JJ

I have been reading the posts about tranny problems with shift kits in high mileage 700r4s. I was looking at a 2500-2800 stall and transgo shift kit for the original 700r4 in my 89 formula. The tranny works fine and I'd hate to wait for problems before I get a shift kit.

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87 IROC, 350/5 speed. gmpp 350, vortec heads w/some work, XE268, 1.5rr's, 650dp, rpm intake, MSD ing., ect.
89 formula, L98.

MrJ

85k isn't too bad.. if the tranny works OK then I'd do it. If it were 120k, I'd say otherwise.

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91 Trans Am WS6
Bright White
5.0 TPI auto
Flowmaster 3" 2 chamber catback
Trans Go shiftkit
2000 stall converter

Built on Wednesday

Josh 91RS

From what ive heard from most people, including a few shops, and probuilt, is that high miles are ok, as long as it still performs fine. If you are putting it in trying to solve some slipping problems it will just kill it. But as long as it is still in good shape, a shift kit isnt bad for it. I have 200,000 miles on mine...still contemplating as ive heard different opinions...but for the most part heard its ok as long as the tranny still works well.