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Old 05-05-2017, 06:42 AM   #1
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1977 28' Argosy 28
Baytown , Texas
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New owner of a 77 Argosy 28 motor home

I have been eyeballing these for a while and picked one up yesterday. I have to get it home to the shop to work on but currently it needs a key, some tires, and a new flywheel(chipped ring gear). Otherwise it is pretty clean.
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Old 05-05-2017, 07:34 AM   #2
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1975 20' Argosy 20
Chestfield , Kent
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Welcome to the madhouse!

Lots of knowledge, and useful tips here. First up don't forget to change at the fuel lines before you drive anywhere. Modern fuel eats old rubber and a few of these old buses go up in flames each year due to fuel fires. Next is brakes, steering, suspension, followed by drive shaft couplings (they rust up when not used and rip themselves apart pretty quickly when they then move).

Biggest tip is to enjoy it whilst you work on it - it will try your patience and your wallet so make sure you are getting something back in return!
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Old 05-05-2017, 08:58 AM   #3
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1984 27' Airstream 270
Scotia , New York
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I have owned two 77 Argosys, a 20 and 24 footer.
Nice machines but be ready to get you hands dirty, up to your elbows.
It is worth it.
One thing to do, when you have it operational, do a MPG test and if it is less than 7, you may want to get the carb rebuilt (Professionally) Depending on your miles per year, you can pay for a carb rebuild fairly quickly.
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Old 05-06-2017, 06:01 PM   #4
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1977 28' Argosy 28
Baytown , Texas
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Quote:
Originally Posted by WayneG View Post
I have owned two 77 Argosys, a 20 and 24 footer.
Nice machines but be ready to get you hands dirty, up to your elbows.
It is worth it.
One thing to do, when you have it operational, do a MPG test and if it is less than 7, you may want to get the carb rebuilt (Professionally) Depending on your miles per year, you can pay for a carb rebuild fairly quickly.
I'm a science teacher but spend most of my free time wrenching. I'm going to buy some tires, rebuild the carb, and run it off a tank in the cab until I get home. Once there all the hoses, belts and fluids will get changed. I'm figuring an engine swap is in the not too distant future.
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Old 05-07-2017, 03:55 AM   #5
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1984 27' Airstream 270
Scotia , New York
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Originally Posted by Jjona5 View Post
I'm a science teacher but spend most of my free time wrenching. I'm going to buy some tires, rebuild the carb, and run it off a tank in the cab until I get home. Once there all the hoses, belts and fluids will get changed. I'm figuring an engine swap is in the not too distant future.
Working as a engineer (Or high priced handyman) for a particle accelerator lab in a university has its advantages of a full machine shop, welding and electronics tools.
I dont think I would have been able to keep mine going without it.
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Old 05-07-2017, 05:27 AM   #6
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Hillsburgh , Ontario
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Welcome to a pretty small clan of Argosy owners. Please feel free to come over to the Argosy/ Classic motorhome section to post pics and meet the inmates.

As for engine swaps; if not diesel, may I suggest......

http://www.airforums.com/forums/f311...-a-163471.html

Cheers
Tony
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Old 05-07-2017, 08:23 AM   #7
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1977 28' Argosy 28
Baytown , Texas
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Originally Posted by Isuzusweet View Post
Welcome to a pretty small clan of Argosy owners. Please feel free to come over to the Argosy/ Classic motorhome section to post pics and meet the inmates.

As for engine swaps; if not diesel, may I suggest......

http://www.airforums.com/forums/f311...-a-163471.html

Cheers
Tony
It's funny that you say that. That was the engine I landed on as a more economical upfront cost engine. They are rather cheap around here and with the allison transmission it is a beast also. What kind of fuel economy to people get with it? 8-10?
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Old 05-07-2017, 09:02 AM   #8
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It's funny that you say that. That was the engine I landed on as a more economical upfront cost engine. They are rather cheap around here and with the allison transmission it is a beast also. What kind of fuel economy to people get with it? 8-10?
The poster in the thread was getting 9-10 mpg @72 mph in a 310.......Now 72 mph is really pushing some serious wind in a 13,500+ Classic Airstream, so if you kept your speed down a tad in your 11,000 lb Argosy, to say 55-60 mph, I'd imagine 10+ wouldn't be out of line on level terrain.

