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03-12-2015, 12:23 PM
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#1
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4 Rivet Member
1978 28' Argosy 28
Victor
, New York
Join Date: Sep 2012
Posts: 408
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Argosy Drivetrain Swap
I picked up a donor vehicle so I can swap its drivetrain into my Argosy. Its not a major swap, still using the good ole 454 but I will finally get overdrive. I found a 1992 Chevy 3500 dually with a gentle 120k. It has the 454 with TBI and a 4l80e transmission. Runs good, no smoke, shifts smooth. With a little rebuilding and some upgrades I should have it ready for the fall/winter of this year.
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03-13-2015, 05:55 PM
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#2
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Keen amature
1975 20' Argosy 20
Chestfield
, Kent
Join Date: Mar 2014
Posts: 3,533
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Hope it goes well for you, the Argosy motors are pretty 'embedded' and I think will take some effort to get out.
Are you planning to come out the front, or get it up on a ramp so it can come out from below?
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03-16-2015, 05:23 AM
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#3
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4 Rivet Member
1978 28' Argosy 28
Victor
, New York
Join Date: Sep 2012
Posts: 408
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I plan on going out the front. A neighbor has a fork lift so that should make things a bit easier.
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03-16-2015, 11:11 AM
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#4
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Keen amature
1975 20' Argosy 20
Chestfield
, Kent
Join Date: Mar 2014
Posts: 3,533
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I think you have the early type grille, which is a pain to get off (if it is like mine, they had to drill out the rivets all the way around) but once it is off there is a lot of space, to get to the radiator etc.
I only have the 350 but can take photos of what is involved in removing the grille if it would be helpful - mine is still off.
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03-18-2015, 07:41 AM
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#5
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4 Rivet Member
1978 28' Argosy 28
Victor
, New York
Join Date: Sep 2012
Posts: 408
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pictures would be very helpful. I have a pretty good idea as to what needs to happen to get it out but extra help is always better than no help!
thank you
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03-29-2015, 01:36 PM
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#6
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Keen amature
1975 20' Argosy 20
Chestfield
, Kent
Join Date: Mar 2014
Posts: 3,533
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As you probably know the early type grille is riveted in, so as well as removing the access door above the grille, all the rivets had to come out.
Then the plates holding the headllights on both sides had to come out (again) riveted. The radiator has to come out (mine has been recored).
The oil cooler and A/C condense can stay contented and be swung out of the way....even then the engine is a long way back.
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03-29-2015, 04:32 PM
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#7
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Rivet Master
1982 31' Airstream 310
champaign
, Illinois
Join Date: Oct 2012
Posts: 4,071
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There is a lot going on from the grill to the motor. I had to break mine down all the way to get to the harmonic balancer. I did the grunt work of disassembly and putting it all back in place but left the motor work to the mechanic. I "think" it was worth it, there were quite a few hours in getting back that far. No rivets on the 310 but some real fun nuts n bolts to get to.....not. My hands looked like I had tried to bathe a pole cat when I got done. All good though getting to know the rig more. The torque spec for the retaining nut on the harmonic balancer was 400+ ft lbs. i had never seen a torque wrench that big in my life. It had to be well over 3.5ft long.
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03-29-2015, 05:04 PM
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#8
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Rivet Master
1972 31' Sovereign
1975 31' Excella 500
Currently Looking...
Benton
, Arkansas
Join Date: Mar 2013
Posts: 5,868
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400 plus foot pounds means I am simply going to put my impact wrench on it and hammer it pretty good...
1/2 Ton 4WD Truck, 72 Sovereign Hensley Arrow
__________________
The fact that I am opinionated does not presuppose that I am wrong......
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03-30-2015, 09:42 AM
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#9
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4 Rivet Member
1978 28' Argosy 28
Victor
, New York
Join Date: Sep 2012
Posts: 408
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Thanks for the pictures, it looks like it will be a lot of 'fun'! As soon as I am done with my driveway restoration of my Dodge I will start tackling this!
