T5 upgrades?

[79 Fox]

Hello! I am T5 swapping my fox and need it to handle a good bit of power. There's a kit by G-Force that includes gears and mainshaft for $1,500 that can handle 600 hp and 500 pound feet of torque. It is for the world class transmissions only. Other than this and clutch upgrades, what else do I need? Has anyone else used this upgrade kit?

[erratic50]

Astro performance also makes a similar gear set

Astro makes a 1 piece steel bearing retainer

there is also a brace available for the midsection of the case.

Astro also makes a fortified steel case.


i had a Gforce T5 built for my 85 project car with the Astro bearing retainer and the mid brace. I went 0.59 on the overdrive because that puts the final drive ratio of my 3.55 rear gears with a 0.59 at the same place as a 3.08 with a 0.68. 1-4 close together with lots of acceleration, 5th spaced out a long ways for cruising. I won’t actually need 5th during aggressive pulls really. Building a motor with a 6500 redline. Good to go until around 150 then 5th is required.

[ZephyrEFI]

Hmmm, this idea of a different 5th gear for lower highway RPM intrigues me, said the guy with 4.10 gears...

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