03' Big Red Posted July 7, 2019 Share Posted July 7, 2019 I am looking at a 1997 Mack DM with a 6 speed maxitorque transmission, its a ready mix chassis with 4:42 axle ratio can someone tell me what ratios this transmission would have, I've searched the internet briefly and haven't found the info. I am most curios about 1st gear and 6th gear ratio. thanks in advance for any info Quote Link to comment https://www.bigmacktrucks.com/topic/58025-1997-mack-6-spd-maxitorque/ Share on other sites More sharing options...
j hancock Posted July 7, 2019 Share Posted July 7, 2019 What is the transmission model number? Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/58025-1997-mack-6-spd-maxitorque/#findComment-427189 Share on other sites More sharing options...
terry Posted July 7, 2019 Share Posted July 7, 2019 My guess with that rear ratio, would be the older direct six speed, not sure how late the used them . The later overdrive six speed was generally in the 5.00's ratio. But you never know who has mixed things up over the years. terry Quote Link to comment https://www.bigmacktrucks.com/topic/58025-1997-mack-6-spd-maxitorque/#findComment-427191 Share on other sites More sharing options...
j hancock Posted July 7, 2019 Share Posted July 7, 2019 Very true. A couple of examples. TRXL107 or TRXL 107A Low 1st 14.10, Direct 1st 8.59, 2nd 4.99, 3rd 2.84, 4th 1.66, 5th 1.00 TRXL1071 or TRXL1071A Low 1st 23.08 Direct gears are some as above Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/58025-1997-mack-6-spd-maxitorque/#findComment-427195 Share on other sites More sharing options...
03' Big Red Posted July 7, 2019 Author Share Posted July 7, 2019 3 hours ago, j hancock said: What is the transmission model number? no idea, its listed as a 6 speed Maxitourqe that and the 1997 model year is the only info I have right now. I am confused with the 4:42 axle ratio, I thought the mack trans had a .60 OD and typically used a 6:00 or lower axle ratio Quote Link to comment https://www.bigmacktrucks.com/topic/58025-1997-mack-6-spd-maxitorque/#findComment-427205 Share on other sites More sharing options...
Rob Posted July 7, 2019 Share Posted July 7, 2019 The latest chassis I have seen a T-107 series transmission in, (original) was 1987. I think the T-20 series was new for 1988. Nothing concrete there however. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/58025-1997-mack-6-spd-maxitorque/#findComment-427207 Share on other sites More sharing options...
terry Posted July 7, 2019 Share Posted July 7, 2019 6 hours ago, 03' Big Red said: no idea, its listed as a 6 speed Maxitourqe that and the 1997 model year is the only info I have right now. I am confused with the 4:42 axle ratio, I thought the mack trans had a .60 OD and typically used a 6:00 or lower axle ratio They generally used that 2060 trans. with about a 5.50 ratio, but it hard to say what has been changed through the years, you need a pic or model no. of the trans to help you here. terry Quote Link to comment https://www.bigmacktrucks.com/topic/58025-1997-mack-6-spd-maxitorque/#findComment-427219 Share on other sites More sharing options...
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