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I don’t feel attacked by any of your posts. I actually welcome the thoughts and opinions. I will eventually replace the radiator before I start taking it on any drives. I’m just keeping it in place for now so that I can get all the coolant stuff routed and to keep the engine running long...

I never said I was going to let the engine overheat. If I notice the temps getting too high I’m obviously going to shut it down. Anyhow, I’m going to be taking the body back off in a couple of weeks for some fresh paint. I was thinking of raising the body mount brackets 3”. This way I...

It wouldn’t be any more uncomfortable than the factory ride quality seeing how I’m still retaining the factory bushings. But as far as using polyurethane bushings… I won’t be doing that. I have use polyurethane bushings from energy suspension on my avalanche and dad thing started squeaking...

I wonder if he treated the rubber prior to installation.

I know a guy who used hockey pucks on his Humvee 6 years ago and he recently took the body off. He said the bushings looked fine and didn’t show any signs of wear. I guess I’ll find out.

Update: Sorry guys for not posting any updates. I’ve been working on my house since last year to get it ready to sell. Unfortunately he left me no time to work on the Humvee. However, I am happy to report that I bought the tin man conversion brackets for the engine and transmission. The...

True. I’ll see what I come up with. I will eventually replace the radiator with an aluminum version but for the time being I will put the money where it’s needed most right now (getting the engine running)

I wouldn’t think so. Especially after you factor in the reatriction that the air has to go through just to get passed the radiator, intercooler and tranny cooler.

I wasn’t considering replacing the mechanical fan. I was just thinking about adding an electric fan for added cooling. I know the pre-2006 Duramax trucks were plagued with overheating issues. Into 2006 GM went with a bigger radiator and a bigger fan. This seems to have solved the issue.

Yup. That was the one. Obviously I am not going to overpay seeing how I am so cheap. LOL. I’m just going to find the slimmest fans that put out the most CFM of air. I can just wire it to a temperature sensor to turn on at a pre-set temperature. I’m sure it will still come out to be way...

I remember reading somewhere that someone had used two pusher fans in conjunction with the OEM set up and it worked great. I was thinking of trying that.

I think I’m going to give the OEM radiator a shot and see how well it does. I can always swap it out later As as for the drivetrain upgrades... I will be updating the shafts to the 12.3K versions. As for the diffs I am going to leave them in place to see how much they can handle.

No I have not. I have never dealt with them but I would figure they would tell me whatever they had to to try and sell me their product. I was hoping I could get some input from someone who has already been down this road. Update: The original radiator can be used 👍🏼

Quick question guys... I was thinking of reusing the original radiator. I know H-line conversions uses a replacement radiator but it looks similar in size. Is it just because to put in a aluminum version? I was also thinking of reusing the original trans cooler. What are your thoughts on this?

Quick update: 8/23/2018 I removed the old engine/trans/TC. I just bought a 2005 Duramax with a 5spd Allison trans and TC. I putting aside all the parts that I’m going to be selling; radiator, smart start, both driveshafts, trans, 242NP TC, etc etc. I’m currently making a list of all the...

Thanks everyone for your input. I think I’m going to go with the Timmans kit. The thing about the special oil pan...I didn’t know that. I’m going to document the entire build process and once it’s done I’ll post it. It’s going to take some times because I work real long hours and I hardly...

Yes I know about the body lift being needed to clear the Duramax. What I wanna know is what is the difference in the mounting hardware other than the motor mounts. Is the crossmember different?

Good morning everyone. I’m about to start on a Duramax engine swap. I just purchased an LLY with a Allison trans/transfer case. The first thing I wanna do is get the engine installed. My question is… Cant I just use the motor/trans mounting hardware from a Hummer H1 duramax? It should be...