73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: dog84chevy on January 22, 2005, 11:17:00 pm

Title: 4 speed swap to 700r4 with 208 transfercase
Post by: dog84chevy on January 22, 2005, 11:17:00 pm

I know that I need the adapter what about drivelines and crossmember mounting locations are they the same does anyone know? I have a 84 3/4 ton with 383 stroker

Title: Re: 4 speed swap to 700r4 with 208 transfercase
Post by: Snuke87chevy on January 24, 2005, 11:19:00 pm

The crossmember has to be moved.

Title: Re: 4 speed swap to 700r4 with 208 transfercase
Post by: dog84chevy on January 25, 2005, 08:34:00 pm

ANY OTHER SPECIFICS THAT I NEED TO KNOW?  CAN YOU PUT A 32 SPLINE OUTPUT SHAFT IN A 700R4. LIKE THE KIND IN A TH400.

Title: Re: 4 speed swap to 700r4 with 208 transfercase
Post by: dog84chevy on February 24, 2005, 07:22:00 pm

just to add a update to the swap.  You do not have to move the crossmember if you use the correct adapter.  I used one out of blazer and the crossmember went back into the same holes.  I do have to lengthen both drivelines but only 2 inches.  They work ok but, I get some vibration at higher speeds.  
 If you are changing out a Th400 or Sm465 with a 32spline out put shaft ADVANCE ADAPTERS makes a new 32spline shaft to work in a 700r4.$ 234.00