KAT MAN
Member
- 30
- 0
- 6
- Location
- California
hey guys
has anyone swapped a Catperillar D-7155 transmission into a M931?
Thanks
has anyone swapped a Catperillar D-7155 transmission into a M931?
Thanks
-
Steel Soldiers now has a few new forums, read more about it at: New Munitions Forums!
swap the Catperillar D-7155 Overdrive transmission into a M931
- Thread starter KAT MAN
- Start date
- 6,070
- 4,441
- 113
red
Active member
- 1,988
- 25
- 38
- Location
- Eagle Mountain/Utah
https://www.steelsoldiers.com/showthread.php?169592-Simp-s-Cat-7155-Swap-into-a-M923A1 He's installing it into a m923a1
Well 98G beat me to it haha
Well 98G beat me to it haha
- 6,070
- 4,441
- 113
I beat you!
KAT MAN
Member
- 30
- 0
- 6
- Location
- California
thanks guys for the link, looks like I have a lot of reading to do 
KAT MAN
Member
- 30
- 0
- 6
- Location
- California
also I was wondering has anyone mated this transmission to a CAT 3406B?
red
Active member
- 1,988
- 25
- 38
- Location
- Eagle Mountain/Utah
Both that engine and transmission were available in civi trucks, gotta be a few of them out there set up that way. They will work together fine. The medium/heavy duty market has things standardized unlike the 1 ton and lighter market where each manufacturer has their own setup (Chevy engine wont bolt up directly to a ford trans for example). In this market it's all SAE 1,2,3 bellhousings and each engine/transmission is adaptable to that.
Csm Davis
Well-known member
- 4,166
- 393
- 83
- Location
- Hattiesburg, Mississippi
The transmission won't fit in a M929,930, 931, 932, or any variants there of. The wheelbase is to short. Maybe the A2 because the engine is shorter and moves the transmission forward but Simp had to move his transfer case back and has a very short driveshaft.
Sent from my SM-G930V using Tapatalk
Sent from my SM-G930V using Tapatalk
Last edited:
snowtrac nome
Well-known member
- 1,674
- 139
- 63
- Location
- western alaska
a 3406 in a 5 ton would be cool even a slightly hopped up 3306 would be a neat transplant
- 2,664
- 2,198
- 113
- Location
- Sunman Indiana
Sounds like a challenge....KAT MAN!
74M35A2
Well-known member
- 4,145
- 330
- 83
- Location
- Livonia, MI
Too many amps.
KAT MAN
Member
- 30
- 0
- 6
- Location
- California
thank you for sharing your knowledge thats good to hear that I can adapt it to it.
I should have clarified the 3406 is for another project but it would be a cool project to get it in one of these military rigs
I love a challenge and having something unique so it sounds I need to make this happen
Csm Davis
Well-known member
- 4,166
- 393
- 83
- Location
- Hattiesburg, Mississippi
No not what I was posting about! The transmission won't fit goobers. Almost any medium and large truck motors will fit.thank you for sharing your knowledge thats good to hear that I can adapt it to it.
I should have clarified the 3406 is for another project but it would be a cool project to get it in one of these military rigs
I love a challenge and having something unique so it sounds I need to make this happen
Sent from my SM-G930V using Tapatalk
KAT MAN
Member
- 30
- 0
- 6
- Location
- California
How about if the a transmission hump is fabbed up?
It wont fit in a short wheel base truck and be able to use the transfer case. If you use the transfer case your one driveshaft will only be about 8 inches long. Almost impossible for a companion flange setup. only other option would be to move the bogie back and thats alot of work. You might as well anticipate about $2500 for everything including the transmission. Even more if your not a fabricator. Some parts you would need can be hard to find.
You have to add a 3inch hump or raise the cab 2.25in and modify the cab center channels. The hump is hard to do. Since you have to make new engine mounts, cab mounts and rear cab crossmember it is just easier to raise the cab
Sent from my SM-G935P using Tapatalk
Last edited: