mark opa

I will check the car code and date this weekend, and post what I find. I will also reach out George Asche. Thanks for all the help and if anyone else has any advice, I'm all ears.

Thanks for the responses. I should have stated that I pulled the engine & gyromatic out of the 1951 dodge, and am replacing it with the Plymouth engine (the dodge was locked up solid) and the R7 is mated up with a std 3spd column shift. The input shaft is a good fit from preliminary measurements and a trial fit to the engine. I'm changing out the shifting column as the dodge column shifter is for the gryomatic and does not have functionality required to shift the std 3 speed. I was looking for the correct procedure to test the solenoid, and a source for possible replacement parts I listed above, as the tranny - O/D unit I purchased had long been removed from the donor car. Thanks again.

I recently purchased a B/W R7 overdrive tranny from a local junk yard. I am looking to install it onto a 213 L6 destined for my 51 Dodge Coronet. How can I verify that it functions correctly prior to installing? The gears move as designed, my concern is the solenoid. Is there a place I can source solenoid - relays - kickdowns - governor? I have reached out to Randy Rundle at 5th Ave. but his are only for R10 & R11's. Any help would be greatly appreciated.

Looks like a 3.7 is the clear choice. This forum is a great resource for a novice such as myself. Thanks to all that replied!

Thanks so much for the info. Sound like the rear axle is the key to achieve lower rpms at higher speed. I have seen that the B-Body rear axles from 1962 to 1970 match the 35 Plymouth well and some have a 2.76 to 1 ratio. That rear axle mated with a standard 3 speed might achieve what I am looking for.

Thanks for the quick reply and information. Are there any other engines than the L6 that the M6 can mate up to?

1st time member asking a probably stupid question, but can you use an M6 tranny in a 1935 plymouth? Looking to get better top end speed w/o going to a T5 or other tranny.