wilson
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Default Re: gear ratio

Quote:
Originally Posted by Mike Taylor 3601 View Post
figure it with this formula MPH X Gear ratio X 336 divided by tire height = RPM
Allow 8-10 % for converter slippage.
I say 1/8 you could go ahead with 6.14, most likely use same with glide or 3 speed,just shift quick with 3 speed.
Mike Taylor 3601
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Old 01-01-2016, 12:42 PM   #4
Kenney Kelley
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Default Re: gear ratio

I want to thank Mike and Randy and the Guys who PM 'd us with the info that we asked for. We appreciate everyone who helped us.

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