rsb502 Posted May 18, 2014 Share Posted May 18, 2014 Aight I got nothing, been looking at an RD on truckpaper, says it has an 8LL but its a Mack trans so they're wrong. Question is which one, I can't get a good view of the shift pattern but it looks like a 7spd but with one more position. Its got 4 positions forward, three back, the three positions farthest to the left have a split, the 4 to the right do not. Anybody know which trans this is, its only got the one splitter on the shifter and if you can only split reverse and the first two gears that would be just like a 7spd only with one extra splittable low gear. 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/35756-8spd/ Share on other sites More sharing options...
slpwlker Posted May 18, 2014 Share Posted May 18, 2014 Probably lo1,2,3 high 1,2,3,4,5, Drove one for Deere Mack except it had the multi reverse interesting to drive Quote Link to comment https://www.bigmacktrucks.com/topic/35756-8spd/#findComment-245981 Share on other sites More sharing options...
rsb502 Posted May 18, 2014 Author Share Posted May 18, 2014 Looks like you can split reverse and the first two gears of a six speed, the last 4 are one range only. 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/35756-8spd/#findComment-245985 Share on other sites More sharing options...
RFCDrum Posted May 19, 2014 Share Posted May 19, 2014 I drove one of these it's basically the seven speed with an extra gear in the low end and then a five speed in direct. The other eight speed is the b version I believe that has the shiftable reverse which a lot of mixers by me came in with. Rob Quote Link to comment https://www.bigmacktrucks.com/topic/35756-8spd/#findComment-246166 Share on other sites More sharing options...
Lmackattack Posted May 19, 2014 Share Posted May 19, 2014 mack 8 speed....just like the mack 7 they suck!....very slow low gears and very fast over drive but its basicly a 5 speed except you pretty much have to do a range change with a load on... they were speced with real slow rears 4.42-5.73 were common. its kinda like a 5 speed but your first 3 gears are very slow and you don't always use them when empty. most people drive them by starting in the low side/2rd hole. then flip the switch into Hi and back into 1st hole. I really disliked them as you almost always had to start in the low side with a load on and flip the switch to get back into hi and then do your normal 1-2-3-4-5 but you still were doing a best of 65MPH at the end kida pointless if you ask me .IMO a old 6 speed is way better. If you wanted more gears a 12 over drive would have been the better trans because of the ease of shifting.That's my point of view !. Quote Link to comment https://www.bigmacktrucks.com/topic/35756-8spd/#findComment-246171 Share on other sites More sharing options...
oilburner Posted May 19, 2014 Share Posted May 19, 2014 Is it 1,2,3, in low then 1,2,3,4,5 in direct that's how the 8 speed Mack that I have seen shift Quote Link to comment https://www.bigmacktrucks.com/topic/35756-8spd/#findComment-246185 Share on other sites More sharing options...
oilburner Posted May 20, 2014 Share Posted May 20, 2014 this is a 8ll and a Mack 8 speed Quote Link to comment https://www.bigmacktrucks.com/topic/35756-8spd/#findComment-246194 Share on other sites More sharing options...
rsb502 Posted May 20, 2014 Author Share Posted May 20, 2014 Its kindof like the secind pattern there but on top there are 4 gear positionsstarting from the left it goes forward far left R and R lo, out and back forward to the right of R is 1 and 1lo, back to 2 and 2lo, then forward and next to 1 is 3, back to 4 forward next to 3 is 5 and back to 6. I have driven every kind of truck and transmission there was out there or so i thought until I saw this one, never seen one like it. guess it would be Lo-1-2 HI-1-2-3-4-5-6, just never seen one and I cant read the pattern but looking at others and doing the guessing game thats what I come up with. 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/35756-8spd/#findComment-246208 Share on other sites More sharing options...
86mackR-Model Posted May 20, 2014 Share Posted May 20, 2014 I may be wrong, but I think that was a tm308 mack trans... I could be wrong on the numbers but pretty sure that was it.. Had one in a 2004 r-model legend, wasn't a fan 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35756-8spd/#findComment-246213 Share on other sites More sharing options...
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