RobZ28

A mechanci told me my car has a Manual Valve Body. WHen I drive aroudn town though and put it in D or OD it shifts itself. I heard though if you have a manual valve body,you have to shift it yourself al the time. So does my car not have a manual valve body or is it able to shift itself. Also when I put it in D or OD it gets into the highest gear before i get to 25MPH. P.S. I'm pretty sure i have a TH-700R4 or 4L60.

dhpewterz

iTrader: (2)

with a manual vavle body you would have to shift it all the time it wouldnt shift on its own yours prob dont have it. is the tranny stock?

RobZ28

Teh machanic said that it had a shift kit and that when I race, I have to shfit manually. I also could have swore he said a Manual Valve Body. I know when I have it in Od or D and floor it the car shifts around 4000 RPM if that helps.

00cls1camaross

iTrader: (10)

well i think if you have a manual valve body you have to shift it manually unless it is electronicly shifted... im pretty sure the LT1s have 4l60... and LS1s got the 4l60E.. electronicallly shifted

ntense

I have a manual valve body in my car, and yu do have to shift from 1 to 2 to 3,, I would go with a different mechanic.

94 z28 A4

I have a 1994 z28 Lt1 and it has a 4l60E .

MountainMotor

iTrader: (2)

If you have the stock 4L60 tranny, then you don't have a manual valve body.

RobZ28

I'm sure the tranny isn't stock. He was telling me how the Tranny looks rebuilt and has a shift kit. It also sounded like he said it had a reflashed Converter.I'm starting to think who ever had the car before me might have done a tranny swap. I know they started to use the 4L60E in 94. 93 had the 700R4 so maybe a 4l60e was swapped in?I just don't know how to tell the difference between trannies.

Strahley

iTrader: (4)

A manual valve body will never shift on it's own. The only way to make it "automatic" is to use a RPM activated shift solenoid on an aftermarket ratchet shifter. At least to my knowledge, that's the only way. I agree, I would look for a mechanic elsewhere!

Irocss85

iTrader: (1)

93 Fbody's came with a 4L60, not a 700r4 or a 4L60E. the only diff. between a 700r4 and a 4L60 are some internal updates. both are TV cable operated. what the mechanic was prolly telling you is it has a shift kit in it, and that most shift kits make the trans an auto/manual operation. in otherwords, it will shift automaticaly if left in D or OD, but you CAN manually control the shifts if you put it in low or 2 gear. Id suggest manually shifting it also for best track results. I have a 700r4 (that I swapped in place of my M6) and when left in D while racing, it will not shift at the best RPM and each diff. gear will shift at a diff. rpm too.

BTW, they do make manual valve bodys for 700r4's and I believe (but not sure) it will also fit a 4L60, but not a 4L60E.

chris

RobZ28

Alright thanks Irocss85. Your post helped me alot.I knew 93's had a 4L60 but most people get it confused with a 4L60E and since its alot like the 700r4, I just said the 700r4. Maybe the mechanic did say what you said. It was pretty heard ot hear him over all those machines.