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Unread 02-11-2013, 07:26 PM   #1
SC409
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1993 YJ Wrangler 
 
Join Date: Oct 2012
Location: Galena, Missouri
Posts: 8
YJ drivetrain swap

Heres what im thinking. Sbc with T18 tranny 205 transfer case dana44 hp and 9 inch from f150 with 3.50 gears with 33s. Anyone doing or has done this? What would the highway speeds be like. Dont need much maybe 55mph

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Unread 02-11-2013, 07:32 PM   #2
Joe Dillard
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1991 YJ Wrangler 
 
Join Date: May 2004
Location: King George, VA
Posts: 12,323
You may want to checkout some gear ratio calculators. They will give you a good idea as to the final gear ratio according to tranny, tcase and axle ratio.

This one won't help you much - but gives you an idea what I'm talking about.

http://www.manoian.net/jeep/gear_ratio_calculator.html
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Unread 02-11-2013, 07:37 PM   #3
YJ4LIFE
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1989 YJ Wrangler 
 
Join Date: Dec 2011
Location: , San Angeles
Posts: 713
why a 4 speed?
205? why not a d300?
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'89 YJ, 4.2L, ax-15, B&M shifter, 1" BL, TJ flares, '99 intake, '91 EFI, 5.0L explorer injectors, GenRight tank & stretch, 35" ProComp Xtreme muds, 52" chevy springs rear, 44044 Ranchos front.....
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Unread 02-11-2013, 07:53 PM   #4
SC409
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1993 YJ Wrangler 
 
Join Date: Oct 2012
Location: Galena, Missouri
Posts: 8
I have the 4 speed and transfer case. Running a 4 cylinder with ax15. Dont want to buy the adapter to the small block
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Unread 02-11-2013, 09:58 PM   #5
rd94yj
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1994 YJ Wrangler 
 
Join Date: Mar 2007
Location: Bham, Alabama
Posts: 202
I take it you have done your rresearch on input shafts for the t18?
I do have to ask about the transfer case choice though? trade it for a dana 20 or 300. Save space and weight.

Im in the process of building my t18 and dana 20 to bolt up to my 4.0
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Unread 02-12-2013, 01:00 AM   #6
SC409
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1993 YJ Wrangler 
 
Join Date: Oct 2012
Location: Galena, Missouri
Posts: 8
My initial post was wrong. The tranny is a NP439. The 205 is bolted up to the 439. Im going to run it behind a small block 350. I have a lot of hills on the highway and im looking to make a hill climber for hunting and pulling my boat and back and forth to work.
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