Would you call this a sports car?
 

Would you call this a sports car?

Started by Lin, May 31, 2010, 06:47:39 PM

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Lin

May 31, 2010, 06:47:39 PM
You don't have to believe everything you think.

Barn Owl

#1
May 31, 2010, 09:53:01 PM
I don't think a V730 could handle 450hp. What's the spec?
L. Christley - W3EYE Amateur Extra
Blue Ridge Mountains, S.W. Virginia
It's the education gained, and the ability to apply, and share, what we learn.
Have fun, be great, that way you have Great Fun!

Lin

#2
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.
You don't have to believe everything you think.

TomC

#3
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
Tom & Donna Christman. 1985 Kenworth 40ft Super C with garage. '77 AMGeneral 10240B; 8V-71TATAIC V730.

bevans6

#4
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
1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Allison MT-647
Tatamagouche, Nova Scotia

Lin

#5
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.
You don't have to believe everything you think.

Iceni John

#6
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
1990 Crown 2R-40N-552 (the Super II):  6V92TAC / DDEC II / Jake,  HT740.     Hecho en Chino.
2kW of tiltable solar.
Behind the Orange Curtain, SoCal.
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