recommendations for drive train, transmission and transfer case

[rhinoherd]

I'm looking to put a Chev. big block in a J20 with a T18/20TC. Am seeking advice on Heavy Duty axles, transmission, transfer case, etc. Don't want to rip everything apart, but don't want to spend $1,500 per axle either. Thanks in advance for your replys.

[porkchop]

What do you use the truck for? I think that a D70 rear and D60 front is a good choice. If I could afford it I would go with these. But for the kinda wheeling I do, the D44's are just right, for now http://www.ifsja.org/ubb/biggrin.gif.

Do you already have the adapter for the engine to tranny?

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'67/'79 Wagoneer mix
“Old Timer”
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Mods, Mods, and more Mods! The end is no where in site, but I am sure I am closer to the fork in the road.

[River Beast]

Good choice Porkchop... must agree... now. behind that BB Chevy....hmmm... well... if it were mine http://www.ifsja.org/ubb/biggrin.gif... I would go with a TH400/NP205....

Inside joke on this one. http://www.ifsja.org/ubb/wink.gif.... I'm lookin' for the same tranny/T-case combo to withstand my abuse of my 39's...

Very wise choice to get this combo... can be found in 71-84 3/4 ton model GM's.


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Todd
78 Wagoneer, "River Beast"
360/TH400/QT (maybe changin' QT soon to a Dana 18/20)
Dana 44's locked w/ 4.89's
39.50x15x15 Super Swamper TSL's on 15x12 Eagle 589's
7" SOA in front-7" Rear Shackle Inversion Mods
4" Skyjacker Softride
3" Trailmaster Bodylift
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'93 3/4 ton 4x4 Suburban...a.k.a. "FSJ Hauler"

[scotty]

sorry,but i just dont see any logical reason to adapt a BBC toa t18/d20.

i would use an sm420,or an sm465 with a 205 xfer. either are prolly alittle stronger than the t18,the 205 is defiantely stronger than a 20,and no wierd adapters. just make mounts and figure out the linkages,which shouldnt be too hard,just put the engine in about the same spot,both trannies use a mechanical linkage.

what gears do you need? PC is right-for that kind of torque,youll need a dana 70 or corporate 14 bolt,unless you need in excess of 5.13 gears. in that case you need a custom 60 wit upgraded shafts,and then you can get down to 7.17.

a 60 in the front is also mandatory,again with upgraded shafts,and you might consider then new warn "fusible" hubs.

i think youll break stock 60s unless you baby it,in which case you prolly wouldnt be bthering to put a big block in ther n the first place-so well assume youre gonna give it some heck.youll definately break 44s like nothing.

good luck with your project...

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scott
85 grand wagoneer
258 with motorcraft 2bbl/904/twin stick dana 300/dana 44/welded amc 20
38x15.5 gumbo mudders
snorkel/dual batteries/onboard air/"custom" convertable
3 inch body lift/mostly stock suspension/"modified" fender openings
custom front/rear bumpers and brushgaurd

T18/dana-spicer 18 with drum E brake and PTO,and offset dana 44 swap very soon
BIG tow truck PTO winch and full roll cage install shortly thereafter
searching for jeep 4.0 six engine

now we can do some 'wheelin!