need help idenifying transmission

[loominghawk]

i have a 1989 chevy blazer 1500 with a 350 5.7L v8. my transmission has a square pan with 16 bolts. on the driver side it has the shift linkage and a 4 pin power line. and it has the number 7 stamped into it. on the passenger side it has the speedometer cable 2 coolant lines the dipstick and a hard tube that looks to connect to the top of the motor to a piston that gets compacted when the throttle is pressed. it also has a number 7 stamped into the side. the bell housing has a lower half that is bolt on. i don't have a camera to take pictures of it. i am betting that its not a 350 trans and that its probably not a regular 700r4 it might be a 700r4e but i don't know enough to know the difference.

 

[89Suburban]

See if this helps at all.

http://www.gmsquarebody.com/forum/showthread.php?t=1865

I am trying to find posts about the shapes and what trans are what shapes. We got to dig that up and make a sticky.

 

[RetroC10Sport]

http://www.700r4l60e.com/transmission_gm.html

 

[Swims350]

700r4 being square pan and being 89 it's a 700r4.

anything newer and they turned into the 4l60 and 4l60e

 

[RetroC10Sport]

700r4 being square pan and being 89 it's a 700r4.

anything newer and they turned into the 4l60 and 4l60e

4L60=700r4.

 

[loominghawk]

found vin number on trans 3t8070h so im guessing its a 1983 700r4 in which case its not the original transmission. or am i reading the vin wrong its its actually a 1993 trans.

 

[89Suburban]

found vin number on trans 3t8070h so im guessing its a 1983 700r4 in which case its not the original transmission. or am i reading the vin wrong its its actually a 1993 trans.

Yah, something don't look right there comparing to the ID chart.

 

[kleedus]

here is the pan i.d. info

 

[Swims350]

they had 700 in 83 so why would it be wrong?

I thought the 4l60 was the later version/name of the 700 and knew tons said it's the same, but thought it was like how the 4l80 took over the th400.

my bad.