WELCOME TO RIVER DAVES PLACE

New stuff is cool but old stuff is cooler

RiverDave

In it to win it
Joined
Sep 13, 2007
Messages
126,190
Reaction score
164,401
So much want..

1973 GMC Motorhome, Palm Beach Edition
Built from 1973-1978. The motorhome had a front-wheel-drive transaxle, which GM called the Unitized Power Package, originally used in the Oldsmobile Toronado and Cadillac Eldorado with an Oldsmobile 455 cu in (7.5 L) V8 from the Toronado. In mid-1977 the engine was downsized to a 403 cu in (6.6 L) V8. (At the time, the Buick Riviera, which shared most of the same components, and used the same E-body platform, as the Toronado and Eldorado until its 1977 downsizing, was still using the conventional rear-wheel-drive layout.) Both used the GM-designated Turbo-Hydramatic 425 automatic transmission, with a wide roller chain drive to connect the output of the longitudinally-oriented engine to the transmission. The final drive was connected directly to the transmission, and power was fed to the front wheels using half-shafts, one of which ran under the front portion of the engine. The engine was fueled with regular gasoline stored in two 25-US-gallon (95 L) tanks.
everyone

IMG_3029.jpeg
IMG_3030.jpeg
IMG_3031.jpeg
IMG_3032.jpeg
IMG_3033.jpeg
IMG_3034.jpeg
 

RiverDave

In it to win it
Joined
Sep 13, 2007
Messages
126,190
Reaction score
164,401
Those have a cult following.
I know where a clean one is at if you are interested.

No I gotta stick with the new stuff unfortunately.. but I love looking at these and others..

RD
 

575cat

Well-Known Member
Joined
Mar 26, 2012
Messages
878
Reaction score
527
they were close but not , wheel bearings were bigger , ball joints were different and , I remember working on those they would beet the hell out of front end,s , also building exhaust for them , oh and the air ride for the rear what a mess .
 

Tank

Well-Known Member
Joined
Jul 12, 2008
Messages
20,965
Reaction score
49,876
They do a run here in Ventura once a year with all of those. They are old school cool for sure.

Avacado / baby shit green appliances and green plaid?! Where do I sign up!?! 😁😁
 

JL95

Well-Known Member
Joined
Dec 21, 2021
Messages
792
Reaction score
1,744
There used to be a yard full of them in pomona/montclair you could see from the metrolink.

The one that GKFinishline did was pretty neat. rip
 

dread Pirate

Well-Known Member
Joined
Oct 22, 2010
Messages
6,980
Reaction score
11,196
They do a run here in Ventura once a year with all of those. They are old school cool for sure.

Avacado / baby shit green appliances and green plaid?! Where do I sign up!?! 😁😁

They come through here too.

On another note. They may have been the test subject for DEF. 🤣

 

Captain Dan

Well-Known Member
Joined
Dec 19, 2007
Messages
628
Reaction score
653
455 CI motor with (2) 25 gallon tanks? With any appreciable gradient, you might have your foot to the floor and need to research spacing of fuel stops before hitting the road.
 

Rajobigguy

Well-Known Member
Joined
Aug 21, 2015
Messages
4,901
Reaction score
10,803
With a few modern upgrades/retrofits those are pretty bad ass campers. Everything that was a shortcoming on them has a fix for it today. They can be great for a couple or maybe a couple with 1or two small kids but anything more than that and they start feeling pretty small. Of course the other downside that has been mentioned is that many resorts don’t allow older vehicles.
 

jetboatperformance

Well-Known Member
Joined
Jan 1, 2008
Messages
8,537
Reaction score
18,622
Plus Because of the "venerable" Olds 455 (and its inherent oiling issues) They went thru engines faster than 21 Tahiti day cruiser with a Jacuzzi YJ (driven by a 16 year old) . Same basic engine simply used s different style oil pan which still wasnt enough capacity
 

jetboatperformance

Well-Known Member
Joined
Jan 1, 2008
Messages
8,537
Reaction score
18,622
Toronado story (thread jack) When I was a Kid I worked for Olds Cadillac dealer , was sent to Bakersfield on a dealer trade to Get a Black on Black on black beautiful new Tornado , took my Buddys Girl for company anyhow we got a 12 Pack and coming down the steep ass Hill before the James Dean memorial I pegged the speedo around 120 140 ... Oh the crazy shit we used to do ....
 

