T5 Swap Speedo gears

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07-25-2014, 02:10 PM

3wheelnuts

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Car: 91 TRANS AM GTA WS6

Engine: L98

Transmission: T5 5speed

Axle/Gears: 3.23

T5 Swap Speedo gears

HI Guys, I am getting my T5 ready for my 91 GTA and need to know what speedo gears I need to install. I have a 3.23 rear dif and 245/45 16 tires.

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07-25-2014, 07:49 PM

jmd

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Car: `86 SS / `87 SS

Engine: L69 w/ TPI on top / 305 4bbl

Transmission: `95 T56 \ `88 200-4R

Re: T5 Swap Speedo gears

One way:

If it was correct, determine the ratio of the 700-R4 gears.
Then choose the closest combination of gears for the T5.

700-R4 with 15 / 43 = 2.86^ ratio
T5 needs 7 / 20 = 2.857 ratio

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