[Zoomie5.0]

Well I'm looking for guidance on a transmission for my 71 mach 1. It has a mildly rebuilt 351c and currently has a 3 speed toploader that's connected by a 9" clutch on a 164 tooth flywheel.

Therefore, I'd like to know if there's a list of "easy" transmission swaps that can be done. I suppose a 4 speed toploader would be the most "period-correct" but it is more of a resto-mod, so a T5 or similar would be preferable. I just can't seem to find the information I need as to whether the shifter location would be about the same, and if the current driveshaft would be the correct length to use with a T5. I have similar questions about the transmission crossmember lining up with the mount bolt holes on a T5.

The rear-end gear is currently unknown (working on getting all the data to guesstimate it), it's a 9" housing thats been torn apart and rebuilt by the previous owner, so any tags that were there are gone.

One other requirement for a new transmission would be a similar input shaft (1 1/16 10 spline, if memory serves) and it would bolt up to the bellhousing.

Thanks for any input or data anyone has!

[J. Rhapsody]

You could use a t5. Theres also that 5speed that was used in the trucks and stepvans(ups,300ci).

[andrewmp6]

Talk to Modern Driveline - T5 / TREMEC TKO Transmission Conversion - 5 speed & 6 speed solutions to swap your Ford Mustang, Falcon, Cobra, Hotrod into Overdrive! Performance Parts he can build you a kit with or with out the tranny.Yeah your best bet is a t5 if you want a older looking shifter for it Reenmachine :: Shifter Handles :: Reenmachine Billet Aluminum T-5/T-45/TKO Shifter Handle - The website for reenmachine Incorporated, builders of exotic custom vintage Ford Mustangs with a high-tech hot rod influence. Also: reenmachine, reen, mustang

[Zoomie5.0]

Thanks for the info on ModernDriveline. Seems like their FAQs had a lot of the answers I was looking for.