kscarbel Posted March 14, 2013 Share Posted March 14, 2013 I've got an M123A1C and it has been an awesome truck for my logging business. Unfortunately, the motor just went on me. It broke the crank and now I am having a heck of a time finding replacement parts. At this point, I'm in such a need for it and having such a time finding a replacement V8 300 or parts for it, that I am thinking of just finding a motor to fit it. Any one have a suggestion of something that will do the job? The 300 Cummins was 785 CI, 300hp 300RPM to a Mack TRD XT72 trans., 5spd with a hi and low. I just need something that will fit and bolt up.Why don't you contact Cummins (1-800-DIESELS / 1-800-343-7357) and explain that you want to replace a 300hp model P1525 Cummins V-8. Ask them what other Cummins V-8s are a direct-fit replacement. Don't go up in power and torque though (you don't want to exceed that transmissions torque capacity).Have you contacted the miliary trucks parts suppliers like Memphis Equipment (901-774-0600) and White Owl (Kinston, NC 252-522-2586). They may have new, government-rebuilt or running used. Quote Link to comment Share on other sites More sharing options...
REOGasMackDiesel Posted March 14, 2013 Share Posted March 14, 2013 Memphis dropped the M123a1c trucks a few years back they won't be much help. The VT370 is the same engine with a turbo charger. You won't exceed the transmission's ability. The cummins diesel was weakier than the LeRoi gasser by 145tq. LeRoi HT844: 297hp/725tq. Cummins P1525 V300: 300hp/580tq. They call it many names: V210 P1525 V300 V785 and VT370. All the very same engine and rotating assembly the truck was designed in 1955 and built through 1970. Some where reman'd '70/'71/'72 also got retro-fitted with a V903. Hope this helps you out Mike Quote 1953 REO M48.1962 GMC 3000.1969 AMC AMX-390.1983 AMC Eagle SX/4.1988 AMC Jeep Comanche. Link to comment Share on other sites More sharing options...
kscarbel Posted June 5, 2013 Share Posted June 5, 2013 Down under, a “real” Mack truck can swim and fly (or at least, the ones enlisted with the Australian Defense Force can).. 1 Quote Link to comment Share on other sites More sharing options...
2stacksuperdog Posted June 5, 2013 Share Posted June 5, 2013 and our army uses Freightshakers Quote Matt Link to comment Share on other sites More sharing options...
rsb502 Posted June 5, 2013 Share Posted June 5, 2013 and our army uses Freightshakers Now its a Western Star cab with a Freightliner badge, a Detroit engine, Meritor axles and an Allison transmission tell me Daimler aint cashing in on that. 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 Share on other sites More sharing options...
kscarbel Posted June 6, 2013 Share Posted June 6, 2013 Now its a Western Star cab with a Freightliner badge, a Detroit engine, Meritor axles and an Allison transmission tell me Daimler aint cashing in on that.The Freightliner-badged M915A5 6x4 has a Western Star cab and Australian market Western Star hood. However I believe the chassis is Freightliner. The M915A5 is produced in Cleveland, North Carolina, a Freightliner manufacturing location for the Cascadia, Century Class, Columbia and exported Argosy II COE.No doubt it can be tough to make money on military contracts, but with Freightliner, Western Star and Detroit Diesel all owned now by Daimler, I'm sure the Germans made money. Quote Link to comment Share on other sites More sharing options...
kscarbel Posted June 8, 2013 Share Posted June 8, 2013 A product of Mack Australia, these right-hand drive RM-6866SX tractors were sold to the South African National Defense Force (SANDF). 2 Quote Link to comment Share on other sites More sharing options...
kscarbel Posted June 8, 2013 Share Posted June 8, 2013 Another right-hand drive RM-6006SX tractor produced by Mack Australia, this time for the U.S. Army in Japan. 2 Quote Link to comment Share on other sites More sharing options...
kscarbel Posted June 8, 2013 Share Posted June 8, 2013 And yet another right-hand drive RM-6866SX tractor from Mack Australia operating in Kenya (with what appears to be a Russian T-72 main battle tank). 1 Quote Link to comment Share on other sites More sharing options...
