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http://www.steelsoldiers.com/showthread.php?70703-M220-AirPak-rebuild When we did our M220 air pack rebuild/conversion the only difference we found between the M220 air pack push rod and the M54 air pack push rod was the length of the rod.

I understand the heat. Jollyroger and I took a drive straight through trip to Barstow last week to recover an M816 we bought through GL. Too many parts missing to drive it home, so we spent the pick up day towing it to a storage lot. Then we spent the next 14 hours driving straight home again...

Gunfreak, I checked eBay to see if the vendor where we picked up our air pack rebuild kit was still selling. He is not there and the only 5 ton (M54/800 series) kit was buy it now at $179. That is a far cry from the less than $55 we spent a little over a year ago. I took a look for our old...

Does that tower still use the T handle like the older C60's?

Gunfreak, Neat to keep the old tower, but you might look at the early 70's Chevys in the C60, C70 size. They too used a tower with that automatic and it might connect to the 700R4 with a less complicated shift arrangement.

They make a comb like tool with different spacing to straighten bent fins. It makes a big difference on a resale if the radiator looks new and straight. Sometimes there were two letter codes rather than numbers embossed into the tank and those would give you an application. The year date would...

To answer your material question, the T tube is copper. That radiator might be old enough to have the year of vehicle date embossed in the top tank. I once got into an argument with a buyer of a truck I was selling about the Harrison date on the radiator. He claimed the 57 chevy truck was a 55...

Gunfreak, Good to talk to you today. Attached is a photo of the front of my M220 when we had the grill off for some straightening and repair. You can see there are several inches between the stock radiator location and the grill. The radiator support can be moved forward with some...

That cab rear window is really interesting!! I see it has a bow handle and is a single glass. Mine is a double window with little metal tabs to grab and slide. Each window in mine pushes to the center to close and then slides either way to open. I will try to find a photo of mine to post. Might...

Is that rain in Yuma???? Your front on photo looks good. The 6.2 appears to be a good candidate to fit in the engine pit. I think there are quite a few of us interested in the kind of performance this conversion will produce. ~~~ Your number crunching would seem to indicate the 6.2 is a good...

The 4bt Cummins used in some MV conversions usually uses the bell housing from a bread truck application so as to clear the steering gearboxes. This is most effective on M37's. What happens is the engine is rotated off the center line. It looks sort of like the slant head 6 that Dodge used for a...

It looks like it is coming together!

The 455 would have its maximum torque at a higher RPM so it might very well give the same feel at lower RPM's that you get from a 302 or 6.2. The 455 would wrap tighter, but that higher RPM and torque/horsepower would start straining things that would be turning faster than normal. It...

The civilian version with 7.2 compression ration is 260 ft. lbs at 1400. The military ratio is around 6 to one.

Sunday evening I drove my M220 home from the Rocky Mountain Air Show. I slowed to 20 on a couple of long steep grades, but for the most part I was above 40 and there were some sections where I managed 55 MPH. The old dual range GMC Hydromatic just has a hard time downshifting soon enough to keep...

The M37 uses bent metal tubes as well to make some bends around the fan blade. ~~ When you get ready to fit the engine/transmission in place, it would be easier if you had the front clip removed or at least the fenders and inner panels out of the way. You should have some extra length (shorter...

It is true that the 700R4 has a wider spread of gears. And there are rebuilders who can make them almost bullet proof. But the cost of up-toughening is considerable. The basic TH400 is pretty stout from the get-go and it does not cost too much to do some stoutness upgrades. Changing the rear...

TH400 for sure. Over drive is nice, but expensive to make as tough as the TH400 with military gears.