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01-03-2011, 10:29 PM
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#1
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Name: JQmile
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Nov 2006
Member`s Gallery
Posts: 6,976
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Allison MT643 for 1,500+ hp??
Some of 'em came behind Cummins, right? I talked to a shop today about them, huge shafts, four gears, lockup, can be controlled manually.....think one would work without breaking in a mega-hp street truck? Oh yeah, and only $2K for a rebuild. They also said they weigh about 500 pounds, which is a good amount, but maybe not for ultimate reliability.
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89 Dodge 972rwhp on the hose, still a VE!
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01-03-2011, 11:00 PM
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#2
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Name: ETH/DEE
Title: Fick mich
Status: Not Here
Join Date: Dec 2007
Location: CT
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Posts: 835
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sounds promising... What are the physical dimensions like?
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2002 QCSB P7100 24V
Colt
Fuelab
Sun Coast
II
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01-04-2011, 12:14 AM
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#3
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Name: 1-5-3-6-2-4
Title: Low-Tech Redneck
Status: Not Here
Join Date: Nov 2009
Location: Okotoks, AB
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Posts: 940
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the at545 and mt643 are decent trannies, I don't know about for that much power though. I know a drag truck up here used a mt643 and had to rebuild it often. it was behind a 1000ish HP 2stroke detroit though.
__________________
Luke
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'06 Ford F450 CCSB Lariate 37" Toyos Ppump 24v
'94 Dodge 2500 2wd RCLB 12v auto
'73 Camaro RS/Z-28 - soon LS3 stroked and forged
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01-04-2011, 07:27 AM
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#4
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Name: Signature600
Title: THA MAN!
Status: Not Here
Join Date: Aug 2006
Location: Jeffersonville, Ohio
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Posts: 11,961
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Quote:
Originally Posted by 1-5-3-6-2-4
the at545 and mt643 are decent trannies, I don't know about for that much power though. I know a drag truck up here used a mt643 and had to rebuild it often. it was behind a 1000ish HP 2stroke detroit though.
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In what though?
Weight could be a big factor in the life span...if you're talking 1000hp truck engines pushing 10-12K lb semi's, then in our trucks at say 6-7K lbs (or less) they might hold up to a tone of abuse?
Chris
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Rip @ Source Automotive
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01-04-2011, 09:46 AM
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#5
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Name: skidooman
Title: empty pockets
Status: Not Here
Join Date: Apr 2008
Location: Reno, NV
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Posts: 227
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I used to work at an allison distributor and have thought about this, the problem I see is the size of the the dang thing.They are much larger than a Allison 1k or a 47/48.
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05 Cummins, AT, 4D, SB. For sale 24,000 OBO
01 Stroke SC, LB, project truck.
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01-04-2011, 05:57 PM
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#6
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Name: 1-5-3-6-2-4
Title: Low-Tech Redneck
Status: Not Here
Join Date: Nov 2009
Location: Okotoks, AB
Member`s Gallery
Posts: 940
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Quote:
Originally Posted by Signature600
In what though?
Weight could be a big factor in the life span...if you're talking 1000hp truck engines pushing 10-12K lb semi's, then in our trucks at say 6-7K lbs (or less) they might hold up to a tone of abuse?
Chris
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that is entirely true. it was in a stripped out bigrig race truck. I say go for it. Cryo treat the shafts and gearsets. and let 'er buck.
the mt600s aren't that much bigger than the 1k/2k units. they are larger, but not gargantuan. the ht740 750s are fully 3 times bigger though.
__________________
Luke
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'06 Ford F450 CCSB Lariate 37" Toyos Ppump 24v
'94 Dodge 2500 2wd RCLB 12v auto
'73 Camaro RS/Z-28 - soon LS3 stroked and forged
Last edited by 1-5-3-6-2-4; 01-04-2011 at 06:00 PM.
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01-25-2011, 03:28 AM
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#7
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Name: blacksmoke83
Title: Too Much Time
Status: Not Here
Join Date: Oct 2008
Location: Qubec city, QC, Canada
Member`s Gallery
Posts: 256
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Quote:
Originally Posted by skidooman
I used to work at an allison distributor and have thought about this, the problem I see is the size of the the dang thing.They are much larger than a Allison 1k or a 47/48.
