Junkyard Find: 1967 Chevrolet P20 Adventure Line Motorhome

Murilee Martin
by Murilee Martin

Back in the 1960s and 1970s, quite a few Midwestern RV manufacturers would take new Chevrolet Step-Vans and build them into motorhomes. Most spent productive decades ferrying retirees between Michigan and Florida, then settled into long-term retirement in driveways and dirt lots, serving as homes for many generations of raccoons, possums, and wasps.

Here’s a Kansas-built P20-series RV in the San Francisco Bay Area, giving up some of its components while awaiting the cold steel jaws of The Crusher.

I couldn’t find much information online about the RVs made by the Adventure Line Manufacturing Company in Parsons, Kansas, though there is a bit of firearms-forum discussion about the AR-15 magazines made by the company a few years after building this vehicle.

RVs are always the most disgusting vehicles found in the inventory of self-service wrecking yards, invariably packed with hantavirus-saturated rodent detritus and bottles full of crank piss (or worse). I have spent far too much time in junked RVs, ever since I made the stupid decision to heat my garage with a Winnebago propane furnace.

The engine is gone, but it would have been a pushrod straight-six ranging in displacement from 194 to 292 cubic inches with an output between 120 to 170 horsepower. That’s right, this massive steel box got its motivation from an engine making horsepower very similar to that of a 2017 Corolla (though the 292 did put out 275 lb-ft of torque). Think about that next time you complain about modern econoboxes being underpowered.

I couldn’t make out the price on this tattered FOR SALE sign, but I’m sure it was nowhere near low enough.

Coming down the hill from Donner Summit with these brakes must have been exciting.

Made when men were men and California families vacationed in hoppy, clattery, leaf-sprung delivery vans.








Murilee Martin
Murilee Martin

Murilee Martin is the pen name of Phil Greden, a writer who has lived in Minnesota, California, Georgia and (now) Colorado. He has toiled at copywriting, technical writing, junkmail writing, fiction writing and now automotive writing. He has owned many terrible vehicles and some good ones. He spends a great deal of time in self-service junkyards. These days, he writes for publications including Autoweek, Autoblog, Hagerty, The Truth About Cars and Capital One.

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  • Triman95 Triman95 on Jul 14, 2023

    So happy to hear about your find! I'd love to have one myself. For pics and info, I'd have to talk to my parents, aunt and uncle and see if they have any pics or info. I am happy to do this, but it may take a while. You might post an ad in The Parsons Sun and see if any ALMC employees are still around. They may have some information for you.

  • Penny Walters Penny Walters on Jul 28, 2023

    This Chevrolet P 20 adventure line is the closest we could find. I am trying to figure out what this motorhome was that we had when I was a kid. Would love to find one and restore it!

  • ToolGuy First picture: I realize that opinions vary on the height of modern trucks, but that entry door on the building is 80 inches tall and hits just below the headlights. Does anyone really believe this is reasonable?Second picture: I do not believe that is a good parking spot to be able to access the bed storage. More specifically, how do you plan to unload topsoil with the truck parked like that? Maybe you kids are taller than me.
  • ToolGuy The other day I attempted to check the engine oil in one of my old embarrassing vehicles and I guess the red shop towel I used wasn't genuine Snap-on (lots of counterfeits floating around) plus my driveway isn't completely level and long story short, the engine seized 3 minutes later.No more used cars for me, and nothing but dealer service from here on in (the journalists were right).
  • Doughboy Wow, Merc knocks it out of the park with their naming convention… again. /s
  • Doughboy I’ve seen car bras before, but never car beards. ZZ Top would be proud.
  • Bkojote Allright, actual person who knows trucks here, the article gets it a bit wrong.First off, the Maverick is not at all comparable to a Tacoma just because they're both Hybrids. Or lemme be blunt, the butch-est non-hybrid Maverick Tremor is suitable for 2/10 difficulty trails, a Trailhunter is for about 5/10 or maybe 6/10, just about the upper end of any stock vehicle you're buying from the factory. Aside from a Sasquatch Bronco or Rubicon Jeep Wrangler you're looking at something you're towing back if you want more capability (or perhaps something you /wish/ you were towing back.)Now, where the real world difference should play out is on the trail, where a lot of low speed crawling usually saps efficiency, especially when loaded to the gills. Real world MPG from a 4Runner is about 12-13mpg, So if this loaded-with-overlander-catalog Trailhunter is still pulling in the 20's - or even 18-19, that's a massive improvement.
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