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Old 09-12-2008, 01:04 PM   #15
Full Timers/Diesel power.
 
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1983 31' Airstream310
Cactus Hug , Arizona
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As I said before the bombs started dropping, the supplied transmission on the mo/hos
is hell for stout, that being said, the shift points were never right..even when I installed
a U.S. Gear overdrive. When it came time for a re-build (one never plans that!), I was
lucky to find a real transmission guy in Idaho who hot-rodded the trans with a lot of
Allison parts. Bingo! Shift points correct, smooth as all get out. I never had the passing
gear at the right point (like coming off a stop sign with a uphill pull), do now.
It is spendy to convert to aftermarket overdrives, but this is what the stock diesels
look like.
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Old 09-13-2008, 11:03 AM   #16
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Quote:
Originally Posted by mustang View Post
Any good tranny shop can hook you up with an after market on board computer. BD deisel makes one for about $325.00
I'll look into what BD has to offer.


Quote:
I am personally going to put a s 10 (T5) tranny behind my flathead 6. Unless I decide to sell it first (41 plymouth)
What is your flathead in? I'm in the process of restoring a 51 Dodge 1/2 ton pickup with the original 218 flathead 6. I'm doing one small upgrade by switching to dual carbs and dual exhaust. With all the Triumphs we have I just wasn't happy with one carburetor .

Quote:
As far as the switch goes any tranny shop can d that also, or anbody that works on trannys. Really Easy
I'm not to concerned about the switch, that part I can handle no problem. Where to locate the switch is a different story!

Thanks!

Brad

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Old 09-13-2008, 12:26 PM   #17
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2008 34' Classic
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Hi Gary

I remember when those motorhomes were new they changed to Allison transmissions because the 475 had a hard time handling all the torque of the Diesel. Another thing they did was install an aftermarket torque convertor with a much lower stall speed to be able to use the torque at lower RPM.

If you do the electronic transmission which is likely the best route you also need a little motor that hooks to it to drive the speedometer.

Andy
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Old 09-13-2008, 12:30 PM   #18
Full Timers/Diesel power.
 
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1983 31' Airstream310
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Originally Posted by Andrew T View Post
I remember when those motorhomes were new they changed to Allison transmissions because the 475 had a hard time handling all the torque of the Diesel. Another thing they did was install an aftermarket torque convertor with a much lower stall speed to be able to use the torque at lower RPM.Andy
Any idea what year that was?
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Old 09-13-2008, 12:39 PM   #19
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Hi Mike

I know the first Allison units we sold were 1985 models but I think the option was available in 1984. I don't think they ever put them in 310's due to the front axle capacity. The Allison was bullet proof but the shifts were pretty rough and I don't think they had a torque convertor lock up but then again the torque convertor did not have a lot of slip in it either.

Andy
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Old 09-13-2008, 12:50 PM   #20
Full Timers/Diesel power.
 
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1983 31' Airstream310
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Interesting, so only the 345s got the Allison?
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Old 09-13-2008, 02:56 PM   #21
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Hi Mike

325's also got it.

Andy
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Old 09-13-2008, 03:02 PM   #22
Full Timers/Diesel power.
 
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Thanks, Andy, we don't see many 325s on the road (read, we don't see many mo/hos,period.)
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Old 09-13-2008, 03:45 PM   #23
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Yes I know what you mean. Five of us travelled together the the PEI Rally. One unit was a cherry 1991 350. It attracts a lot of attention, surprizing how many people thought it was new even sitting next to the new 34 that I was towing.

I was towing on this trip with a Pleasureway Sprinter van conversion. If you were trailing even a small cube van or a box type class C it would get buffeted around considerably. However I followed the 350 for several hundred miles and not a thing. Whether intentionally or by accident they had the Classic Motorhome aerodynamics right.

Do you have a turbo on your 310?

Andy
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Old 09-13-2008, 04:12 PM   #24
Full Timers/Diesel power.
 
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1983 31' Airstream310
Cactus Hug , Arizona
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Quote:
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Do you have a turbo on your 310? Andy
"Bess" has just over 200K, yes turbo. We're on our second turbo. What I've
found, at huge expense, but correct , is when the turbo blows, pull the top
end, do injectors, have pump and pressure regulator checked, take the head
in for checking. If you've taken good care of that engine, the jugs should look
like you could eat off them. Plus, PLUS! It makes taking the turbo out very
easy, sort of. When you take the pump in to have them "run the rack", let them
know you are turbo-charged, the factory specs on the pump don't allow for turbo.
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