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The engine is in the stock HMMWV 6.5 location yes, there is a differential and frame crossmember ahead of it which limits how far forward it can go without raising it another foot. I opted to go with the lower and further back position to keep the CoG low, but also because it's much easier from...

Going with a water to air IC means there's yet another coolant loop which also means there's another pump needed. I wasn't confident in how an electric pump would handle this kind of wear/tear, so I opted for the matching belt-driven water pump from a 6.7 powerstroke (also in the spirit of OEM...

The reports of this truck's death have been greatly exaggerated ;) I've been really bad about posting updates on expo/social media, but it's been coming along. The steering is done and works great, compared to a stock Isuzu NPR it's actually less slop (and all the play is in the original HMMWV...

Thanks for the kind words and apologies for the delay on updates, been too busy to post! I went through and replaced all the frame extension nuts with top-locking distorted-thread grade 8 nuts (been on the backburner for a while, ~40 total) and reinstalled the front suspension now that the...

Awesome to hear, I've also gone with Jason from transmissiontuner.com. Decided to go the custom harness route based on my odd routing needs, but it's been sitting in a box for the better part of a year now. I ended up buying the TCM and kit before deciding to swap the cab, which set me back a...

Doh! Should be fixed now, still getting the hang of this forum. Thanks!

General progress update: got my custom clocking ring to adapt the Allison 1000 to the NP242. All the off the shelf rings couldn't do the angle I needed so a friend machined this for me. I accidentally gave him the wrong bore sizes on the first iteration so it's now made 3 trips across the...

Great question! Something I've been noodling on for the last few months ;) I'll be using a combo of miter boxes and ujoints to bring the steering back from the CFE position to the HMMWV steering box. Sheppard (who makes the ECV HMMWV steering box) has a miter box used on other heavy equipment...

Appreciate it! ? Yeah the cab swap decision didn't come lightly, but ultimately it was the best for me. Sometimes I wonder if I'd be done already if I hadn't decided to do it :LOL:

Yeah, planning a composite sandwich panel camper. Trying to keep it light, but insulated enough to make a solar powered air conditioner viable.

Cabover Swap (cont.) Multiple dry fits, cuts, holes, tacks, and welds later I finally had extensions to mount the cab. I sprayed them with a two-part epoxy flat black and bolted them on, reassembling the suspension for the (hopefully) last time. (sorry for the photo dump) These extensions...

Next up was pulling the body off the frame and placing the drivetrain in. This involved getting new motor mounts for the engine (I used Mountain Machine's mounts), a Cummins to Allison bellhousing adapter plate and flexplate (also MM), new torque converter for the lower RPM powerband of the...

I've been working on this project on and off for almost two years now, so I figured it was about time for a build thread. Introduction Why a HMMWV (Humvee/Hummer H1/etc)? Lots of reasons, some more personal preference than others, but in no particular order: portal/CTIS hubs independent front...