W-200, 4 Speed To 727 Conversion?

dashshifter · Post by **dashshifter** » Sun Jul 09, 2006 11:45 pm

I have leads on W-200's with 4 speeds but I want an auto. Is this do-able? The bolting it to the block seems pretty straight forward. The shifter and kickdown linkage I can handle. Am I missing something? What problems will show themselves? Steve

Post by **Hobcobble** » Mon Jul 10, 2006 8:57 am

For '68 and earlier W's, you'll have to remove the
bellhousing crossmember and locate the proper auto
tranny crossmember, the correct short tailshaft 727,
corresponding driveshafts, yokes, etc.. You'll need
to cool the tranny with the proper radiator and
external cooler also. There are bolt-in spanners that
run between the cut bellhousing crossmember. If you
can't locate originals, you can fabricate them
pretty easily. For '69-'71 trucks, you'd have to
locate the proper short tailshaft tranny, radiator
and external cooler. I'm sure someone will chime in
here with regards to the tranny crossmember and any
differences you'll encounter with it for manual vs.
auto tranny trucks.
John

soopernaut · Post by **soopernaut** » Mon Jul 10, 2006 10:22 am

Why not look for a 70-71 truck with a 727 already in it?

Post by **cowboy** » Mon Jul 10, 2006 8:29 pm

Steven , John has said it wright , What yr truck are you looking at ? if the 69-71 your in good shape as far as the cross member & rubber mount go'es , if 68 & older follow john's advice

digdoug · Post by **digdoug** » Tue Jul 11, 2006 12:02 am

John is dead on with what is needed.
Autos make for less fatigue and maintainance,but the trade offs are heat and 10-20% worse gas milage.

MOPAT · Post by **MOPAT** » Tue Jul 11, 2006 4:07 pm

the cobbler has it down........That is what I had to do my w200 to make it a 383/727. I had a 68 d200 camper special to steal parts off of to make it easier.
Pat

dashshifter · Post by **dashshifter** » Wed Jul 12, 2006 10:59 am

I see there are options after all. Thanks guys.