350 to 700r4 in truck originally 305/700r4 equipped

[erikgto]

Hi guys,

I just got my '82 Blazer that was originally a 305/700r4 3.08 equipped truck.
During the '90's this combo was replaced with a rebuild '70's 350/350 drivetrain.

I've found a 700r4 for sale out of an '87 G20 van.
What do i need to do and get to swap that 700r4 in my blazer, besides shorting my driveshaft.
Is my Blazer already equipped with the lock up or do i need a new kit?
Do I have to worry about my speedometer connecting to the tranny.

Anything else?

Any input is appreciated!

[cableguy0]

First thing to do is measure the tail shaft length on the th350. If its a 9 inch tail shaft everything is a direct swap. No changes will be needed.Speedo should hook up. I dont think they used the electronic speedo in 87.

[gchemist]

Swap info: http://transmissioncenter.net/700R4_Swap_Info.htm

I ditched all the vacuum and electrical lockup stuff. I run a 2500 stall instead.

Here is a list of stock parts needed to wire up a lockup.
http://www.73-87.com/7387garage/drivetrain/lockup.htm