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I have 3" body lift on my truck and I think that is plenty of room for any of those Allison who goes behind 5.9 cummins.
I have an AT545 seating in the back of my shop that I wanted to try a couple years ago and that was not even a challenge to fit in there !
My NV5600 is the same or bigger than an AT545 and I have lot's of room around the dam thing still !
Just my
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01 3500, NV5600, twin HX35-40hybrid-16cm3 / K31 FMW, ARP studs, O ring, FASS 200, 911 P-pump, 7x0.12 converted injectors< 3850 SBDD, custom drivetrain, 6'' lift, 38'' Toyo MT, FRENCH CANADIEN, next project, Cummins K19 in 2002 Peterbuilt Thanx Hamilton Cams
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01-25-2011, 07:56 AM
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#8
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Name: dirttymaxx
Title: Green Behind the Ears
Status: Not Here
Join Date: Jan 2011
Member`s Gallery
Posts: 59
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lets see some pics of that bad boy!!!
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04.5 LBZ/LLY dirttymaxx puller
BIG thanks to CROWN SPRAY POWER,MAJOR BRANDS,BIG 4 LUMBER,X Town Performance & Diesel Injection service
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01-25-2011, 04:24 PM
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#9
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Name: smc953
Title: Diesel Enthusiast
Status: Not Here
Join Date: Jan 2008
Location: nw p.a.
Member`s Gallery
Posts: 115
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well you are going to have to change out your flywheel housing for the big thick one !!!
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01-25-2011, 04:39 PM
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#10
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Name: Bustedknuckles
Title: Honey Badger
Status: Not Here
Join Date: Jul 2009
Location: Hagerstown, MD
Member`s Gallery
Posts: 1,778
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They will shift slower too i would think.
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2004 Lb7: 06 front clip, Idaho-Rob tunes , PPE trans, ML converter, Airdog, ARP head studs, s366.
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06-13-2011, 07:09 PM
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#11
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Name: Knoberman
Title: swapping
Status: Not Here
Join Date: Feb 2011
Location: Mid mo
Member`s Gallery
Posts: 2,512
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Anyone know if any of these were available with overdrive? Im sure some were but how do you identify them?
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Keith - 92 12v in a 86 cc f350 4x4.
Quote:
Originally Posted by Snedge
I went to a Disney movie the other day and almost saw a mermaid tit.
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06-13-2011, 07:20 PM
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#12
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Name: DieselWrencher
Title: 6cyl Vette
Status: Not Here
Join Date: Dec 2006
Location: Mitchellville, Ia
Member`s Gallery
Posts: 2,886
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Quote:
Originally Posted by Knoberman
Anyone know if any of these were available with overdrive? Im sure some were but how do you identify them?
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As far as I know, no they weren't ever built with an overdrive. I thought about using one once, but they are big and heavy, and do shift slow. I'm sure someone could get them to shift faster, but I heard they won't shift real fast just because of how they're designed. Here is one next to a standard sized pressure washer for an example.
__________________
1968 Corvette 12v Cummins Compounds 47RH
1976 K30 CC SWB 12v 47RH
2000 Excursion VE 24v 47RH 4x4
1972 K30 Longhorn P-Pumped 24v 47RH Compounds
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06-18-2011, 07:09 PM
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#13
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Name: 2wpuller
Title: letting the smoke fly
Status: Not Here
Join Date: Dec 2006
Location: Washington,Missouri
Member`s Gallery
Posts: 2,894
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I had a MT40 in my truck it was a 6 speed that was the hardest hitting trany I had it broke almost all of the rear springs from slamming sohard.i weight was almost 400lb was cast iron.Now I'm putting in a 06 allison 6sp.can't wait.Tired of shifting the 10sp.
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1975 f250 6.0 Perkins,twins,2006,6sp allison
1972 C10,5.9 5sp
2007 Dodge 2 WD pulling truck
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