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02-16-2006, 12:21 PM
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New Member
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Join Date: Feb 15, 2006
Location: Wisconsin
Posts: 2
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I have an 81 Cherokee presently with a 258ci/727/np208(?). I am in the process of rebuilding a 360ci to put in to it with a TH400. I would like to put the 208 on the 400 and get rid of the B-W. Is this a direct bolt? Or will there be an adapter needed? Everything I read on this so far says an adapter is needed because of output location. The 79 output is on right side and the 81 output is on left side. I am assuming that it should be good to go, but there is question about the splines also. If no adapter is needed, will these mate correctly without modification? Any input would be greatly appreciated. Thanks guys. I am new to the FSJ World.
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02-16-2006, 01:40 PM
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Sloppy Shifter
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Join Date: Jan 16, 2001
Location: Norway Michigan
Posts: 15,996
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Nothing is impossible, but you are close:
Your NP208 will not bolt the your TH400. For 3 reasons #1 it is clocked wrong for the GM TH400 to NP208 adaptor, #2 Your 208 is a 23 spline input and a TH400 output is 32 spline #3 Your Jeep TH400 with the Q-Trac uses a specific output for the Q-trac, there is no T-Case that will bolt up behind it, without swapping out the output shaft.
Why not just use your TF727/208 behind the 360? Outside of needing the TF727 flex plate for your 360 it would be a bolt up deal.
Good Luck and Welcome! 
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Daily Driver 2008 Wrangler Sahara
Going, Gone, or Thinking Fishing
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02-16-2006, 01:41 PM
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Sloppy Shifter
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Join Date: Jan 16, 2001
Location: Norway Michigan
Posts: 15,996
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By the way...........Where in Wisconson are you? LOL gettin enough snow tonight?
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Daily Driver 2008 Wrangler Sahara
Going, Gone, or Thinking Fishing
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02-16-2006, 01:45 PM
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FSJ Maniac
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Join Date: Jan 08, 2003
Location: Centennial, Colorado
Posts: 2,907
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I gather it is not a 70's FSJ TH400 or it would have the long 10-spline output... I vote for the TF727 / NP208 combo... that's what I run... for what it's worth...
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1986 Grand Wagoneer "Troubled Child" • tc.wagoneer.org • Facebook • KØFSJ
Stock 360, TBI, 727 with TransGo, NP208, 4" Skyjacker, 33" BFG MT, WT Axles, Lock Right & ARB, OBA
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02-16-2006, 01:49 PM
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Sloppy Shifter
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Join Date: Jan 16, 2001
Location: Norway Michigan
Posts: 15,996
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Quote:
Originally posted by shimniok:
I gather it is not a 70's FSJ TH400 or it would have the long 10-spline output... I vote for the TF727 / NP208 combo... that's what I run... for what it's worth...
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Yea I am sure it is the Q-Trac output on it as he says he wants to get rid of the B-W
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Daily Driver 2008 Wrangler Sahara
Going, Gone, or Thinking Fishing
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02-16-2006, 01:57 PM
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New Member
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Join Date: Feb 15, 2006
Location: Wisconsin
Posts: 2
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I am in Southern WI...we got about 7 inches I think...lol. Will that 208 be strong enough for mild to moderate off-roading? I just want to make sure it will hold up to what I give it. I know the th400 is a strong trany thus the reason for wanting to swap it in in place of the 727. With the two set ups I have, what would be my best bet for a strong budget set-up?
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02-16-2006, 02:18 PM
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Join Date: Jul 30, 2003
Location: Normal, Oklahoma
Posts: 8,684
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Well the TH400 is strong, but give the 727 its due. I joke around calling it the Dork-flight, but in all honesty, mine would hardly pull the waggie around when I bought the truck. I put in a valve body kit, and flushed it out, a tweak here, a shaft seal there and it has been a great tranny for me. 179,000 mi on original build.
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Mark B. Jones
Quote:
Originally Posted by GrandWag&Prix
Actually, now that I think about it, that could be either awesome or really terrible.
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'79 Cherokee Chief "Junaluska"
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02-16-2006, 02:20 PM
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Sloppy Shifter
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Join Date: Jan 16, 2001
Location: Norway Michigan
Posts: 15,996
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The TF727 is a strong Tranny, the TH400 is my personal choice, but for what you are doing it would not be logical to go with the TH400
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Daily Driver 2008 Wrangler Sahara
Going, Gone, or Thinking Fishing
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02-19-2006, 01:27 AM
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FSJ Maniac
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Join Date: Oct 21, 2000
Location: bensenville, illinois, usa
Posts: 4,012
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81 Bigchief. I hope you did a bit of research on swapping the 360 for the 258. I also hope you still have access to the 360 donor if you didn't do any research.
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79Cherokee Chief<br />4\" BDS Lift<br />Custom Bumper <br />33\"x 11.5\" x 15\" BFG All-Terrains"<br /> T.H. 400 B.W.1339 Quadra Trac <br />Mile marker 16% O.D.part time kit<br />360c.i. Edelbrock pkg.<br />MSD ign. & coil <br/>Bored .030 over<br />Tri-Y headers<br />stainless steel exhaust<br />mustang seats<br />Holley 4bbl
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