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Old 07-13-2015, 10:16 PM   #15
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1988 34.5' Airstream 345
Lafayette , Louisiana
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Quote:
Originally Posted by 1985 moho View Post
My name is Eray Honeycutt with a 1985 airstream 345. I had the same problems with my 454 Chev. engine, to the point of no return and thousands of dollars spent. for nothing, but being towed again and again.

I had that engine removed, along with its 3 speed transmission, for a 2014 GM E-rod, LS3, with a 6 speed tranny. the drive shaft had to be modified for the new modification. the results, OUTSTANDING in all respects. I can now go up mountains, even while towing, with great ease.

this will last me for all the future years I own the refurbished classic, inside and out.

I have lots of info to share for anyone that would be interested, pictures and all the things that had to be done.
Any help and info would be greatly appreciated. Photos etc. I would like to be In your shoes asap.
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Old 07-13-2015, 10:23 PM   #16
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1988 34.5' Airstream 345
Lafayette , Louisiana
Join Date: Jul 2015
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Quote:
Originally Posted by 1985 moho View Post
My name is Eray Honeycutt with a 1985 airstream 345. I had the same problems with my 454 Chev. engine, to the point of no return and thousands of dollars spent. for nothing, but being towed again and again.

I had that engine removed, along with its 3 speed transmission, for a 2014 GM E-rod, LS3, with a 6 speed tranny. the drive shaft had to be modified for the new modification. the results, OUTSTANDING in all respects. I can now go up mountains, even while towing, with great ease.

this will last me for all the future years I own the refurbished classic, inside and out.

I have lots of info to share for anyone that would be interested, pictures and all the things that had to be done.
for the advice and yes anything you are willing to share would be greatly appreciated. Picturs and any info u think would be helpful.
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Old 07-14-2015, 08:17 AM   #17
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1981 31' Excella II
New Market , Alabama
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Nothing to overhauling a 454. It just takes time and patience and a few hundred dollars in parts. I would have someone pull the pan and check the bearings. Usually bearings are fine unless the oil pressure is low. There are lots of things that can make a knocking noise. A bad fuel pump can make a knocking noise.

Perry
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Old 07-14-2015, 05:27 PM   #18
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1979 28' Airstream Excella 28
Bakersfield , California
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Hi I have a 79 28' MoHo and when I did my redo on the unit I decided to go with the GM Crate motor, 502 HD with elderbrock smog legal intake, yes California makes me smog MoHo, Doug Thourghly Headers. I was going to do a duramax Allison conversion and did buy an engine trans but at the time I could not find anyone to make it run in my rig. If I was going to do it again I would consider doing the Isuzu GM diesel as it bolts up to the 400 Trans. I am where I am now an it runs great,good low in torque, we tow a trailer and no issues. Cruises at 70 all day long. I did install a gear vendor over drive unit, love it in the mountains, almost like a jake brake, but quite. The engine is tough fit just replacing the stock engine, had to remove most everything above the head line. Any questions let me know. Good luck.
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Old 07-14-2015, 08:10 PM   #19
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If I was going to do it again I would consider doing the Isuzu GM diesel as it bolts up to the 400 Trans.

Think I read somewhere in the forum that there were several mods to the 400 to run behind the Isuzu.
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Old 07-15-2015, 06:34 AM   #20
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1988 34.5' Airstream 345
Lafayette , Louisiana
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I would love to be in your shoes. Any info or pictures would be greatly appreciated
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Old 07-15-2015, 06:58 AM   #21
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1988 34.5' Airstream 345
Lafayette , Louisiana
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Please email me any pictures and info on ur project. Jim@jimkeaty.com
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Old 07-15-2015, 10:06 AM   #22
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1979 28' Airstream Excella 28
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I have two MoHos. The 79 is a 28' with 502 GM Crate engine and just acquired a 81 with Isuzu Diesel that I am working on. I am going to sell the Diesel. It will be a good MoHo for someone. It only has 85000 miles on it. I am cleaning up the inside now, it needed some TLC. The outside is very good condition with only one major bonk in the right rear. I am going to remove the panel and work out the metal, I am custom car metal worker with all the tools. The hardest part is just getting the panel off carefully and working the metal on an English wheel/hammer and replacing with Olympic rivets and shave them down. Will be my first panel r/r.Good luck on your engine decision.
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Old 07-15-2015, 12:14 PM   #23
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1981 31' Excella II
New Market , Alabama
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The older 7.3L IDI only put out 175HP which is less than your 454. It was a good engine but getting parts and someone who knows how to fix them is getting harder and harder. Many components on these older diesels don't like the low sulfur fuels that have much less lubricity. This means that already hard to find parts are going to wear out faster. I got rid of one of these a few years back and I am glad I did before it got to be more of a money pit that is already was. Diesel engines are very heavy and require some heavy equipment to just to pull one out. I am talking 1200lbs here as opposed to less than half that for a gas engine.

Perry

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Originally Posted by submariner View Post
if it would be me, i would definitely change to a diesel. I go with a 7.3 diesel from a school bus. stay with the older non power stroke for simplicity. you can find pretty cheap the entire engine with transmission from old school buses. ( we have a place locally that might part out some buses )
alternative i would consider an older 466 international diesel.those are inline 6 and commercial grade engines.. they will last forever.
in regards to your generator, you can either run your gen on propane, leave a small gas tank or change to a diesel gen.

just my 2 cents
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Old 09-22-2015, 12:12 PM   #24
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1987 34.5' Airstream 345
Indianapolis , Indiana
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454 Swap

Would love the info on that conversion. Sounds good if I decide to keep my 345.
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