Possibly Dumb C6/Driveshaft Question
#1
Possibly Dumb C6/Driveshaft Question
I recently picked up a 1968 F100, 390 auto with C6, 2WD LWB.
The transmission is bad and I am trying to get it back on the road ASAP.
My problem is that the local wreckers tell me the working F100 transmissions they have are different than mine despite being in the 68-72 period.
The issue is that my transmission has a flange instead of a yoke. (pic below)
If I buy a transmission from a 1971 that has a different yoke on the tail shaft, could I simply buy the half of the driveshaft that would work since my driveshaft is two pieces?
Or would I be required to modify what I have?
Any help would be appreciated. I am new to Ford trucks and trucks in general.
The transmission is bad and I am trying to get it back on the road ASAP.
My problem is that the local wreckers tell me the working F100 transmissions they have are different than mine despite being in the 68-72 period.
The issue is that my transmission has a flange instead of a yoke. (pic below)
If I buy a transmission from a 1971 that has a different yoke on the tail shaft, could I simply buy the half of the driveshaft that would work since my driveshaft is two pieces?
Or would I be required to modify what I have?
Any help would be appreciated. I am new to Ford trucks and trucks in general.
#2
#4
#6
Anytime, good luck ! The transmission mount should be the same as what you have now. You might have to move the crossmember, but that's an easy mod, just slide it and redrill the frame holes. I have a LWB E150 van, I can measure the driveshaft on it to see where you're at there.
#7
Anytime, good luck ! The transmission mount should be the same as what you have now. You might have to move the crossmember, but that's an easy mod, just slide it and redrill the frame holes. I have a LWB E150 van, I can measure the driveshaft on it to see where you're at there.
Too many modifications/complications otherwise.
Your input is very appreciated.
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#8
The mainshaft won't swap. yours is quite a bit shorter and is threaded for the retainer nut. Might be easier to just have yours rebuilt.
#9
Is that not an option?
#10
I don't know, I've never rebuilt a C6. I just know the mainshafts or is it the tailshaft ? Are different lengths and one is splined the other threaded.
#11
According to one guy who claims to have done the swap, the flanged tail shaft will come off as a unit. I will test that soon and report back.
#12
I think that's the tail shaft and you are correct. The flanged one is allegedly held on with a snap ring (part 7070) and the nut (351165-S) while the slip yoke is held on with a snap ring and something else.
According to one guy who claims to have done the swap, the flanged tail shaft will come off as a unit. I will test that soon and report back.
According to one guy who claims to have done the swap, the flanged tail shaft will come off as a unit. I will test that soon and report back.
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