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Transmissions Allison Medium duty trucks will nearly all run Allison transmissions. Most I have seen are the 3000 series (3060 or 3000EMS). Be careful when checking the vehicles out as some are configured as 5 speed even though the box is a 6 speed. They can be reprogrammed but it costs $$ and...

Tires and Rims This is the one I get most questions about. There are basically 3 types of hubs used on the medium duty rigs: 8 on 275mm (these seem to be the most common. Especially if you want hydraulic disk brakes. The rear axle will probably be rated up to 15,000 lbs. 10 lug hub pilot ...

There is a lot of valuable information particular to medium duty ambulances being buried in various build threads. So I am proposing that we have an FAQ (Frequently Asked Questions) specific to the medium duty chassis ambulances. By this I suggest the C4500, C5500, International and Freightliner...

This is running the calculations on my truck with the planned diff change. You will notice that if I go for a 6 speed instead of the 5 speed it will give very little net effect on the final rpm v speed ( a little lower rpm at cruising speed) but will give me an advantage in the lower gears...

I will be changing my final drive ratios. But remember I am looking at cruising at 65 with no real requirement for over 70 (not much interstate work and I need the lower grunt for the more adventurous tracks). Plus my change from 29" to 43" was a bloody big step. You will be going from 33" to...

Medium duty Freightliner trucks (usually the ones with electronic injection) have a data bus that you can hook up monitoring devices. In the case of both our trucks it is a J1708 (6 pin port) or something with those numbers and the later ones have J1309 (9 pin port) For basic monitoring and...

I have a spare seat mount if you are considering putting a 3rd seat/console in the middle. I should of thought of it earlier and you could of checked it out. I am fairly sure the captive nuts will be under the floor and you would probably just need to drill the floor skin off the top of them.

Hi Scooter I wouldn't be concerned about getting stuck. There are a couple of thousand people itching to get their recovery gear out. And our buddy Wolf with his deuce 1/2 had a great time pulling out everything up to a class A motor home. With your tranny temp. Have you checked all the wiring...

No rush. I am ok with a 5 speed until I swap out the axles. The truck is faster than the tires with only 1 overdrive at the moment.

Defiantly expo bound and I will have the truck which was at risk for a while. The fact that it is just up the road from us makes it a lot easier than those who travel considerable distances.

Shifts as slick as snot on a doorknob. [emoji1][emoji1][emoji1][emoji1]

Supposed to be right to go. But I forgot I had taken the bike rack off. Luckily I rode the little bike over.

Personally I say yep bring the rig. But that's just me being an Ambo voyeur. Seriously though there will be a bunch of people who have done this stuff before who may be able to see some potential layout ideas for you to consider as well as give you the experience of their not so well thought...

If (actually that should be a "IF") they get it going today it will be there in the feature vehicles area. Also we are running a couple of sessions on 1pm Friday and 11Am Sunday officially titled "DIY Overlander: How to convert an ambulance, bus, or military truck". But you are welcome to drop...

Cruise control!!!!! Now you are rubbing it in for us unfortunate types who bought the poverty pack versions. ( not sure if "poverty pack" translates into American but I think it's a much more descriptive term than "totally unloaded") Are you bringing it to Expo? I would like to leave some...

At the transmission shop. Truck has the wiring harness out sitting on the bench getting a few new cables put in. Hopefully only another couple of hours. Here is the culprit. Scored and cracked face.

Actually if you look behind the panel in front of the passenger there is a TCM that lists the CAI (calibration code). The only 2 differences transmission wise is the 8.3 and air brakes v my 5.9 and hydraulic brakes. The brakes matter because of the ABS setting and the engine matters depending on...

I don't recall if it was yours or MNTAL's thread I posted about the radio. From the depths of my decrepit memory one of you guys posted about taking a radio to fit when they picked up the rig. My advice was don't bother take noise cancelling headphones instead. But since I would like to be able...

Sound proofing Since I now find myself with a few minutes spare I was checking out getting some stuff for other projects the truck needs. The standard FL cabs are noisy. But with a bit of google foo I found a company that sells precut and shaped kits for our trucks. Pricing is sort of ouch but...

Looks good from 10' away but any closer and you notice the defects.