Ford Cummins tranny and transfer case issue
 

well i ran into a bit of a snag in my cummmins powered 1978 Ford Bronco project.
i originally planned to use the dodge a 518 auto and a np 241 transfercase but have it mocked together and with the length of the slip yoke and the fact that i will have to figure out speedo and a few other issues i am thinking of going to an adaptor and a ford tranny and transfercase.
i have looked into a slip yoke eliminator but apartently they don't make them for the np 241hd.
i have found a adaptor for a small block ford manual, it comes with a new clutch, starter and flywheel for $700 which seems like a good deal to me, remember i am in Canada.
how well do the small block trannys hold up to cummins power?
i am not going crazy but am shooting for about 300-350 hp.
any help would be greatly appreciated.

a np453 4 speed is pretty strong. i wheel with on in my 6.9 and never had a problem. just sometime wish it was a 5 speed.

i would suggest a np435. it is what came in your 78 bronco if it was stick.


the t19 is also a good one, i dont belive it is as strong, since i broke one in my 6.9(snapped tailshaft in half and cracked case in 4 peices)

all ford truck trans with the 4 bolt h pattern have same bolt pattern, same spline count and input length.

hell u could even put a 3 speed on the tree in it. lol

i actually really want a 5 spd.
overdrive is a good thing.
i have been leaning toward the zf5, but would like to hear from someone who has used one behind a cummins and had it live.

blazers came stock with a 700r4 to a np241 stock for 88 to 91 and a 518 is only a 1/2 inch longer then a 700r4 u shouldnt be having a problem with it being to long :tu:

that depends on if its an overdrive 518 or not. if its an OD unit you can add another like 16 inches to the length of it. a non OD is pretty short, but the OD adds a decent amount of length

it is a overdrive a 518 and only gives me about a 16 inch driveshaft and it still has the slip yoke.
i was doing some measurements and using a ZF and a 205 wll be over 12 inches shorter and no slip yoke.

you could make a 16" driveline work with dual custom cv's on each end but itd be expensive

i know it could be done, i just don't really want to do it unless i have to, plus i really don't want a slip yoke.
that isn't the only issue with running the dodge stuff, i just think the ford route will be easier

you can get a slip yoke elimator for the rear that way it runs a flange. theyre pretty cheap and easy to come by. if you already have all the dodge stuff id just use it its be alot easier and cheaper to make a driveline work than to gave to buy a tranny adapter, starter, trans, transfer and then you still have a driveline to get made.

that is where i am at right now, i don't have the pieces yet, i just have mock up pieces.
i looked into a slip yoke eliminator and couldn't find one for a 241hd only the 241.
i made a deal with the guy for the Ford 5 spd adaptor which will probably save me a bunch of money and trouble as long as the stuff holds up ok.:humm:
i guess i will find out!!!