04-14-2022, 07:03 PM

n20ta2

Ultimate Warrior

Join Date: Dec 2007

Location: Cape Cod MA

Posts: 1,004

Th400 speedo gear

Anyone know what gear set I would need for my th400 speedometer setup? This is for my original 69 gto th400 I just rebuilt. I have 3.73 gears in the rear with a 30" rear tire. Tried a few of the online calculators but just got frustrated with those.

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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!

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