TradModelA
Member
Anyone use a Pinto/ Mustang II 4spd on their Model A?(Borg Warner SR4) I believe it bolts up like the T5? Thanks
4 speed conversion
- Thread starter TradModelA
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TradModelA
Member
Two extra gears , fill that hole between 2nd and 3rd. I'm no speed freak.
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hardtimes
Well-known member
My help/suggestion
, would be to go over to HAMB. When there, click onto TRADITIONAL and ask your question. Very helpful area and guys who do this traditional hot rod mod thing ...with much experience/knowledge.
MikeK
Well-known member
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.
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.
BRENT in 10-uh-C
Well-known member
Although you did not ask for my opinion, my 2 cents is the recommendation that you correct the root problem. Instead of doing a transmission conversion, look at using a hi-compression head and a Stipe IB330 camshaft. With those two, you won't feel a 'hole' between those two gears. Total cost should be under $1k.
TradModelA
Member
Thanks guys, I've heard of the Mitchell Transmission, sounds like the cleanest solution. Who sells them?
CarlG
Well-known member
Mitchell
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Tom Wesenberg
Well-known member
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.
TradModelA
Member
Ron, did you do the machining or buy a kit for the F150 trans
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CarlG
Well-known member
Ditto what Ron said
I bought a complete bolt in kit. No cutting/alterations to the vehicle.
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 ******. 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.
TradModelA
Member
Ok, Mitchell also rebuilds stock 3 speeds with syncros and improved gear ratios.
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MAG
Well-known member
"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.
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.
Manager
Senior Member
Yeah I have been through what you are in my head for a while now and this is the easiest option. Just from memory about $2200 probably the cheapest as well. F150 looks to be a better option than the C10 box if you go the next step, from my research anyway. And from there you can play with Volvo boxes and all sorts of things but you would need to be fairly capable and have your own machine shop I reckon.
Gil Sissons
Senior Member
Mitchell Mg
Colusa. Ca
Family owned business
Sue Mitchell....the Mom is sales lady
Steve the son runs the plant
Quality products
Gil. NoCal
Colusa. Ca
Family owned business
Sue Mitchell....the Mom is sales lady
Steve the son runs the plant
Quality products
Gil. NoCal
TradModelA
Member
Binger, who did the machine work? Used a AA bellhousing? Looks great by the way.
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