700r4 shift prob

z-71 pro. · March 08, 2010, 03:19:24 PM

does any one know y my 700r4 wants to slip in 3rd or 4th

Crosley.In.AZ · March 08, 2010, 08:05:27 PM

Quote from: "z-71 pro."does any one know y my 700r4 wants to slip in 3rd or 4th

if 3rd gear slips,4th gear will. it is the design of the trans.

A common problem with the 700 is the 3-4 clutch pack.

Year ,make, model of vehicle?

Mileage ?

z-71 pro. · March 08, 2010, 11:42:35 PM

its a 1990, z-71, fresh rebuild. it did it before the rebuild and after about 500mi after it did it again. then i put a valve body kit in it and no change

enjenjo · March 09, 2010, 10:24:06 AM

Quote from: "z-71 pro."its a 1990, z-71, fresh rebuild. it did it before the rebuild and after about 500mi after it did it again. then i put a valve body kit in it and no change

If the throttle valve is not set correctly, it will burn up the clutches in 500 miles or less.

z-71 pro. · March 09, 2010, 05:56:50 PM

Quote from: "enjenjo"
Quote from: "z-71 pro."its a 1990, z-71, fresh rebuild. it did it before the rebuild and after about 500mi after it did it again. then i put a valve body kit in it and no change

If the throttle valve is not set correctly, it will burn up the clutches in 500 miles or less.

it was set correctly.

enjenjo · March 09, 2010, 07:22:01 PM

Quote from: "z-71 pro."
Quote from: "enjenjo"
Quote from: "z-71 pro."its a 1990, z-71, fresh rebuild. it did it before the rebuild and after about 500mi after it did it again. then i put a valve body kit in it and no change

If the throttle valve is not set correctly, it will burn up the clutches in 500 miles or less.
it was set correctly.

Ok, no offense meant. You are going to have to look for another reason the clutch pack burned up then.

Crosley.In.AZ · March 09, 2010, 08:31:10 PM

Well, You did not fix the cause with the parts replacement.

Various items to check: pump side clearance,, clutch pack clearance, Valve bore wear in the valve body.

What kit was used in the trans?

Were all bushings replaced?

was there a pressure test done?

Converter replaced?

z-71 pro. · March 10, 2010, 12:22:21 AM

Quote from: "enjenjo"
Quote from: "z-71 pro."
Quote from: "enjenjo"
Quote from: "z-71 pro."its a 1990, z-71, fresh rebuild. it did it before the rebuild and after about 500mi after it did it again. then i put a valve body kit in it and no change

If the throttle valve is not set correctly, it will burn up the clutches in 500 miles or less.
it was set correctly.

Ok, no offense meant. You are going to have to look for another reason the clutch pack burned up then.

none taken. the clutch pack wasnt burned up when i rebuilt it though

z-71 pro. · March 10, 2010, 12:27:09 AM

Quote from: "Crosley"Well, You did not fix the cause with the parts replacement.

Various items to check: pump side clearance,, clutch pack clearance, Valve bore wear in the valve body.

What kit was used in the trans?

Were all bushings replaced?

was there a pressure test done?

Converter replaced?

all that checked, the kit was a tci trans-scat valve body kit, the heavy duty mod. i put that in because the old plate looked kinda rough. my tranny guy thought that a check ball could have got stuck.