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4 speed conversion Anyone use a Pinto/ Mustang II 4spd on their Model A?(Borg Warner SR4) I believe it bolts up like the T5? Thanks
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Re: 4 speed conversion What's the advantage with no OD.
Bob |
Re: 4 speed conversion Two extra gears , fill that hole between 2nd and 3rd. I'm no speed freak.
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Re: 4 speed conversion If you actually have one of the mustang SR4 trannys it has an extremely long tailshaft and far rearward shift location. After making an open drive conversion of the differential you will end up with a driveshaft only about two feet long. That will create severe angularity problems as the rear axle travels with the spring. You also may want to sit in the rear seat, as the shift lever will come up behind the center cross-member.
If you use the jeep 4wd version you will need to machine your own adapter, either for a universal to fit your open drive conversion or a torque tube adapter with a shortened torque tube and drive shaft. A lot of work for little gain to get just that one in between gear. Try a 3:54 rear gear with a Mitchell ordered with the 15% higher 2nd. Less pain, more gain. You will have still have only three ratios, but they will be more suitable to today's driving. |
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Re: 4 speed conversion Thanks guys, I've heard of the Mitchell Transmission, sounds like the cleanest solution. Who sells them?
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Re: 4 speed conversion I'm not a speed guy either, but would like overdrive or at least the 3.27 ring and pinion to slow the engine at 45 to 50 MPH.
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Re: 4 speed conversion I have the F150 transmission. When doing a parade, I like the standard low first gear. When cruising, I like the all syncro with overdrive. Ron W
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Re: 4 speed conversion Ron, did you do the machining or buy a kit for the F150 trans
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I bought a complete bolt in kit. No cutting/alterations to the vehicle. |
Re: 4 speed conversion I did my own. Having my own machine shop, I enjoyed the project and did one for a friend. Lots of dimensions to figure out to avoid cutting the frame. Ron W
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Re: 4 speed conversion I've had them all, Ryan, Borg Warner electric 6 volt, F150 4speed synchro., Mitchell gear splitter as posted. If you want possibly the easiest installation, the Mitchell is well tested and pretty popular but uses stock A tranny. Comes with solid shift linkage or cable as desired and speedo mating. Mitchell is in Santa Rosa area, Ca. Drop the entire rear end and spring together as a unit and insert the Mitchell set up, though setting the pinion bearings preload can take some practice.
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Re: 4 speed conversion Ok, Mitchell also rebuilds stock 3 speeds with syncros and improved gear ratios.
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Re: 4 speed conversion "Drop the entire rear end and spring together as a unit and insert the Mitchell set up, though setting the pinion bearings preload can take some practice."
Resetting the pinion bearing pre-load is not necessary if the adjustment nuts on the pinion/bearing assembly are not disturbed. Oviously, if the adjustment is not correct adjustment should be done. |
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Re: 4 speed conversion Mitchell Mg
Colusa. Ca Family owned business Sue Mitchell....the Mom is sales lady Steve the son runs the plant Quality products Gil. NoCal |
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I am using a T-5 from an S-10 4x4 with a torque tube adapter. My project is more HAMB friendly than here but the idea is the same.
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Re: 4 speed conversion Binger, who did the machine work? Used a AA bellhousing? Looks great by the way.
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