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05-13-2015, 12:04 PM
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#10
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Rivet Master
1974 20' Argosy 20
Richmond
, Kentucky
Join Date: Jan 2003
Posts: 9,115
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Matt, the engine removal and re-install isn't all that difficult. It's all the prep work to get to that point that's the killer!
I've got a 4L80E transmission for my Argosy that I hope to install someday but I'm going to wait until I at least have it road worthy. I've already got one to many projects to deal with without adding another.
I am definitely looking forward to your in progress pictures!
Brad
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1975 24' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels & windows left to sell)
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05-13-2015, 02:08 PM
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#11
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Keen amature
1975 20' Argosy 20
Chestfield
, Kent
Join Date: Mar 2014
Posts: 3,533
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My mind has been churning on this (never a good thing); what is involved in a swap to a 4L80E trans (my current 350 seems good)? I was under the impression it required some additional electrical work? And what is the advantage vs installing a GV overdrive?
If swapping a drive train why not go the whole hog and install a P7100 (non-computerized) 6BT/NV4500 combo?
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05-13-2015, 03:13 PM
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#12
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Rivet Master
1974 20' Argosy 20
Richmond
, Kentucky
Join Date: Jan 2003
Posts: 9,115
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Quote:
Originally Posted by martin300662
My mind has been churning on this (never a good thing); what is involved in a swap to a 4L80E trans (my current 350 seems good)? I was under the impression it required some additional electrical work? And what is the advantage vs installing a GV overdrive?
If swapping a drive train why not go the whole hog and install a P7100 (non-computerized) 6BT/NV4500 combo?
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Martin,
If you haven't seen this thread turbo 400 4l80e swap browse through it and see if it doesn't answer most of your questions.
You will need to do some additional electrical work and there are various ways of accomplishing that. I really think our little 20' Argosies would really benefit from having some sort of overdrive mainly from the mpg perspective. The major mechanical change are shortening the drive shaft, swapping transmission mounts and method of shifting.
I'm interested in the 4L80E swap as I already have the transmission sitting on the shop floor. A gear vendors is nice especially if you have long term plans that can justify the payback.
Brad
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1975 24' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels & windows left to sell)
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05-13-2015, 06:06 PM
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#13
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Keen amature
1975 20' Argosy 20
Chestfield
, Kent
Join Date: Mar 2014
Posts: 3,533
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Thanks Brad
Reading through all the posts on the link (and the other posts reference in the link), made me categorize as "complicated, don't go there unless you have to"!
Nothing better than a dose of realism to stop my brain going off and embarking on something crazy!
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05-14-2015, 05:30 AM
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#14
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4 Rivet Member
1978 28' Argosy 28
Victor
, New York
Join Date: Sep 2012
Posts: 408
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I think I am going to go there because I can! Things have been moving slowly at my house so I am not sure if I will get to it this winter or not. What I am throwing around is just swapping out the transmission instead of the whole engine. My engine has 25k miles on it and runs GREAT. The only difference between the one in the truck and the moho is about 100k miles and TBI.
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05-14-2015, 06:53 AM
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#15
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Keen amature
1975 20' Argosy 20
Chestfield
, Kent
Join Date: Mar 2014
Posts: 3,533
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I guess you are in the best place having a donor to 'steal' any missing wiring, sensors etc.
I may have missed an opportunity a couple of months back as locally there was a late 80's SOB MH built on a P30 with a good 350TBI/4l80e/4WD, the actual MH was wrecked but as a running chassis/donor it would have been great potential donor, I just think if I was to swap it would be an entire drive train and to go diesel.
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05-18-2015, 07:48 AM
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#16
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Rivet Master
1974 20' Argosy 20
Richmond
, Kentucky
Join Date: Jan 2003
Posts: 9,115
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A donor vehicle of the right vintage would definitely make things easier. When I picked up my 4L80E (from a friend) I managed to at least get the computer that goes with it so aside from a wiring harness and adding some sensors I should be ok.
If you're going to spend the money to convert, diesel isn't a bad way to go. If I hadn't had the donor 454/4L80E combo I might have considered diesel but that's water under the bridge at this point.
Brad
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1975 24' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels & windows left to sell)
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