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Author Topic: Would you call this a sports car?  (Read 1235 times)
Lin
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1965 MC-5a




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« on: May 31, 2010, 06:47:39 PM »

http://palmsprings.craigslist.org/rvs/1723421358.html
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Barn Owl
Roanoke, VA
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PD4106-1063 "Wheezy Bus"




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« Reply #1 on: May 31, 2010, 09:53:01 PM »

I don't think a V730 could handle 450hp. What's the spec?
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L. Christley - W3EYE Amateur Extra
Blue Ridge Mountains, S.W. Virginia
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Have fun, be great, that way you have Great Fun!
Lin
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« Reply #2 on: May 31, 2010, 10:45:32 PM »

Checking online, it seems to be that the 730 is rated for less than 300hp.  Although it is not uncommon for someone selling a bus not really to know what they have, this guy has two buses for sale.  The other one is a 66' MC5a with a Spicer.  It would seem he should know the difference between an 8V71N and an 8V92T.  Is there anyway to up the hp rating on an Allison?

Anyway, I just thought that that kind of horsepower on that light a bus would be quite a performance package.
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TomC
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« Reply #3 on: June 01, 2010, 07:01:09 AM »

The V730 has a low horsepower rating because the main usage of the V730 was for transit buses.  Since the main transmission is basically a HT740 without 1st gear, it can handle the horsepower.  But-the weak spot of any V730 is the angle input gears and especially the quill shaft-a remarkably small splined shaft that connects the engine torque to the transmission.  Good Luck, TomC
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Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.
bevans6
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« Reply #4 on: June 01, 2010, 07:56:34 AM »

Lots of people install things that maybe shouldn't go together, and live happily ever after...  I think that there are two sides to the torque limits (usually a trans is torque limited, not HP limited) and that relates to the resistance from the weight of the vehicle.  You might get away with over-torquing a transmission that is in a quite light vehicle, compared to a vehicle at 80K gross weight.  And you always have your right foot as a torque limiting device...  If you own it, and know that flooring the throttle on starts may cost you a lot of money, you might not do that so often...

I bet there's lots of people with 8V92's and fire-truck spec 8V71T's with Allison 640's behind them that have been happy for years...

Brian
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1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Spicer 8844 4 speed Zen meditation device
Vintage race cars -
1978 Lola T440 Formula Ford
1972 NTM MK-4 B/SR
Lin
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« Reply #5 on: June 01, 2010, 08:35:08 AM »

The sad thing is that that engine in a vehicle that light should have a couple of overdrive gears to give it terrific milage.
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Iceni John
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« Reply #6 on: June 01, 2010, 12:18:15 PM »

If it actually has a 92 in it, let's hope he seriously upgraded the cooling system, especially as he is in Palm Springs!

John
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1990 Crown 2R-40N-552:  6V92TAC, DDEC II, HT740, Jake.      Hecho en Chino.     
Behind the Orange Curtain, SoCal.
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