LazyLavey

Well-Known Member
Joined
Jan 20, 2017
Messages
6,544
Reaction score
10,731
When I was in high school I worked at a motorhome dealer. We sold those and Revcons and some cheesy tin sided units.

The GMC was sure bitchen
 

Sharky

Well-Known Member
Joined
Jan 11, 2023
Messages
1,653
Reaction score
6,098
Actually a very nice MH for its era. Drove and handled like a big Park Avenue Buick. Put the Dodge M300 & 400 Chassis and Chevy P32 chassis to shame.

The rear suspension was air controlled with an optical sensor for ride height. Repaired several back in the day for air leaks. Plain old 1/4 plastic air lines (lots of them) and brass fittings with ferrules.

Those are what normally leaked.

Replaced a lot of dry rotted fuel lines between the two fuel tanks as well.
 

LazyLavey

Well-Known Member
Joined
Jan 20, 2017
Messages
6,544
Reaction score
10,731
The GMC stopped real well but the Revcon was a bitch to stop.. Interesting that they both were FWD....
 

sprintcvx

Well-Known Member
Joined
Sep 5, 2012
Messages
6,174
Reaction score
25,317
I remember a show where Counts Kustoms redid one of those?
 

Rajobigguy

Well-Known Member
Joined
Aug 21, 2015
Messages
4,901
Reaction score
10,803
But not allowed in the “resort parks” because it’s older than 10 years. 😱
Most parks will make an exception if you call in advance and explain that it is a fully restored classic. They will probably ask you to submit pics. It can be a pain but usually they will agree if the rig is in exceptional condition.
 

thedan

Well-Known Member
Joined
Sep 18, 2010
Messages
492
Reaction score
507
Went to Glamis with an old timer who had sold his due to his wife wanting a newer RV. He was pissed because he said the old one was great driving in the sand and he didn’t think he could get it stuck in the washes. Don’t know how true that story was, but he swore by it.
 

Gelcoater

Well-Known Member
Joined
Sep 26, 2009
Messages
22,370
Reaction score
39,073
Those Toronado power train/transaxles were a hatefull PITA
😂
Went to HS and still good friends with a guy that had a 66 Toronado, he was brought home from the hospital in it after he was born.
Thing was a hoot, and nicknamed “The Beast” 😂

So much want..

1973 GMC Motorhome, Palm Beach Edition
Built from 1973-1978. The motorhome had a front-wheel-drive transaxle, which GM called the Unitized Power Package, originally used in the Oldsmobile Toronado and Cadillac Eldorado with an Oldsmobile 455 cu in (7.5 L) V8 from the Toronado. In mid-1977 the engine was downsized to a 403 cu in (6.6 L) V8. (At the time, the Buick Riviera, which shared most of the same components, and used the same E-body platform, as the Toronado and Eldorado until its 1977 downsizing, was still using the conventional rear-wheel-drive layout.) Both used the GM-designated Turbo-Hydramatic 425 automatic transmission, with a wide roller chain drive to connect the output of the longitudinally-oriented engine to the transmission. The final drive was connected directly to the transmission, and power was fed to the front wheels using half-shafts, one of which ran under the front portion of the engine. The engine was fueled with regular gasoline stored in two 25-US-gallon (95 L) tanks.
everyone

View attachment 1413271 View attachment 1413272 View attachment 1413273 View attachment 1413274 View attachment 1413275 View attachment 1413276

Years ago after my wife’s mom passed away my FIL marries a gal that had one of these.
Not quite as nice as the one in your post but not in bad shape.
They used it, put some money into a few things and traveled quite a bit in it for a time.
Biggest complaint about it was it was Very! thirsty😂😂
 

RogerThat99

Parker Is Now OPEN
Joined
Sep 13, 2010
Messages
12,198
Reaction score
8,500
I had a restored one of these GMC Moho's camped near me recently. I liked them as a kid. Then the movie Stripes came out. LOL
 

Bigbore500r

Well-Known Member
Joined
Apr 28, 2014
Messages
18,180
Reaction score
38,051
So much want..

