Z-28Willy

hey guys, i have a 1992 z-28 with the 700r4 tranny...it shifts from 1-2 at about 4500 rpm, is this normal, or is this a TV cable problem? what else could it be? how do i adjust it?

IROCThe5.7L

From what ive read, that seems about right. Though my 350 TPI shifts at 5200.

(You are talking about WOT right?)

[This message has been edited by IROCThe5.7L (edited August 05, 2002).]

mjcent922

Well if that's wot leave it be that's perfect.This allows you to manualy hold and shift at a higher rpm when racing.No higher than 5500 for a stock Tpi.Try and keep it between 5000-5500 as a shift point.Go out and feel where the power stops pulling and go back 100-200rpms andt there's your shift point.

GMTech

Is this just at WOT, or is it all the time? If its all the time, it sounds like the Throttle Valve is sticking in the valvebody. VERY common problem w/ the 700s. Sometimes you can yank on the cable a few times w/ the car not running and it will free up. TransGo has developed and patented a fix for this condition, thats why all of my rebuilds get the TransGo reprogramming kit.

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camaro85

Its most likely your shifter detent cable, the way you adjust is to have someone on the outside of the car press the button on the cable housing while someone inside the car pushes the gas petal to the floor, the cable assembly should move backwards, then as soon as they tell you the petal is to the floor, release the button and you are all good if this is your problem..