1957 Transmission swap

[1953CE]

I am considering a swap from a M-20 to a powerglide or TH 350
My 57 has a 67 Chevelle 283 with a Muncie 4 speed.
Will the flywheel have to be changed?
Anyone have a PG or TH they might like to swap?

[c4c5specialist]

HI there,

#1, yes, I would always replace the flywheel anyway due to age.

#2, remember you may have to shorten the propeller shaft in between the tailshaft of the transmission and the yoke of the differential.

I will have to dig in my archives tomorrow AM to confirm my suspicions.

And make sure that the transmission cooler is more than adequate as the TH350 does generate a little more heat.

Allthebest, Paul

[c4c5specialist]

HI there,

After some major digging, a few things I found out.

#1, yes, obtain a flexplate and they are readily available.

#2, the research on the driveshaft/propeller shaft shows me that it is all the same from transmission to the differential. P/N was 3712381 from 55-62 with no breakdown or specific changes between the manual transmission and automatic transmission.

Allthebest, Paul

[1953CE]

Thank you Paul,
I appreciate your research.
When I pursue the swap I'll let you know if I find a PG or a TH
Bob