1973 GMC Motorhome, Palm Beach Edition
Built from 1973-1978. The motorhome had a front-wheel-drive transaxle, which GM called the Unitized Power Package, originally used in the Oldsmobile Toronado and Cadillac Eldorado with an Oldsmobile 455 cu in (7.5 L) V8 from the Toronado. In mid-1977 the engine was downsized to a 403 cu in (6.6 L) V8. (At the time, the Buick Riviera, which shared most of the same components, and used the same E-body platform, as the Toronado and Eldorado until its 1977 downsizing, was still using the conventional rear-wheel-drive layout.) Both used the GM-designated Turbo-Hydramatic 425 automatic transmission, with a wide roller chain drive to connect the output of the longitudinally-oriented engine to the transmission. The final drive was connected directly to the transmission, and power was fed to the front wheels using half-shafts, one of which ran under the front portion of the engine. The engine was fueled with regular gasoline stored in two 25-US-gallon (95 L) tanks.
everyone

View attachment 1413271 View attachment 1413272 View attachment 1413273 View attachment 1413274 View attachment 1413275 View attachment 1413276

1723044232687.png
 

lbhsbz

Putting on the brakes
Joined
Jan 11, 2010
Messages
13,016
Reaction score
33,473
My Dad has one...his is a '78 w/ the 403 olds engine. Its cool, but it's a pain in the ass. Very few people work on em.

He went to a rally a few months ago at Puddingstone lake...along with a vintage trailer rally. It was cool.

There's another rally coming up in Buellton in a couple months if you wanna check out some real nice ones.
 

FROGMAN524

Well-Known Member
Joined
Mar 16, 2013
Messages
5,705
Reaction score
10,454
My grandfather had one of those 70s GMCs with the Olds 455. He blew the motor coming back from Yosemite I think and had to rebuild it, of course, being an engineer for Lockheed Martin, he rebuilt it with some extra pep. After he died, my grandmother sold it cheap, and I never saw it again unfortunately.
 

That Guy

Rack em'
Joined
Sep 24, 2007
Messages
3,297
Reaction score
1,367
A few years back there was a meet up with a huge group of these in the Havasu Marina parking lot. Not sure if it is an annual event or not, but I kicked myself that we didn't stop and take a look. Some were completely restored and looked awesome.
 

JDKRXW

Well-Known Member
Joined
Apr 24, 2008
Messages
3,043
Reaction score
4,144
Last edited:

bocco

Well-Known Member
Joined
Mar 8, 2008
Messages
2,253
Reaction score
2,573
At one time I had 71 Eldo convertible. One of the front wheel bearings went out and spun in the front hub. The bearings are not servicable, I had pull both steering knuckles and took them to a guy in Fremont, CA. He specialized in restoring those Mohos. He pressed out the old bearings then he added Zirk fittings before pressing in the new bearings so they could be greased.

The cool part of his story was that he upgraded his moho to a 540 Cad motor instead of the oldsmobile. Said it was much more fun to drive.
 

EmpirE231

Well-Known Member
Joined
Jan 10, 2008
Messages
4,849
Reaction score
10,008
No reason why that should be running - the most expensive part of them are the rear tires - and those ones look good. 👍
Was told it blew a head gasket and then parked for 10 years... Oil still looks good, so hopefully just a head gasket, plugs and a new battery will do it. Just need to find the time to do it one day.
 

76sanger

Well-Known Member
Joined
Apr 1, 2020
Messages
679
Reaction score
1,681
Reminds of one of the greatest and stupidest movies ever......Stripes! Because, THATS THE FACT JACK!
 

SoCalDave

Well-Known Member
Joined
Jul 1, 2011
Messages
13,302
Reaction score
30,892
My uncle had a 73 that he and his wife took all over North America. His youngest son still has it.
 

lbhsbz

Putting on the brakes
Joined
Jan 11, 2010
Messages
13,016
Reaction score
33,473
My Grandparents had a Revcon which is on that same platform. Airbags and all.

Looked exactly like this one. I dont recall he ever complained about reliability. They traveled the Alaskan highway once in it.


View attachment 1413760
Revcons used the same olds toronado/Cadillac Eldorado drivetrain until they quit making it in 78 or 79, then Revcon went to a 454/TH400 w/ a transfer case using on the front output and some sort of front axle....that's when the problems started, because there's not a really a good way to do that.
 

Boat211

Well-Known Member
Joined
Dec 20, 2007
Messages
1,723
Reaction score
1,027
I rode in one of those from California to Akron Ohio and back in 1979 for Soap Box Derby.
 
Top