davehummell Posted January 10, 2020 Share Posted January 10, 2020 Next week I want to go look at a trans mounted behind an end 673 it has an aluminum housing? rear brake drum and pto. Where is the number that would be on it? It looks a little different than my duplex it has the bell and lever setup for the b single clutch I was told it was in a wrecker If I can get it for a reasonable price. There is another twin stick trans near it and it has a pull type clutch arm sort of looks like the other one. Quote Link to comment Share on other sites More sharing options...
terry Posted January 10, 2020 Share Posted January 10, 2020 Right behind the fill plug on the left side is a flat area, scrape real good, will be a KBA number and a trd, trt or a trq, duplex,triplex or quad, with a 72, 7210,or 7220, terry 1 Quote Link to comment Share on other sites More sharing options...
davehummell Posted January 10, 2020 Author Share Posted January 10, 2020 Thank's Terry Quote Link to comment Share on other sites More sharing options...
Rob Posted January 10, 2020 Share Posted January 10, 2020 I have one out of a truck if you would like photos. Also have a couple in trucks too without cabs installed. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment Share on other sites More sharing options...
Freightrain Posted January 11, 2020 Share Posted January 11, 2020 They made aluminum boxes. Triplex "TRTL" the "L" for lightweight. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
davehummell Posted January 11, 2020 Author Share Posted January 11, 2020 Well me and my buddy slogged threw the mud today to see what this trany is, it's a trtl720 with a power take off. the main box shifts ok but the rear box lever is stuck with rust Jay said if i'm interested we could take the cover off and have a look. I offered 100.00 and he said he will ask the owner what he want's. Is this trany a good setup for my late model673 and how much should it really go for? Quote Link to comment Share on other sites More sharing options...
Rob Posted January 12, 2020 Share Posted January 12, 2020 Doesn't sound like it's been anywhere in a while and probably not going anyplace either. Your offer is fair for something serving no purpose, IMO. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment Share on other sites More sharing options...
davehummell Posted January 12, 2020 Author Share Posted January 12, 2020 Not so dave collets 675's and 673's and he just got in a e-6 with a trans he sells all this range of engines plus trans and mack rears to Africa I beat them to it when I got the jake brake. Quote Link to comment Share on other sites More sharing options...
Rob Posted January 12, 2020 Share Posted January 12, 2020 (edited) 23 minutes ago, davehummell said: Not so dave collets 675's and 673's and he just got in a e-6 with a trans he sells all this range of engines plus trans and mack rears to Africa I beat them to it when I got the jake brake. If he has a market then there's a curve not really available in this country. I used to have two salvage yards call me when they had something antique and Mack to see if there was anything I needed from them. Haven't seen a B series in a long time but some early R models I've picked a few parts up for others restoring their projects. I'm in the market for a blown, poor running, or tired but complete 673 out of a B series as I have a very good running END673T out of a M54A1 military truck I'd like to convert to have as a ready spare. Nothing external on this engine is compatible with the civilian models. Edited January 12, 2020 by Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment Share on other sites More sharing options...
Hobert62 Posted January 12, 2020 Share Posted January 12, 2020 Local yard around here has or had an early R 10 wheeler with a turbo 673 and a trtl720 in it. Quote Link to comment Share on other sites More sharing options...
davehummell Posted January 12, 2020 Author Share Posted January 12, 2020 I have a end 673 i'm willing to part with for you name it Quote Link to comment Share on other sites More sharing options...
Rob Posted January 12, 2020 Share Posted January 12, 2020 10 minutes ago, davehummell said: I have a end 673 i'm willing to part with for you name it Being I'm in no hurry let's see if your triplex deal goes favorably for you as I do have a good one here. Single over but I put several thousand miles on the truck it is out of before breaking it into parts. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment Share on other sites More sharing options...
Freightrain Posted January 12, 2020 Share Posted January 12, 2020 Double over Triplex and 3.90 gears...........she'll get out in the left lane and run!!! I'd love to find a better transmission for my truck to replace my worn out, rattlin' Triplex. Someday something will fall in my lap? Even if it was another Triplex that I could tighten up? I've know a few guys that have some really smooth and quiet transmissions. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Rob Posted January 12, 2020 Share Posted January 12, 2020 Kind of the way mine is setup now. Double over triplex with 3.70 gears on 10.00X22 rubber. Pretty sure it would run into triple digits. Don't know what a guy would call that as I built it up from two different transmissions many years ago. One was a duplex, the other a triplex with both sections being overdriven. Probably going to change the transmission however as the backing speed is much too fast. Once I get this B-61T back to road worthy I'll probably start on another B61ST, (1958) which also has a triplex, (I always liked them) and use this ex military engine with an RTO-9509 trans I have behind it. That tractor has 5.05 rears but there are good sets of 4.17, and 3.65 Mack rears around here. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment Share on other sites More sharing options...
Freightrain Posted January 12, 2020 Share Posted January 12, 2020 I remember looking at a Double over Triplex before and realizing first and rev were pretty fast. They were meant for a deep rear gear. With my 4 spd aux, I could still have my slow speed if I wanted it. I'm kinda pushing the power with the little 6041 box, but I'm not heavy. I'd like to just get something a bit more stout. Bert offered me an 8 series box, but I didn't want to go through the retro fit right now. Maybe I should have bought it anyway? Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Rob Posted January 12, 2020 Share Posted January 12, 2020 15 minutes ago, Freightrain said: I remember looking at a Double over Triplex before and realizing first and rev were pretty fast. They were meant for a deep rear gear. With my 4 spd aux, I could still have my slow speed if I wanted it. I'm kinda pushing the power with the little 6041 box, but I'm not heavy. I'd like to just get something a bit more stout. Bert offered me an 8 series box, but I didn't want to go through the retro fit right now. Maybe I should have bought it anyway? Mine was originally a "Monoshift" that got "into" two gears at the same time and the auxiliary exploded. I took a triplex that had been run low, or out of oil and as an experiment married them up together. That was back in about 1997, or 1998 and the combination really was pretty good but much too fast of gearing with a load on, or backing. With a "monstrous" 170hp on tap and under control of your right foot, it took a while to get any speed out of it..... The later model engine "should" make up for some shortcomings of the original. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment Share on other sites More sharing options...
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