700R4 and a NP205 in a 78 K10

[Ziptar]

I looked at 78 K10 with a slipping tranny and a bad transfer case this week. Near as I can tell from looking stuff up it's got a TH350 and a NP203 (Full Time, Chain Driven) in it.

If I bought it I'd like a 700R4 and a NP205 (Part Time, Gear Driven) in it.

Whats it take to swap them in? Just repositioning the mounts and drilling new holes? Do the drive shafts bolt up? or would I need the drive shafts for a NP 205? and do those bolt up to the axles? 78 is going to be 12 bolt rear for sure.

Can I or should I use the later auto hubs if I go to an NP205?

1979 Silverado C10 w/ Olds 5.7 Diesel Looking for a Solid / Decent 78-79 truck to donate it's  drivetrain to.

[Ziptar]

Took a bunch more searching but found really good info on this board.
67-72chevytrucks.com/vboa...p?t=128495
67-72chevytrucks.com/vboa...p?t=126262
67-72chevytrucks.com/vboa...p?t=145433

Also found a thread on ck5forums

Quote:for the love of pete, i wish someone would make this tech a sticky... someone asks about it every other day and I have to go back and search to find the same answer over and over. sigh. anyway... the easiest way to do it is to get a factory th350-to-np205 adapter, the 27 spline 205 to go with it, and a spacer from...

A Reds Transmission Parts
2501 E Truman Road
Kansas City, MO 64127
(816) 483-7337

The part # 7Q35A and it sells for around $50.00.

pull your existing tcase and adapter, trim about 1/8" off the end of the 700r4's output shaft and from there its all bolt-up.

That was exactly what i was hoping to find!!

1979 Silverado C10 w/ Olds 5.7 Diesel Looking for a Solid / Decent 78-79 truck to donate it's  drivetrain to.