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OK fellas, thanks for the info. All of this is extremely useful. Both motors make similar HP and torque, the Detroit will work better with the 13 speed, the Cummins has more abundant parts, and the like. Now, being that both motors will work with my application, I think that I will go with a...

The Cummins 220 is turbocharged. I was told it was an I-6, but I may be wrong. I haven't actually looked at the Cummins.The more you guy's talk, the more I want the 6-71. I know either motor will be better than the 602, but, like I said, the deciding factor will probably be the price of the...

Turning up fuel on a Detroit... What kind of power gains could I hope to expect from this situation? Also, could someone give me a general torque comparison between a Cummins 220 and a 6-71? Also, someone told me that a 6-71's peak RPM was like 1700. I know this is crap, but what kind of rev's...

Alright. Information is sufficient. Both motors can do what I need. By the way, it's a Cummins 220, not 250. It will probably come down to which truck costs more. By the way, does anyone know about the torque capabilities of a 6-71? I assume it's not very high because it's two stroke.

How about driving experience from a 6-71? As can be guessed, this is not a long-distance hauler nor is it going to be much of a road truck. It's main job is to go into some mudhole, drag something out, and take it somewhere simply because it's already attached. That's why I'm curious. I can...

Alrighty, first off, I know this is for my 5-ton, but this seems to be a more appropriate place to pose my question. Anyway, I am looking to do a motor swap in my M-54. Right now, it has the Continental R6602 gasser. If you looked in the 5-ton forum, you would know that I am in the process of...

Sound advice. That could be bad for you. Also, how long have you had the deuce? That sounds like it could be a detroit in the rear...

Could this same image apply to an M-54?

Alrighty then. It looks like if I am going to do this(successfully) I am going to have to change the input shafts. How much is one of these going to $et me back? Also, how necessary is this clutch brake? Do I really need to hook this up, or can I just wait for the input shaft to stop moving when...

I thought the "Dragon Wagon" was the 60-ton trailer hauled by the M123 10-tons?

Ok. So, the input shaft on the 5-speed is 1 3/4", and the input shaft on the 13 speed is 2". In comparing the tips of the two shafts, I have discovered that they both take the same size pilot bushing. Also, comparing the two transmissions side by side, the input shafts are the same length. So, I...

Your right. The two input shafts are different. As for checking the input shaft, I pulled the one off the spicer and felt the blood drain from my face as I heard the clanking splatter of bearings falling into the sea of burnt 80-90. GRRRRRRRRRRRRRRR. Oh well. I'll fish'em out with a magnet. Now...

I finally figured out how to measure the bellhousing diameter!!! I couldn't fit a tape in anywhere, so I looked about the shop, and noticed a framing square. Hmmm.... Hold the square on the bellhousing, mark it with a grease pen, get radius. Double radius to get diameter. SWEET. Performed said...

I have no idea if the 13 speed has overdrive or not. The closer gear ratios is what I am looking for, anyway. In the 5-speed, first and second are great. Third is so-so, fourth is unbearable and I can hardly move in fifth. The gears are just spaced too far apart. I don't care how much I have to...

Well, as you can see in my other posts, I am attempting to find out if an Eaton 13 speed will fit into my M-54, so keep up and you'll find out.

Ok, from looking around, I have determined that the input shaft on the five speed has 10 splines. That is good, the 13 speed also has ten. My dad says he can solve my driveshaft problem, so all I really need to know is: What is the SAE bellhousing size of the five speed(Spicer 6352)?

Alrighty...I just got me an Eaton 13 speed transmission. I feel like finding out if I can possibly put this into my M-54. So, here come the questions for all the smart people who know what they are doing... What is the diameter of the bellhousing on the 602? How many splines does the stock...

Wow, isn't that convinient. I just located a FREE 13 speed from my cousin. Neato. He is in the scrapping buisness, collects alot of stuff. I'm a little late talking to him. He just scrapped 3 complete detroits about 2 months ago. DARN. I'll tell him to keep his eyes open. Really looking to get...

Because then it's someone else's design, someone else's work, not mine... I do stuff the hard way

Alright, I have decided that in the (possibly)not to distant future, I would like to go with a different motor in my five ton. This would go with several other modifications, such as 52 inch tires, wrecker boom, 5th wheel hitch, 5-ton winch, snowplow, and possibly a custom powered trailer...