keg1 Posted May 14, 2016 Share Posted May 14, 2016 i have an 85 r model with a 5 speed and i bought an 84 mh with a 10 speed and was wondering if the back section of the 10 speed would just bolt to the 5 speed and if so is there much to it or would it be easier to change trans. I thought maybe it would be easier than pulling trans. out of both trucks. Never had a trans apart so not sure whats involved. Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/ Share on other sites More sharing options...
theakerstwo Posted May 14, 2016 Share Posted May 14, 2016 Change trans Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333328 Share on other sites More sharing options...
1965 Posted May 14, 2016 Share Posted May 14, 2016 I thought from reading posts that if you changed from a 5spd to a multi shift trans you needed to change injection pump to get right performance out of engine Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333331 Share on other sites More sharing options...
steve p Posted May 14, 2016 Share Posted May 14, 2016 MAINSHAFT IS TOTALLY DIFFEFERENT Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333342 Share on other sites More sharing options...
carlotpilot Posted May 14, 2016 Share Posted May 14, 2016 41 minutes ago, keg1 said: i have an 85 r model with a 5 speed and i bought an 84 mh with a 10 speed and was wondering if the back section of the 10 speed would just bolt to the 5 speed and if so is there much to it or would it be easier to change trans. I thought maybe it would be easier than pulling trans. out of both trucks. Never had a trans apart so not sure whats involved. don`t think either trans is a 2 box setup Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333343 Share on other sites More sharing options...
TeamsterGrrrl Posted May 15, 2016 Share Posted May 15, 2016 You can substitute a 10 speed for a 5 speed with a Maxitorque engine... But it won't make the truck go any faster. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333345 Share on other sites More sharing options...
fjh Posted May 15, 2016 Share Posted May 15, 2016 Can't be done find a fuller rto for it you'll thank your self Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333347 Share on other sites More sharing options...
keg1 Posted May 15, 2016 Author Share Posted May 15, 2016 42 minutes ago, fjh said: Can't be done find a fuller rto for it you'll thank your self Do you mean i can't put the back of the 10 on the 5 or that i can't put the 10 in it. I just bought a MH with the 10 hoping i could use it. Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333352 Share on other sites More sharing options...
TeamsterGrrrl Posted May 15, 2016 Share Posted May 15, 2016 A Maxidyne doesn't need 10, 13 or more gears- The engine has a power band from 1200 to 2100 RPM or 1000 to 1800 RPM. Within that powerband the engine will put out over 90% of rated power, even lugged down or revved up against the governor. So swapping in a gearbox with more gears is just wasting your time and money> Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333353 Share on other sites More sharing options...
carlotpilot Posted May 15, 2016 Share Posted May 15, 2016 9 minutes ago, keg1 said: Do you mean i can't put the back of the 10 on the 5 or that i can't put the 10 in it. I just bought a MH with the 10 hoping i could use it. you can use the 10 or the five you can`t make 1out of the two - 2 totaly different transmissions Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333354 Share on other sites More sharing options...
keg1 Posted May 15, 2016 Author Share Posted May 15, 2016 8 minutes ago, carlotpilot said: you can use the 10 or the five you can`t make 1out of the two - 2 totaly different transmissions Gotcha thanks Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333357 Share on other sites More sharing options...
carlotpilot Posted May 15, 2016 Share Posted May 15, 2016 whats that mh look like Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333358 Share on other sites More sharing options...
theakerstwo Posted May 15, 2016 Share Posted May 15, 2016 2 hours ago, 1965 said: I thought from reading posts that if you changed from a 5spd to a multi shift trans you needed to change injection pump to get right performance out of engine That is true but when I posted I was thinking he had a bad trans and did not give him sound advice as Teamstergrrrl did.Like she said why change it anyway.run it for awhile if it good and you will get use to it.On a 200 mile trip flat or hills the 5 speed will save you some time saying you don't recalubrate the governor on the pump.But If your 5 spped is bad a 10 speed will work but you will be geared same on top end. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333359 Share on other sites More sharing options...
