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Topic: Allison 4060 vs Allison 4000, Allison 3060 vs Allison 3000? (Read 4273 times) previous topic - next topic

Allison 4060 vs Allison 4000, Allison 3060 vs Allison 3000?

On ads, some listings for RVs list  a Allison 4060 on older models, then Allison 4000 on newer. Same with 3060 and 3000.

 Is there any difference 4060/4000 and 3060/3000?
Dan - Full timing since 2009
2003 U320 40' Tag 2 slide

Re: Allison 4060 vs Allison 4000, Allison 3060 vs Allison 3000?

Reply #1 –
I think we use hem interchangeably now.  The older units had the 60 or 66 to denote the retarder.  Now Allison says R or retarder option. It is either a 3000 series or 4000 series. 
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

Re: Allison 4060 vs Allison 4000, Allison 3060 vs Allison 3000?

Reply #2 –
Correct, there are basically the two series, 3000 and 4000.  The newer ones are rated for higher HP and torque, but are quite similar transmissions-- same gear ratios, torque converter lock up, electronic control, etc.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Allison 4060 vs Allison 4000, Allison 3060 vs Allison 3000?

Reply #3 –
Hi Bret, your reply on this generated a question I have kinda thought about on the back burner for quite a while, and in particular when explaining coaches to potential buyers as I tout FT advantages.

When we say this or that tranny, and probably engine, is the same as used in big trucks, is that true?  I anyway tell someone, oh that will be good, they use them like that in large trucks (I think the M11 in particular is the smallest in the trucks hauling 80,000 lbs?)

I figure the 4000 tranny is exactly the same in a truck as the FT, but I wonder.  Same with the M11 engine, are they exactly the same or tuned or built a bit differently for the motorhome and not the same power or ability as in a big truck?
Mike
2001 U320 4010 Build 5878 (Gus)
Wrangle Unlimited Toad
Nacogdoches

Re: Allison 4060 vs Allison 4000, Allison 3060 vs Allison 3000?

Reply #4 –
Mike,

While an Allison 4000 is an Allison 4000, I have never seen an OTR truck with that transmission.  Commercial bus, yes, but not in an 80,000 GVWR truck.

We have a couple of retired truckers here on the forum who may be able to shed additional light on this.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Allison 4060 vs Allison 4000, Allison 3060 vs Allison 3000?

Reply #5 –
Quote from: Michael & Jackie –
I figure the 4000 tranny is exactly the same in a truck as the FT, but I wonder.  Same with the M11 engine, are they exactly the same or tuned or built a bit differently for the motorhome and not the same power or ability as in a big truck?

We were told by the Allison guy at the local truck service/parts place that the garbage trucks they service have the 4000-series in them (no idea if they have the optional retarder or not)
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Allison 4060 vs Allison 4000, Allison 3060 vs Allison 3000?

Reply #6 –
The Allison 4000 is a "series" of transmissions. A 4060 would be the 6-speed version (including two overdrive speeds). An "R" at the end would indicate the built-in retarder. I believe there is also a 4070 (7-speed) version. My understanding us that in the commercial bus applications the Allison 4000 series is known as the Allison B500 series.

 
David and Carolyn Osborn
1995 U320C SE 40' Build 4726 Feb 1995
FMCA 147762
Motorcade 17186

Re: Allison 4060 vs Allison 4000, Allison 3060 vs Allison 3000?

Reply #7 –
Most OTR trucker use manual or semi automatic trans.  Semi automatics use the clutch only for starting and stopping.  All other shifting is by wire.  In top gear the semi auto and manual trans are direct drive units with no torque converter or other parasitic power losses.  The lower MPG of a full automatic matters when high mileages are racked up every year.  Automatics are used when there is a lot of stop-go involved such as city buses or the lack of trained (or trainable) drivers makes an automatic worth the extra.

Keith
Keith, Joyce & Smokey the Australian Cattle Dog
1995 U320 SE Extreme 40' WTBI Build # 4780, with a Honda CR-V hopefully still following behind.
Motorcade # 17030
FMCA # F422159
 

Re: Allison 4060 vs Allison 4000, Allison 3060 vs Allison 3000?

Reply #8 –
Thanks David and Keith....makes so much sense about the manual transmissions, shoulda thought about that, recall these guys at traffic lights doing lots of shifting on those big trucks.

mike
Mike
2001 U320 4010 Build 5878 (Gus)
Wrangle Unlimited Toad
Nacogdoches