kscarbel Posted June 8, 2013 Share Posted June 8, 2013 Three more Mack RMs for overseas militaries. I apologize for the terrible picture quality but the trucks are impressive.The Air Force's RM has the air reservoir common to civilian Macks opted with Ingersoll-Rand air starters (http://www.ingersollrandproducts.com/airstarters/pdfs/f-237KB.pdf).Note the roof-mounted heat shield on the second RM, just as British enclosed-cab Mack NRs were fitted with for North Africa.The last RM with the 300 "Cool Power" hood scoop and 24.00-21 tires is just so impressive.. 1 Quote Link to comment Share on other sites More sharing options...
kscarbel Posted June 8, 2013 Share Posted June 8, 2013 With a 115,000 pound (52 metric ton) GCW rating, Mack Trucks aimed the RD-8226SX 6x6 at the tank transporter market. Standard spec’s included the legendary E9-500 V-8, CLS795 clutch, 10-speed T-2100 transmission, TC15 transfer case, 227-inch wheelbase and 12.00-24 rubber. 1 Quote Link to comment Share on other sites More sharing options...
RFCDrum Posted June 8, 2013 Share Posted June 8, 2013 Very impressive Mr Carbel. Cheers, Rob Quote Link to comment Share on other sites More sharing options...
bulldogboy Posted June 8, 2013 Share Posted June 8, 2013 Nice trucks. When did they change the round headlights to the quads? bullogboy Quote Link to comment Share on other sites More sharing options...
kscarbel Posted June 9, 2013 Share Posted June 9, 2013 Nice trucks. When did they change the round headlights to the quads? bullogboyThe RD-800 series had rectangular headlamps throughout its production, while the RM and DM (speaking of the steel nose) had round headlamps. Quote Link to comment Share on other sites More sharing options...
rsb502 Posted June 9, 2013 Share Posted June 9, 2013 The chassis on the 915A5 is not the same as an A3, I just happen to have been around the A3 quite a bit in IQ. The word we got was the Western Star cabbed truck was the only way to satisfy the new rfp for a set forward axle small sleeper truck convertible to extra seating. 1 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 Share on other sites More sharing options...
rsb502 Posted June 9, 2013 Share Posted June 9, 2013 TN Army National Guard had a white RD800 heavy haul tractor they replaced with a Cummins ISX 565hp powered Mack CL, with 12r24's, Mack 18spd, Mack 4.64 rears. 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 Share on other sites More sharing options...
felicello122 Posted June 9, 2013 Share Posted June 9, 2013 TN Army National Guard had a white RD800 heavy haul tractor they replaced with a Cummins ISX 565hp powered Mack CL, with 12r24's, Mack 18spd, Mack 4.64 rears.any pics of these two superdog Quote Link to comment Share on other sites More sharing options...
rsb502 Posted June 12, 2013 Share Posted June 12, 2013 any pics of these two superdogHeres one of the old RD800, its back in this thread somewhere but I couldnt find it, I cant find one of the Black CL they use now, they still use the same tan colored Fontaine lowboy and jeeps to haul the tanks on though. 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 Share on other sites More sharing options...
felicello122 Posted June 12, 2013 Share Posted June 12, 2013 Heres one of the old RD800, its back in this thread somewhere but I couldnt find it, I cant find one of the Black CL they use now, they still use the same tan colored Fontaine lowboy and jeeps to haul the tanks on though.thanks for the pic. Quote Link to comment Share on other sites More sharing options...
m16ty Posted October 23, 2015 Share Posted October 23, 2015 I now own the truck Superdog was talking about from the TN National Guard. I'd love to find more info about it.http://www.bigmacktrucks.com/index.php?/topic/42258-rd822sx/ Quote Link to comment Share on other sites More sharing options...
Svin Posted June 18, 2016 Share Posted June 18, 2016 http://www.trucksplanet.com/catalog/model.php?id=2200 Quote Link to comment Share on other sites More sharing options...
kscarbel2 Posted June 18, 2016 Share Posted June 18, 2016 12 minutes ago, Svin said: http://www.trucksplanet.com/catalog/model.php?id=2200 . http://www.bigmacktrucks.com/topic/45485-mack-defense-partners-to-produce-renault-armored-personnel-carrier/#comment-335295 Quote Link to comment Share on other sites More sharing options...
kscarbel2 Posted December 16, 2019 Share Posted December 16, 2019 1 Quote Link to comment Share on other sites More sharing options...
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