Could an m20 have been replaced with an over the counter m-22 in late 68?
Yes. It was an option in 1968, so it was available.
It was an option for L78 & Z28.
Quote from: DMiller307 on June 13, 2024, 07:58:22 PM
Could an m20 have been replaced with an over the counter m-22 in late 68?
Yes.
Hmmm. Not service replaced over the counter on a 350 l48?
Very doubtful unless someone knew someone that knew someone.
Yes it is possible. Either a warranty replacement or a parts department over the counter purchase.
They would have a "CT" stamping.
A failure under warranty requiring replacement would be serviced with another M20.
Motor Trend article on Muncie transmission date codes:
https://www.motortrend.com/how-to/1607-how-to-identify-a-muncie-four-speed-build-date-codes-vins-and-input-shaft/
Service replacement under warranty is a completely different thing than buying a transmission outright over the counter.