RAM Promaster Van Conversion

Choosing the best campervan for your needs is the first step in the process of becoming a happy van owner. There are dozens of online resources, reviews, and expert opinions, all with their recommendation on which one you should buy. While I genuinely appreciate others’ opinions, I think there is a lot of value in figuring out what is most important to you, and then making a conclusion on your own. Here is the general process we went through for purchasing our van.

The first order of business was listing our “must haves”:

  1. Tall enough to stand up in (I’m 5’9″ and my wife is 5’4″ so not much of a problem here)
  2. Wide enough to sleep across the van, as opposed to inline with it (this saves a lot of valuable space)
  3. Manageable enough to drive as a daily driver (we would be selling my beloved Tacoma, and I didn’t want to be driving around a tank)
  4. Good value (I realize this can mean different things to different people)

The three main cargo vans that generally make everyone’s list for conversions are the Mercedes Sprinter, Ford Transit, and the RAM Promaster. I wanted to think outside the box a little bit and look at other options as well. The Nissan NV made a quick appearance on our list, but aesthetically we were just not feeling it. As superficial as that was, we just couldn’t do it. If we were going to spend thousands on a vehicle, it had to at least look “OK” to us, so off it went. We also contemplated a pop top for awhile, but then realized we didn’t want to deal with that, as easy as they may be. Making things as easy as possible encourages more adventures, no pop-top. We also briefly looked at the Mitsubishi Fuso. I liked how funky it was, as well as having the option for 4wd and a diesel engine. My dreams of driving a Unimog were starting to become a reality. Unfortunately, we quickly came to the conclusion that this would be a terrible daily driver, no Fuso.

It was back to the conventional campervan conversion options. Diving deeper into the vehicles, it didn’t take long to realize that the Sprinters were going to be way out of our budget. I did search craiglist for about a month looking for deals on used ones, they’re out there, but not worth it in my opinion. They typically had high miles and price tags similar to new Transits and Promasters. No Sprinter.

Now it was down to the Transit and Promaster. Two of our friends own Transits, and one lives in his full time. I’ve spent a couple nights in them and have been on long road trips. They drive great and are pretty darn comfortable. I was pleasantly surprised the first time I jumped behind the wheel. We were pretty set on a Transit actually, but then we started to look at interior and exterior dimensions, comparing them to the Promaster. The Transit comes in three roof heights; low (57″), medium (72″), and high (81.5″). The Promaster comes in two; low (65″) and high (76″). We knew that by building out the interior we would lose a minimum of 2 inches, if not more. Only the high roof Transit and high roof Promaster would allow us the room to stand up. With the Transit having a 81.5″ interior height, we started to question whether that was necessary. We asked ourselves if we really needed those extra 5.5 inches of headroom? Would we rather have a smaller overall vehicle like the Promaster? Comparing the two high roof vans showed that the Promaster actually comes in at a whopping 10 inches shorter overall (exterior height). Maybe that won’t matter to some people, but with one of our main goals being daily drivability, it was a critical piece of information. Continuing to dig deeper we found that the Promaster had an overall boxier profile which would really allow us to take advantage of the interior design. Sleeping sideways would be a nonissue with its 76″ width at waist height.

The final nail in the coffin for the Transit was the price; RAM was running some ridiculous rebates, and the Promaster came out thousands less than a Transit. Promaster for the win!

Meet Gus the Bus!

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4 thoughts on “RAM Promaster Van Conversion

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  1. Are your interior heights listed correctly? On the Sportsmobile site, it lists the interior of the ProMaster Hightop at 6’2″… and the Hightop Transit interior at 6’5″… subtract the insulation and decor affect of at least 2″ and that changes the equation don’t you think? I agree with the wider PM is nicer, but the height is more important when you are taller and your head gets closer to the roof. At 6′, I’d only have 2-3″, not counting fans or A/C? hanging down. I also agree that the shorter PM of 10″ would be nicer, but the height issue returns again… Now if a new PM added a couple more inches to the int height, that would change things.

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    1. Hey Greg,

      Thanks for making me double check my numbers! I believe I have the Promaster height listed correctly though. I just went and measured mine and it came to 73.5 inches, or 6’1½” for the finished height. The finished height includes 1 in. insulation on the floor, plus 1/4 in. plywood, plus the factory floor which is about 3/8 in.. I also have an additional 7/8 in. added to the ceiling from the furring and tongue and groove. I’m guessing the height listed on the Sportsmobile website is the finished height as well. I don’t have an AC unit on mine, but I don’t think that will cut into the head room at all as the unit is housed on the roof of the van. I do have a MaxxFan on mine and it is recessed into the ceiling so it doesn’t cut into the interior height at all. If you take a look at my insulation write-up you can see how this is possible with the ribs in the ceiling. At 6’ the Promaster may be perfect for you!

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  2. Hi there, love your conversion.
    I just received my 2018 Ram Promaster 136 wb High roof after waiting for it for 7 months .
    Anyway, i was trying to remove the factory tie downs. Are they counterclockwise to remove ?
    Also i was using a Torx tool T30 was too small and was rounding out the screw insert, and
    T40 is too big. What am I doing wrong ? And what is the right tool to remove these .
    From your pictures of your tie-downs they look like regular square bolt heads.

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    1. Hi Roy, congrats on the van! Sorry for the very slow reply, we’ve been busy with other projects. Have you tried a T35 bit? If the 30 is too small and the 40 is too big, then I’d guss the 35 should be perfect:)

      Our factory bolts had Torx heads, but the longer replacement bolts were just a standard bolt head.

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