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I ponied up for the mid-range jack, it's hydraulic and claimed to be OK for 2000lb. I think that's the one you're referring to. https://www.harborfreight.com/2000-lb-low-profile-transmission-jack-60240.html Also appreciate the tip for the TCase alignment trick. Besides the transmission jack I...

Thanks for this advice and info RWH. I was told by someone else to pull the trans and Tcase together. Is that also your practice? For the engine, I have a motorcycle lift handy that I can put some big blocks of wood on. I think that would support the engine just fine. Much appreciated. BDGR

I'm gearing up for this job later this month. Finding out who my friends are (ha!) as I ask around for assistance. (only kidding, sort of) Can anyone comment on the proper balance point for the trans/t-case, i.e. where should I position the transmission jack under them as I unbolt them? I'll...

You make a strong case for me to put on my big boy pants come warmer weather FlameRed. I don’t have to do anything right now. I found this out Labor Day weekend. I’ve proven I can wait, good or bad. Thumper, I’ve been looking close to home, hoping I could find someone I could limp the truck to a...

I’m in northern Virginia. One exit north of Quantico USMC base. BDGR

Thanks FlameRed. Retired War Horses is across the country from me, or I would have gone to see him. I agree that local work is much better to manage and negotiate. I appear to have the later, stronger 4L80E, but it has suffered from running without fluid for a while (like many, many miles at...

I see I didn't answer your question about mileage. I honestly don't know. The powertrain came from Global Auto Parts Group in Kansas, arrived on an 8' pallet still attached to the frame. It definitely didn't look low miles, regardless of having been told all the units they scrapped were rarely...

Well, the local rebuilder/reman warehouse refuses to even try to source a remanufactured unit because I cannot supply a standard VIN they can cross reference to assure the exact model and internal specs of the replacement. They will look at the current trans if I bring it to them to open and...

Several members of the site have installed 700R4 and are happy. I was considering that route before I stumbled on a late 90's scrapped drivetrain. My 6.2L was VERY tired, so having both engine and 4SPD transmission was a bonus. BDGR

The rebuilder hasn’t seen it. I’ve been making phone calls. I do agree the $7500 special heavy duty quote is extortion. Without exception everyone I’ve called had no idea what a HMMWV transmission might be so they hedge their bets. Bear in mind I can’t drive the truck to them… Knowing I have a...

Many, many thanks for those clarifications RWH. I spoke to a local remanufacturer this afternoon and they said they can’t or prefer not to build pre-98, but perhaps I don’t have a 1997 even if that’s what my engine plate says. I crawled under the truck and the send and return cooling lines are...

Speaking of surplus/rebuilds, does anyone know if the 96-97 Hummer H1 4L80E is a direct fit for a stock late 90's HMMWV 6.5TD 4L80E? I'm wondering about tailstock, splines, mounts, oil pan, etc. I used to know the answer but have forgotten. There are rebuilds out there for Hummer H1 and they...

I'll give them a call. From the pictures the trans' look like they've been ripped out without much thought or care. Fittings and connections are probably open or broken or both. Look more like cores than usable trans. But I'll give them a call. BDGR

Thanks for the replies. I’ve been on the phone w Jasper. Their product impressed me. The Jasper option is more expensive than some but has a very solid warranty. I’m trying for good enough, rather than sink a lot into a truck I’m going to sell. Probably easier to sell it as-is.

Has anyone on the forum used an ATK Remanufactured 4L80E in their HMMWV? I had a cooling loop clog and my trans bit the dust a while back. I've been randomly finding time to search for a repair/replacement and this appears the best for the money, especially considering a local rebuilder wants...