The thing about the 8.1L, is that GM's engine quality wasn't up to snuff and some of these engines were prone to piston slap, bearings, crank position sensors and oil consumption. If I were to do it I'd rebuild the engine first (unless you come across a really good one) with quality parts or go 502 crate. Getting these engines in and out is a pain, so spending money up front to do it right the first time will save you money in the long run.

Cheers
Tony
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Old 05-07-2017, 09:44 AM   #9
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1984 27' Airstream 270
Scotia , New York
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I find 10 MPG with a gas engine in a 6-7 ton motorhome hard to believe.
My original 20' Argosy, unloaded, got close to that but when I fill it up it was 8 at best.
My 84 270 modified with a ECM and TBI fuel injection, is lucky if it gets 8MPG doing 60 MPH, but I am using a stock trany and 454, fully loaded and towing my Polaris UTV with some good hills on my travels.
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Old 05-07-2017, 10:58 AM   #10
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I find 10 MPG with a gas engine in a 6-7 ton motorhome hard to believe.
My original 20' Argosy, unloaded, got close to that but when I fill it up it was 8 at best.
My 84 270 modified with a ECM and TBI fuel injection, is lucky if it gets 8MPG doing 60 MPH, but I am using a stock trany and 454, fully loaded and towing my Polaris UTV with some good hills on my travels.
While I don't doubt most people would find it hard to believe, Modified13 did state for the record that his mileage certainly increased. A few factors to consider when I made my estimate at 10 mpg.

The 8.1 in great shape and tuned for a moho is going to be much more fuel efficient than a 454, with greater power and more torque to get the moho up to cruise speed faster; pair that to a 5 sp Allison with more gears to stay in the engines economical power band, smart defensive driving and a feather foot; I don't see why 10 mpg shouldn't be reachable on level terrain.

Cheers
Tony

BTW I get considerably more than 10 mpg with my 310.
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Old 05-07-2017, 11:45 AM   #11
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Originally Posted by Isuzusweet View Post
While I don't doubt most people would find it hard to believe, Modified13 did state for the record that his mileage certainly increased. A few factors to consider when I made my estimate at 10 mpg.

The 8.1 in great shape and tuned for a moho is going to be much more fuel efficient than a 454, with greater power and more torque to get the moho up to cruise speed faster; pair that to a 5 sp Allison with more gears to stay in the engines economical power band, smart defensive driving and a feather foot; I don't see why 10 mpg shouldn't be reachable on level terrain.

Cheers
Tony

BTW I get considerably more than 10 mpg with my 310.
What are you running to get more than 10? The engines I'm guessing go in from the bottom? This is my first rv
Quote:
Originally Posted by Jjona5 View Post
I'm a science teacher but spend most of my free time wrenching. I'm going to buy some tires, rebuild the carb, and run it off a tank in the cab until I get home. Once there all the hoses, belts and fluids will get changed. I'm figuring an engine swap is in the not too distant future.
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Old 05-08-2017, 04:52 PM   #12
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What are you running to get more than 10? The engines I'm guessing go in from the bottom? This is my first rv
Sorry mate, mine is the 5.8l Isuzu turbo diesel. Weighs almost 1100 lbs, virtually indestructible, runs like a loud Swiss digital and economical as hell; except for oil changes. A $15,000 option in 1983.

The motors do come out of the front but check with Brad as Argosy front grills are a bit different than AS grills in certain years.

Cheers
Tony
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Old 05-12-2017, 08:14 AM   #13
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Well starting in June we are going to sock away about 300 a month towards the engine swap and misc costs. I think I might go duramax with allison transmission. I can do all the work myself minus modifying the driveshaft but I have a shop I use for those. I figure by 2019 it'll be a diesel. I'm not normally a duramax person(Ford/International for trucks in my world) but I think the duramax is a nice blend of power and economy.
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