Jacob Ochs Posted January 16, 2015 Posted January 16, 2015 For starters here's my build specs 1986 Jeep Comanche 2.8 AX-5 tranny with the 207 TC Dana 30 front 4.10 Ford 8.8 rear 4.10 trussed 6-7 inches of lift 33x12.50r15 BFG's AT on Mickey Thompson 15" "bead locked" rims. The 2.8 will soon be swapped out for a 3.4 furl injected Camaro engine with some custom mods hopefully to be a 200hp engine all said and done... My question is will a Dana 30 with stock shafts and 4.10 gears trusses be enough to handle my build? After Recruit training I would like to take my MJ out more and use it as a sort of trail/Pre-runner Vehicle (nothing crazy) Also any other upgrades you would like to list that would be good for me let me know I would like to get all the knowledge I can! My next future upgrades if you can call it one is a body work and paint job, front Y links, limiting straps, fox 2.0 shocks/ struts, and one day maybe even a coil converted rear not sure how that would benefit me! So anything you wanna throw in tell me!:)
Minuit Posted January 16, 2015 Posted January 16, 2015 People run similar builds with the 4.0 (which has similar output to your hypothetical 3.4) all the time. I don't see any reason why not. I would be far more concerned with the AX-5.
Dillithium Posted January 16, 2015 Posted January 16, 2015 You using the CAD dana 30? If so, you could upgrade to 97+ axle shafts for the larger U joints.
Jacob Ochs Posted January 16, 2015 Author Posted January 16, 2015 People run similar builds with the 4.0 (which has similar output to your hypothetical 3.4) all the time. I don't see any reason why not. I would be far more concerned with the AX-5. thanks for the input, I've heard mixed things of the AX-5 but if it becomes a problem I will get an AX-15 and bolt it up with a Dakota bell housing!
Jacob Ochs Posted January 16, 2015 Author Posted January 16, 2015 You using the CAD dana 30? If so, you could upgrade to 97+ axle shafts for the larger U joints.Is the stock D30 in 1986 CAD? If so then yes I do! Are the 97+ shafts different splinned?
Minuit Posted January 16, 2015 Posted January 16, 2015 If you see a box on the back of the passenger side axle tube (i.e the tube isn't circular from the diff to the passenger side wheel) with some vacuum lines coming out of it then yes, it's a CAD axle.
Jacob Ochs Posted January 16, 2015 Author Posted January 16, 2015 If you see a box on the back of the passenger side axle tube (i.e the tube isn't circular from the diff to the passenger side wheel) then yes, it's a CAD axle. yep, I have that then! I replaced it a few months back! It has a fork and ring around the shafts in there!
MuddFoot Posted January 16, 2015 Posted January 16, 2015 on my xj i ran the dana 30 with 4.56 with a spartan locker with chromemoly axle shafts and never had any issues.
dasbulliwagen Posted January 16, 2015 Posted January 16, 2015 There are sleeve kits available to strengthen the 30 as well, but they don't really apply to the cad axle. There was a non cad axle available in 86. It came with the xj's and MJ's that had the NP228 full time 4 wheel drive option. Not that you have to have an 86 axle. But the upgrade 1 peice shafts mentioned can be made to work in the cad axles with special axle seals.
Jacob Ochs Posted January 16, 2015 Author Posted January 16, 2015 There are sleeve kits available to strengthen the 30 as well, but they don't really apply to the cad axle. There was a non cad axle available in 86. It came with the xj's and MJ's that had the NP228 full time 4 wheel drive option. Not that you have to have an 86 axle. But the upgrade 1 peice shafts mentioned can be made to work in the cad axles with special axle seals. okay thank you! Also do you think a full time 4wd TC would be a good upgrade?
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