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Old 04-07-2004, 09:56 AM   #1
DCRANER
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Correct Speedo Gear ?

I know there are calculations for this, but to make it easier since my combination is not stock I thought someone may have the answer.

My 86 GMC came with a 700r4 and a 3.07 rear, and now it has a Turbo 400 and a planned 4:10 rear with a 28" tall tire.

Since the trans speedo plastic gears are so cheap & easy to change I will take a good suggestion and give that a try.

Thanks.

Doug
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Old 04-07-2004, 07:13 PM   #2
79BIG10
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http://www.73-87.com/7387garage/drivetrain/speedo.htm
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Old 04-08-2004, 07:30 AM   #3
MylilBowTie
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Here ya go http://tciauto.com/tech_info/speedo_gears.htm
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Old 04-09-2004, 06:03 AM   #4
jimfulco
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www.novaresource.org/speedo.htm
www.novaresource.org/speedo2.htm
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