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T18 OR T18A?

  
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T18 OR T18A?

 
CJMAN CJMAN
New User | Posts: 12 | Joined: 07/08
Posted: 07/11/08
09:11 AM

IS THERE A METHOD TO DETERMINE THE DIFFERENCE, OTHER THAN PULLING IT FROM THE VEHICLE?  IT IS PRESENTLY IN MY 1975 CJ6 BUT I KNOW IT WAS NOT STOCK FROM THE FACTORY.  THE TRANSFERE CASE IS A DANA20 AND THE DIFF GEARS ARE 3.74'S. THANKS FOR THE HELP.  

 
Lowrider2 Lowrider2
New User | Posts: 1 | Joined: 07/08
Posted: 07/11/08
09:43 AM

Check the first gear.  T18A has a granny gear (unsyncronized).  Below are the gear ratios
      1st   2nd   3rd   4th    Rev
T-18  4.02  2.41  1.41  1.00   4.73  
T-18A  6.32  3.09  1.69  1.00   7.44  

 
CJMAN CJMAN
New User | Posts: 12 | Joined: 07/08
Posted: 07/11/08
01:07 PM

THANKS FOR THE INPUT.  I BELIEVE THAT BOTH TRANSMISSIONS HAVE UNSYNCRONIZED FIRST GEARS AND I AM AWARE OF THE INDIVIDUAL GEAR RATIOS.  THE QUESTION REMAINS, HOW CAN YOU DETERMINE WHAT THE FIRST GEAR'S RATIO IS WITHOUT TAKING IT APART?  

 
Motorcraftfired79 Motorcraftfired79
New User | Posts: 2 | Joined: 08/08
Posted: 08/14/08
10:36 AM

Take A look at Novak Adapters site they have alot of info on T18 trannies. I might be able to help.  

 
Motorcraftfired79 Motorcraftfired79
New User | Posts: 2 | Joined: 08/08
Posted: 08/14/08
10:38 AM

Sorry that was supposed to be It might be able to help.  

 

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