More T-98 questions

Over vacation I decided to keep my :hurrican: because I like it to much . So that Xed out the 4.3 /420 swap that I was planning. Heres the new game plan Hurri/ T-98 /D18 so My jeep will stay a jeep not a chevy hybrid. plus I didnt want billy ragging on me about ditching a prefectly good hurri (yes billy I still remember what you told me at tellico ).I went back I read every thing I could about the T98 swap behind my hurrican but it left some questions. Here they are .

1. I understand that Im going have to lenthen my front shaft but with the lift in my jeep will I have to cut the rear?
2. Some people said that they had to drop the cross member some said they didnt , which is it?
3. The longer transmission should throw the clutch pedal pivot off , have yall had luck modifying the pivot mount or should I just figure in the cost of a chain linkage?
4 I the Dana 18 twin stick bracket going to be in the way of the T-98 ?
5 From what I understand it uses the same front shaft as the T-90 so I shouldnt have to change my clutch for the tranny swap right?

TIA

 

If you are serious about doing this, you probably ought to get the right transmission to begin with.

You can keep your clutch, however the T-98 shaft is ever so slightly larger than the T-90, so you may have to take your dremel tool to the splines on the clutch disk to get it to go on the transmission.

It isn't enough to simply have the clutch go on to the transmission input, it needs to be able to move fore and aft a little if it wants to.

Clutch pivot is different as you guessed, and the cable is different, and the clutch rod is different.

Floor plate is different.

Transfer case shift levers are different- at least the dual levers are different, I don't know about the single lever.

If you can buy the drive shafts, trans/transfer, spacer between the trans and bell housing, all the clutch connection hardware from pedal to transmission, you will be way ahead in the game. Most of those parts just don't exist anywhere as spare parts.

If you can find a CJ with the four speed, it may be easier to buy the whole jeep, swap out the tranmsissions between yours and the 'new' one and sell the 'new' jeep as a three speed.

 

Jason, I bought mine as a 66 CJ-5 behind the original F-head. Then swapped it into my flatty behind my :v6: . The clutch linkage pivot was about 1 inch off so I made a small steel tab about 2 inches long and drilled another hole into it and used the new hole as my new pivot point, and the old hole to hold the tab to the tranny or T-case. Easy and cheesy. I did lower my T-case, with 1" square tubing. My driveshafts needed to be changed. I used the one out of the CJ-5 in my flatty with no other mods. For my front one I used a later CJ shaft and cut it down to the correct length. My T-98 had a 15/16th inch input shaft with 10 splines IIRC. For that I used the original buick clutch cover and just went to the parts store and found a 9.5 to 10" clutch disk with the right size hub. The only thing I did to my release fork was to get one from Novak. Looking back, and knowing what I know now, I would have just modified one myself to work. Oh well. My T-98 was already mounted to the D18, twin stick, so that was a no brainer.
The easiest solution is to find one already mounted up, but that may be harder than it sounds. I did have to make a doghouse cover for the inside of the jeep, but that wasn't too bad either. Most of my mods were because of my use of the :v6: . Had I stayed with the flathead, or a F-head it would have been lots easier. Anyway, I hope this helps. I can take pics of any of this if you want me to. Take care.
Brannon

 

T-18 input shaft conversions are a great idea, only I haven't been able to find a shop willing convert a t-18 input shaft to the correct length and diameter.

kamel

 

Thanks yall , Im trying to get my plan together for this coming winter. I want to start gathering up parts so by the time it gets cold Ill be ready for the swap . Brannon tellico 06 I hope I wont have to ride the brakes and clutch following you on the trails .

 

Probably the best upgrade I did to the flatty was that four speed. No brakes.....no problem