The Stovebolt Site Forums The Parking Lot '73-'87 Trucks -- "The Rounded Line" Proper support for NP203?

I’m putting together a 4x4 from parts I already have. 400 sbc th350 with np203 transfer case. All bolted into a 87 blazer frame.
I know the transfer case needs some type of additional support besides the cross member that holds the adapter to the th350.
I’m thinking of building a support of the passengers side. Using the two bolt holes in the case for the mount.and using bushings to some sort of frame mount.I been looking on line for ideas with no luck. Trying not to re invent the wheel. Any input is appreciated.

Some folks don't use the side mounts. Your idea is correct, use the exisiting side mount holes. Fab a bracket over to the frame. Fairly simple standard fab effort.
The general procedure is mount it all up and bolt Tcase to crossmember. To design a side bracket: Use angle, plate, rectangular tubing or what you think is best. Bolt one piece to the Tcase, the other to the frame. Bolt or tack weld them togeter. Take to bench and perfect the design. (or make a cardboard model). A gusset or two will be good to add. Try to copy an original bracket somewhat.

Send pics of components in place and/or drawing of your ideas if you want critique.

You already know this but a NP205 is the "coupe de gas". 1980 was last year for 205 with automatic. IIRC.


Does this mean "was" or "is" ??.......... "All bolted into a 87 blazer frame."

What are you building?

Thanks for the reply. What you described is what I was planing to do. It’s almost all bolted together with a 53 GMC two ton body. One ton axels. 33” tires fit in the front fenders without blocking up the body on the frame. Next is brake and fuel lines.

I used a 85 suburban drivetrain in my 65, I would have to look again but I used the trans stock cross member from the suburban. There is a brace from the transfer case to the bellhousing bolted thru to the engine block. It is how it was from the factory, seems to work.