Overdrive Transmission Replacement
Q: I have a question about a transmission. Is it possible to take out a 1973 four speed transmission and replace it with a transmission with overdrive? Other than an electrical connections of course.
A: The simple answer is YES!! The drive shaft is the same length. The gearbox mounts are the same. The reverse light wiring (Green and Green/Brown) is the same. You can move your seat belt warning switch from one remote control housing to the other (if you wanted to – most wouldn’t bother).
The BIGGY here is to test the 3-4 lockout switch TWENTY times to ensure it goes continuous in 3 and 4 (or, if it’s a later gearbox (sidefill) maybe just 4th).
Change the front and rear seals and ALL the O rings before you install it.
Hope this helps!
John H Twist
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