If it's a BDS kit, they should know what you're going to need. Super quick punch list in addition to BDS springs: brake lines, steering (can-o-worms), u-bolts. If you're going to do tires and wheels, then gears and lockers should also be considered. Drivelines are probably going to be yes. You really need to talk to someone who's done this to save yourself from reinventing the wheel. It's been done 1000's of times. Just need to find a company that knows what you're doing and buy the parts from them.
As I remember the rear drive shaft on those with T-18 four speed are pretty short. The 3 speed driveshaft has decent length (for a CJ-5). Depending on length and angles at U joints, a 4" lift may make a CV double cardan shaft necessary.
I just installed a 4" Pro Comp lift on my '77. Definitely need a new rear drive line. I swapped to a Dana 44 and even though I clocked the diff I plan on running a double cardan joint. I am going to see if I can reuse my front drive line . I also replaced all of the steering linkage wear items. You will need new flex brake lines from the frame to the front calipers and the one in the back from the frame to the rear axle. If yours is like mine was, plan on replacing some of the hard lines as well. Today I am going to extend my drop links on the sway bar and add disconnects. Also, buy or rent a pitman arm puller as you won't get yours off without one. Presoak all nuts and bolts several days ahead of tear down.
Driveshaft length is not a problem with the short length, even with a T-18, just talk to Tom Woods Drivetrain. As for the steering just do the research on how to properly set it up and you will be fine. Dont panic!
1979- CJ5- SOA, 304, T18,D20, D30,Model 20 with trac loc/moser axles both 4:56 geared and 35 TSL swampers.
1978- CJ5-SOA,9:1 360/340HP, T18A,D20, D30 and M20 w/4:56 geared.
1979- CJ5 SOA 360, T-18/D20, 4:88 gears,36 Swampers.
welcome fellow cj5er..... many options out there and write ups.... best to ask the manufacturer and rely on many whom have done it.
1992 YJ 4.0 Built Auto SOA 35's 4.56's 8.8 Rear w/Detroit Locker & A Lot More $
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