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Trans temp is monitored by the TCM and there's a light for over-temp in the annunciator panel. The data is also on the CANBUS so if you install something like the Bluefire dongle, etc you can display trans temp on a tablet or phone. These trucks have pretty good transmission cooling and huge...

Go back to 3.90's. The 3.07's don't realize the full potential fuel economy gains. Neither do the 3.90's but no one makes 4.50's (yet 🤞). 3.07 vs 3.90 - seems to be about 1 mpg difference. The 3.07's are on the wrong side of the bell curve for fuel economy and performance.

Right. Everyone in this forum must consider that, unfortunately, since S&S didn't. It boggles my mind that my CUCV from 1984 has twice (200A) as much alternator(s), half as much battery (two 6TL's or two GRP 31's), and predates the FMTV's by a decade. The DOD should have made S&S fix them at...

Monitoring lockup state in Allison DOC should clear this up. There are many options both in DOC and even more available to Allison engineering in the base program they load for the specific application. I'm sure they can make it function however they want as long as they can unlock it fast...

The military likes them because they don't leak and are MUCH less affected by low temperature. They can also suffer minor damage and continue to function (think a crack in the case, etc). A wet cell will leak out the acid if cracked and cease to function (no electrolyte = DEAD) while an Absorbed...

They are pretty much all $600+ these days. There's essentially Odyssey (Enersys, Hawker, etc), Optima, and some others like Full Throttle (China). But pretty much all of them are in that same price range.

Yeah I observed mine again and it stayed engaged till about 10 mph. The speedo doesn't respond fast enough if you are stopping quickly.

Hhhhmmm. I'm in Portland, OR and the weather here rarely touches the ether temp on my truck. Typically I am waiting for the intake heater light to go out. This was a 17F ether start last winter. You can see that the intake heater light is out before I crank it and I got the black ether smoke...

You're images don't function. Try using the forum on a PC maybe instead of a phone? Just guessing.

Initially. Followed shortly by losing the whole truck...... It's like tripping on your shoelaces that have come untied and falling...... into a pond full of gators and syringes.

Ether is used below about 20F actually. You can tell when it's activated because the grid heater will NOT turn on (don't want to blow the intake off the engine) when the ECM selects ether. Once the engine fires the grid heater comes back into play to warm up the engine. The C7 will typically...

Tighten the nut on the motor for the linkage arm when the wipers fail to park in the horizontal orientation. Same issue occurs at the motor shaft and they like to work loose.

You can see the exhaust brake lamp on my annunciator panel and the current gear to the right on my trans display. This is coming to a stop from around 40 mph. https://drive.google.com/file/d/19YhMYarWcI0e946XOjjxvow8DVGer7bL/view?usp=drivesdk

You sure it's oil and not fuel? Injectors have seals for oil, coolant, and fuel in the head. So could be injector cup seals. And yeah the head gasket also seals coolant and engine oil so I suppose it's possible that it could be a faulty head gasket installation. I would pull the injectors and...

I'll take a video of coming to a stop in my truck. Yes the exhaust brake disengages when you hit 2nd gear because the converter unlocks so the exhaust brake has no effect. But it still works normally and down to about 15-20 mph. You get used to it quickly and it's a non issue. Coming down steep...

Definitely. Have a large assortment of bearing races, pipe and pipe caps, assorted round chunks of odd bits and pieces - in a bucket under the press. Sockets (impact sockets typically) stand in often for pressing duties as well.

Delrin makes great drivers and machines beautifully. Expensive though. Making drivers on the old lathe takes time and I'll have the job done before the driver is made. Great if you need to hand the driver off to a lowest common denominator (grunt) to use the tooling repetitively with his brain...

Oh yeah. I've bought a whole lot of tools for the big truck. Not a stranger to seal drivers - have used plenty and had to make a few over the years but have not bothered in a lot more years..... you learn techniques to get the job done without some of those special tools "training wheels"...

Seal drivers aren't typically necessary. Honestly can't recall the last time I used one.... or had a leaking seal (that I installed). Usual weapons of choice - screwdrivers, punches, and socket extensions. Steady hand and an eagle eye. But to each their own as long as the job gets done with good...

Yes. The 3.07's are kinda falling down the backside of the ideal gear ratio curve but it's still a win. Ask @ckouba about his truck. It's an MTV ( M1088 ) chassis with a HUGE enclosure and it came to him with 3.07's. He loves the ECO hubs and has had zero issues off road with them. He has...