1969 f100 has the T-18 3 speed + granny. I am looking to swap out the t-18 and do a temp replacement with a c-4/c-6 tranny while the other will be torn down and rebuilt.
The tranny will be bolted up to a 300-i6 . I am not worried about the linkages/brackets or the cooler. that is taken care of. what I need to know what do I need to do to swap out just the transmissions.
I know about about changing the the flywheel to flex plate.
I do not know if I can use the same cross member and drive shaft. This is a daily driver and I do have a good c-6 tranny here and a c-4 that I can use if i need to.
the next thing I do not know if I can use the same 2 piece drive shaft that I have.
Later on this truck will be restored to its original state.
Any help would be appreciated.
one last thing , were would be the best place to buy a rebuild kit for the t-18? new bearings, and bushings?
Tranny swap t-18 to c-4 or c-6
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Sunwings
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Tranny swap t-18 to c-4 or c-6
"Success is the ability to go from one failure to another with no loss of enthusiasm" Sir Winston Churchill.
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Whateverman
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Re: Tranny swap t-18 to c-4 or c-6
you'll need an auto trans starter, and the front half of your driveshaft shortened if you can't locate one from an automatic truck
you can use the existing trans x-member and the tranny mount
you can use the existing trans x-member and the tranny mount
- still got my first first car 20+yrs later : 69 f100 sorta kinda pretending its a Mercury M100 w/a 70 f350 sport custom cab (factory buckets) 67 grille with 69 ranger cooneyes 68 merc box and hood,some supercool fiberglass fenders i scored way back when, 76 f150 disc brake frontend..currently running a 90 5.0HO 4bbl/c4 auto & 3.50 posi...originally a 360/c6 f100 Ranger with dealer added towpack (incl. kelsey hays trailer brake),boxside toolbox,behind the seat stowage & belly tank...only original parts left on 'er are the frame,rear end,rear springs,and rear bumper...
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Sunwings
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Re: Tranny swap t-18 to c-4 or c-6
thanks for the info , this what I needed to know. 
"Success is the ability to go from one failure to another with no loss of enthusiasm" Sir Winston Churchill.
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Whateverman
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Re: Tranny swap t-18 to c-4 or c-6
-i should add that you might have to move the x-member and drill a couple of new holes in the frame,but that would be pretty obvious when you got that far along
- still got my first first car 20+yrs later : 69 f100 sorta kinda pretending its a Mercury M100 w/a 70 f350 sport custom cab (factory buckets) 67 grille with 69 ranger cooneyes 68 merc box and hood,some supercool fiberglass fenders i scored way back when, 76 f150 disc brake frontend..currently running a 90 5.0HO 4bbl/c4 auto & 3.50 posi...originally a 360/c6 f100 Ranger with dealer added towpack (incl. kelsey hays trailer brake),boxside toolbox,behind the seat stowage & belly tank...only original parts left on 'er are the frame,rear end,rear springs,and rear bumper...
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Sunwings
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- Joined: Wed Jun 27, 2012 7:55 pm
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Re: Tranny swap t-18 to c-4 or c-6
well I will not be doing that. I did decide to have a friend take out the old tranny and we found the problem were the front bearing housing was loose. it tore up the main input shaft . so now it is time for a rebuild.
"Success is the ability to go from one failure to another with no loss of enthusiasm" Sir Winston Churchill.