fayesholley Posted October 14, 2009 Share Posted October 14, 2009 Please help me. Where would i find the gear ratios for a Mack 5 speed 1078 and a Mack 12 speed T1070. Thanks in advance Quote Link to comment https://www.bigmacktrucks.com/topic/11055-mack-transmission/ Share on other sites More sharing options...
HK Trucking Posted October 14, 2009 Share Posted October 14, 2009 For the 5 speed TRXL1078:1st - 8.592nd - 4.993rd - 2.844th - 1.665th - 1.00. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment https://www.bigmacktrucks.com/topic/11055-mack-transmission/#findComment-41936 Share on other sites More sharing options...
b61mack Posted October 15, 2009 Share Posted October 15, 2009 Please help me. Where would i find the gear ratios for a Mack 5 speed 1078 and a Mack 12 speed T1070. Thanks in advancethe 5 speed,2 stick 6 speed,TRDL1070 10 speed, TRTXL1070 12 speed all have the same ratios in direct,but in overdrive the 10 and 12 speed are the same. 1st 6.68 2nd 3.89 3rd 2.21 4th 1.29 5th 0.78. you could put a 10 or 12 speed behind a maxidyne and shift it like a 5 speed then if you shift on a hill you could split a gear, i am going to put a 10 speed in my 58 B model behind a 237. Ron Quote Link to comment https://www.bigmacktrucks.com/topic/11055-mack-transmission/#findComment-41938 Share on other sites More sharing options...
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