keg1 Posted May 15, 2016 Author Share Posted May 15, 2016 51 minutes ago, TeamsterGrrrl said: A Maxidyne doesn't need 10, 13 or more gears- The engine has a power band from 1200 to 2100 RPM or 1000 to 1800 RPM. Within that powerband the engine will put out over 90% of rated power, even lugged down or revved up against the governor. So swapping in a gearbox with more gears is just wasting your time and money> Its a 250 Econodyne if that matters. I had 237 with a 5 speed before but on this one you have to let it die way down to shift and then its dead trying to pick it back up and that was bobtailing so i don't know what its going to be like loaded. It only runs up to around 1700 rpm. I had an Econodyne 350 in my 89 and it ran 2100. Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333361 Share on other sites More sharing options...
keg1 Posted May 15, 2016 Author Share Posted May 15, 2016 33 minutes ago, carlotpilot said: whats that mh look like Pretty rough. Just bought it for parts mainly Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333362 Share on other sites More sharing options...
carlotpilot Posted May 15, 2016 Share Posted May 15, 2016 (edited) 14 minutes ago, keg1 said: Pretty rough. Just bought it for parts mainly parts and pieces is what I was thinking of. if you want to part with any of it let me know . I don`t know at the minute what all i`m looking for but like to know where some are Edited May 15, 2016 by carlotpilot Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333364 Share on other sites More sharing options...
keg1 Posted May 15, 2016 Author Share Posted May 15, 2016 9 hours ago, carlotpilot said: parts and pieces is what I was thinking of. if you want to part with any of it let me know . I don`t know at the minute what all i`m looking for but like to know where some are Will do. Bought it mainly for spare motor, trans, rears and anything else that might work on my r or superliner. Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333381 Share on other sites More sharing options...
TeamsterGrrrl Posted May 15, 2016 Share Posted May 15, 2016 OK, sounds like a previous owner already screwed it up by swapping in a 250 Econodyne which needs at least a 9 speed transmission... Sounds like a parts truck! Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333391 Share on other sites More sharing options...
NJ TRUCK Posted May 15, 2016 Share Posted May 15, 2016 Will Keg's Mack 250hp / Mack 5 speed retro fit into a B Model? If so, someone on the BMT Forum may be able to make a deal. Then I would put an E-6 350 / Fuller RR 9 speed combo into the R Model. Pending the budget of course. I drove that set up running local NJ/PA in the early 2000's and it worked well. Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333394 Share on other sites More sharing options...
1965 Posted May 15, 2016 Share Posted May 15, 2016 I know of couple of R's that came from the factory with 5spds & had econodyne on the hood Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333397 Share on other sites More sharing options...
carlotpilot Posted May 15, 2016 Share Posted May 15, 2016 2 hours ago, keg1 said: Will do. Bought it mainly for spare motor, trans, rears and anything else that might work on my r or superliner. does`nt look all that bad 1 Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333399 Share on other sites More sharing options...
carlotpilot Posted May 15, 2016 Share Posted May 15, 2016 33 minutes ago, tg144 said: Will Keg's Mack 250hp / Mack 5 speed retro fit into a B Model? If so, someone on the BMT Forum may be able to make a deal. Then I would put an E-6 350 / Fuller RR 9 speed combo into the R Model. Pending the budget of course. I drove that set up running local NJ/PA in the early 2000's and it worked well. with a cutting torch a welder and two big hammers you can make anything fit Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333401 Share on other sites More sharing options...
keg1 Posted May 15, 2016 Author Share Posted May 15, 2016 3 hours ago, TeamsterGrrrl said: OK, sounds like a previous owner already screwed it up by swapping in a 250 Econodyne which needs at least a 9 speed transmission... Sounds like a parts truck! Why would it be a parts truck? I have a 350 if I need it and I have a 10 speed so what's the problem in swapping them. Maybe where your from a good solid r model is easy to come by but around here they're not. I guess I didn't mention the 250 is an 87. I was told it was a 300 when I bought it but it didn't seem right on the way home. My bad for not looking at engine tag before I bought it. Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333418 Share on other sites More sharing options...
keg1 Posted May 15, 2016 Author Share Posted May 15, 2016 2 hours ago, carlotpilot said: does`nt look all that bad It looks better I the picture than in person. Frame is spread pretty bad under fifth wheel. The cab would need a lot of work. Everything under cab is rusty. Quote Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333420 Share on other sites More sharing options...
41chevy Posted May 15, 2016 Share Posted May 15, 2016 You have the entire running gear so I'd say swap it in, truck is well worth the time and effort in my eyes. Paul 1 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/45221-5-speed-to-10-speed/#findComment-333422 Share on other sites More sharing options...
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