Malibu transmission question

[Ribbedroof]

If it was built for the US market, an 81 would have been a TH350C. Lockups in Malibu started in 1980.

 

[ssn696]

If it was built for the US market, an 81 would have been a TH350C. Lockups in Malibu started in 1980.

Ah. I wondered about that. No computer in 1980 models...used the vacuum switch setup?

 

[Ribbedroof]

Yep, thermostatic/vacuum for 1980

 

[BuickOldsPontiac]

Thank you for the trans identification chart. The trans in my Malibu is definitely a TH350.
Now will this trans hold up to my 350 Vortec?

The TH250c, unless my memory is shot, uses the same pan as the TH350 & TH350c.

 

[TURNA]

Yes but will say METRIC on the pan s well as the band adjustment screw

 

[Ratchet]

My plan is to install a Turbo 400 behind the 350 Vortec that is replacing the 267 sbc. Afterwards, I’ll look at replacing the rear end with either an 8.5, 12 bolt or 9 inch.

 

[TURNA]

TH400 u need to cut the "ears" off for it to fit

 

[Ratchet]

That is exactly what the transmission shop told me. Thanks for the reminder.
Any idea of what to do for a driveshaft ( Turbo 400 & 350 sbc)?

 

[TURNA]

u need the yoke from the 400

 

[Ratchet]

What about length?