shortstack Posted September 23, 2015 Share Posted September 23, 2015 I was wondering if someone could tell me what the difference is between a T-2180 and a T-318 transmission. I'm wanting to replace my eaton 10 speed with a mack 18 speed and I'm trying to decide which I should try to find. Thanks. Quote Link to comment Share on other sites More sharing options...
Challenger Posted September 24, 2015 Share Posted September 24, 2015 Gear and sliding clutch engagement teeth are smaller on the T318. T3s have a different HI/Lo shift cylinder with less parts. Both of these are suppose to improve the shifting. Quote Link to comment Share on other sites More sharing options...
kt_Engineer Posted September 24, 2015 Share Posted September 24, 2015 T2180 is the 2nd generation triple countershaft transmission and has been out of production since 2002-2003 timeframe. T318 is the current production (3rd generation) 18 speed triple counter-shaft transmission. There are different versions of 18 speeds in both T200 & T300 series with slightly varying ratios (For example there is T318, T318LR, T318 21 and T318LR21; The LR's have creeper gears and 21's are capable of 2100lb-ft as against 1800 lb-ft torque engines). 1 Quote Link to comment Share on other sites More sharing options...
shortstack Posted September 24, 2015 Author Share Posted September 24, 2015 Okay thanks for the info. Now I'll see what I can find. Quote Link to comment Share on other sites More sharing options...
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