TipTricky

Going to pick n pull on thursday to get a transmission to put in my 91 z28 tpi so i can drive the car while waiting to rebuild the tranny in the car but im not sure what cars, trucks, vans, or suvs i should look at for the tranny. I know camaros, firebirds and astro vans have the 700r4 but what do you guys recommend pulling it from?

Barlow8869

iTrader: (1)

there are a ton of things out there with a 700r4, (to many to list)they were even in trucks,(the 4wd may not be the same, but all others are) so just ask them, and try to pull one from a crashed one, at least you know why it is in the scrap yard ... if you are lucky, you can get one out of a crashed vette ( think they changet all cars and trucks over to the 4L60 and 4L60e somewhere in the early 90's, but not sure what year for sure)

Barlow8869

iTrader: (1)

found this at boxwrench.net ... The 700R4 transmission was used in GM cars and light trucks with the 2.8, 3.1, 4.3, V6 motors and chevy built 305 and 350 small block V8 engines up until 1993, before becoming the 4L60E. It was offered in 2WD and 4WD versions.
It was first used in 1981 for Chevy and GMC cars and trucks and made from cast aluminum weighing about 155 pounds. By 1990 it was renamed the 4L60 and by 1992 it became electronically controlled with a Vehicle Speed Sensor (VSS) and was renamed the 4L60E

InfernalVortex

iTrader: (4)

Wouldnt you have to pull one from an F-body to be able to use the torque arm mount?

TipTricky

I pulled the a tranny from a 91 camaro with the 3.1 and it has a completely different bell housing on it but everything else looks identical

Barlow8869

iTrader: (1)

don't the torque arm mounts bolt on?
EDIT: it does seem to be that there are 3 tailshafts for the 700r4, so unless you want to use a couple of clamps to hold it for a short time, you may have to get one from a 3rd gen f-body, or just pull your tailshaft off and put it on the one you are going to pickup (tell the shop not to put the new seal in the shaft you send them, so you have a new one when you swap it back) ... thank you InfernalVortex for correcting that

Barlow8869

iTrader: (1)

yes, for a v8, it will need to be from a v8 or a 4.3L

TipTricky

Haha that would have saved me the second trip

TipTricky

So i pulled the tranny from a 89 Chevy Silverado and ran into a problem. When changing the tail shaft i noticed the VSS is different the one on the tail shaft from the camaro is gear driven the one on the tail shaft from the truck is a magnet style...

From the truck



From my camaro



Both plugs look like this

Blue1990camaro

iTrader: (1)

yup electric spedo vs cable driven or has an external sensor on yours. have to change that shaft over if possible im not sure how to though

TipTricky

Both sensors are electric plugs

jmd

iTrader: (4)

Four.
Y Vette (vertical bolt mounting for driveline bracket arm)
C/K truck (smooth)
F (torque arm)
B/D-body (200-4R / TH400 location mount boss)

Barlow8869

iTrader: (1)

if it is like a th350, you have to pull the shaft out the front ... if you just need it for a short time while you have one rebuilt, i would just drive it without the soeedo