460P Posted November 7, 2014 Share Posted November 7, 2014 I have a 2007 Mack CHN 613 with a mack 460P, standard mack 10 speed trans, mack 4.17 rears, 11r24.5 rubber. New charge air cooler, egr value + cooler, new turbo. Just had the ecm reflashed for additional 100 HP. The truck runs 1300 rpm in 10th @ 55 mph or 1850 rpm in 9th. Most of the time we are running 55 mph. Quote Link to comment https://www.bigmacktrucks.com/topic/37654-should-i-put-a-18-speed-in-my-truck/ Share on other sites More sharing options...
460P Posted November 8, 2014 Author Share Posted November 8, 2014 Hauling 90,000# most of the time with short runs with grade. Quote Link to comment https://www.bigmacktrucks.com/topic/37654-should-i-put-a-18-speed-in-my-truck/#findComment-265957 Share on other sites More sharing options...
Ezrider Posted November 8, 2014 Share Posted November 8, 2014 i can't see any reason not too, you will really like the 18 speed. iv had several trucks with 18's 13's 10's and 9's. 18's are a slight step above a 13, but splits in the high side are normally what is needed. not a huge differance in drivability between the two but both a huge step of from a 10 or 9 in driveability. my current truck has a 13, if i ever have to replace the trans ill probably replace it with a 18 as i do a lot of offroad but no issues with using a 13.biggest differance is 200 rpms between gears vrs 400. so you would be able to run 1600 at 55 vrs 1300 or 1800 by running in 17thyou don't half to use every gear you can skip gears you dont need but there there when you do need them. Quote Link to comment https://www.bigmacktrucks.com/topic/37654-should-i-put-a-18-speed-in-my-truck/#findComment-265980 Share on other sites More sharing options...
mack mhe9 Posted November 8, 2014 Share Posted November 8, 2014 Yep. Quote Link to comment https://www.bigmacktrucks.com/topic/37654-should-i-put-a-18-speed-in-my-truck/#findComment-265989 Share on other sites More sharing options...
Superdog Posted November 8, 2014 Share Posted November 8, 2014 Just in case you didn't know,the Mack 13 and 18 speeds are the same transmission,only difference is the shift knob. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/37654-should-i-put-a-18-speed-in-my-truck/#findComment-266017 Share on other sites More sharing options...
farmer52 Posted November 8, 2014 Share Posted November 8, 2014 What model is the 10 speed....T2100?Can a 10speed be used with a Maxidyne engine (specifically a 1992 EM7-300)? Quote Ken PRR Country and Charter member of the "Mack Pack" Link to comment https://www.bigmacktrucks.com/topic/37654-should-i-put-a-18-speed-in-my-truck/#findComment-266022 Share on other sites More sharing options...
460P Posted November 8, 2014 Author Share Posted November 8, 2014 T310 Quote Link to comment https://www.bigmacktrucks.com/topic/37654-should-i-put-a-18-speed-in-my-truck/#findComment-266029 Share on other sites More sharing options...
460P Posted November 9, 2014 Author Share Posted November 9, 2014 Thanks for the advice guys. Quote Link to comment https://www.bigmacktrucks.com/topic/37654-should-i-put-a-18-speed-in-my-truck/#findComment-266085 Share on other sites More sharing options...
Superdog Posted November 9, 2014 Share Posted November 9, 2014 What model is the 10 speed....T2100?Can a 10speed be used with a Maxidyne engine (specifically a 1992 EM7-300)?it will work but you'll lose road speed unless you change rear end too,your 2050 has the really tall overdrive, .60 .a T2100 is .77 Quote Link to comment https://www.bigmacktrucks.com/topic/37654-should-i-put-a-18-speed-in-my-truck/#findComment-266091 Share on other sites More sharing options...
rsb502 Posted November 9, 2014 Share Posted November 9, 2014 I would run the Mack 10/speed until it broke or I needed a clutch then go to a 13 or 18. If you don't need to split the low side get the 13 itll be cheaper, and remember going from a 310 to a Mack 13/18 your rpm will run about the same in top gear but an Eaton is geared lower on the top end so for ease of install and keeping gearing the same go with a mack 313 or 318. 2 Quote "Any Society that would give up a little LIBERTY to gain a little SECURITY will Deserve Neither and LOSE BOTH" -Benjamin Franklin"If your gonna be STUPID, you gotta be TOUGH" "You cant always get what you want, but if you try sometimes you get what you need" Link to comment https://www.bigmacktrucks.com/topic/37654-should-i-put-a-18-speed-in-my-truck/#findComment-266104 Share on other sites More sharing options...
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