Advertisement
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Home Who's Online Today's Posts HP Calculator CompD Gift Shop Mark Forums Read
Go Back   Competition Diesel.Com - Bringing The BEST Together > Tech Area- GM > GM Competition and Performance
Register Members List Timeslips EFI Live Library Invite Your Friends FAQ Calendar Mark Forums Read

GM Competition and Performance General GM Competiton and Performance

Closed Thread
 
Thread Tools
Old 02-14-2017, 07:36 PM   #1
NoMercyZ06

Name: NoMercyZ06
Title: Rookie
Status: Not Here
Join Date: Jan 2017
Member`s Gallery
Posts: 3
Allison

What kinds of mods are needed for a 6 speed Allison to handle 500hp / 1100 ft lbs? Who's a good source for TC's and VB's ?

Sent from my SAMSUNG-SM-N915A using Tapatalk
 
Old 02-14-2017, 07:49 PM   #2
Chris Tobin
 
Chris Tobin's Avatar

Name: Chris Tobin
Title: Too Much Time
Status: Not Here
Join Date: Jun 2008
Location: Dayton, TN
Member`s Gallery
Posts: 2,662
Suncoast, DPC, PPE, Revmax, DTS and many others build the parts you need.
__________________
Chris Tobin
Editor--Ultimate Diesel Builder's Guide

Freelance Editor and Photographer
Working with DIESEL WORLD, DIRT SPORTS, MUSCLE CAR POWER & STREET TRUCKS magazines
tobinemail@aol.com
I might be able to help get you in a mag.
Custom poster size photos available. PM or email for info.
 
Old 02-14-2017, 11:55 PM   #3
NoMercyZ06

Name: NoMercyZ06
Title: Rookie
Status: Not Here
Join Date: Jan 2017
Member`s Gallery
Posts: 3
Are billet shafts required for that kind of power?

Sent from my SAMSUNG-SM-N915A using Tapatalk
 
Old 02-15-2017, 12:45 AM   #4
Burn Down

Name: Burn Down
Title: Diesel Enthusiast
Status: Not Here
Join Date: Oct 2010
Location: Boise, Idaho
Member`s Gallery
Posts: 153
No billet shafts. 500rwhp needs a full build, clutches, triple disk t/c, and valve body-pump pressure-t/c mods.

Are you building yourself?
 
Old 02-15-2017, 01:32 AM   #5
JWhite
 
JWhite's Avatar

Name: JWhite
Title: Trained monkey
Status: Not Here
Join Date: Aug 2009
Location: F Burg Ohio
Member`s Gallery
Posts: 1,817
What these guys said^

But I'd only run Suncoast or Goerend converters. For a reliable setup I'd run 6 clutches in the c3 / c4 packs, 7 in the c2 and you'll only need the standard single sided carbons for the c1. Don't need to get a complete vb, just get a Transgo jr and ratiotek springs.
__________________
GMC with a LiLLY
 
Old 02-15-2017, 07:03 PM   #6
DangrousDuramax
 
DangrousDuramax's Avatar

Name: DangrousDuramax
Title: IPUFSMOK
Status: Not Here
Join Date: Aug 2007
Location: Houston, Tx
Member`s Gallery
Posts: 60
It depends on what year model Allison you're talking about. If you have a 11'+ it can handle 500hp stock. If you're talking about an 05-10 then you will need extensive mods as stated. MikeL at Duramaxdiesels would be your #1 source for advice on mods and builds.
__________________
05 2500HD CC/SB, LT, 2WD, Black
AFE Stage II; E/J w/A; 4" MotoBlue straight pipe w/black stainless 5" mitre stack; EGR blocked; Amber DRL's; Rancho RS9000X's w/in-cab controller; Quad train horns; Black 20" KMC Rockstar's & Dune Grapplers
US Navy EOD (88-96) - Desert Storm vet
 
Old 02-15-2017, 10:42 PM   #7
Burn Down

Name: Burn Down
Title: Diesel Enthusiast
Status: Not Here
Join Date: Oct 2010
Location: Boise, Idaho
Member`s Gallery
Posts: 153
Quote:
Originally Posted by DangrousDuramax View Post
It depends on what year model Allison you're talking about. If you have a 11'+ it can handle 500hp stock. If you're talking about an 05-10 then you will need extensive mods as stated. MikeL at Duramaxdiesels would be your #1 source for advice on mods and builds.
No, a stock LML Allison will not hold 500rwhp for long if driven spirited... They will hold as much as the lmm with a transgo, the LML can be adjusted electronically, +100-ish hp depending on your right foot. Eventually the stock single disk converter will slip or the clutches will start going away.
 
Old 02-16-2017, 05:52 AM   #8
DangrousDuramax
 
DangrousDuramax's Avatar

Name: DangrousDuramax
Title: IPUFSMOK
Status: Not Here
Join Date: Aug 2007
Location: Houston, Tx
Member`s Gallery
Posts: 60
Not correct. Plenty of LML's out there with 200+hp tunes such as GDP and PPEI on stock Allison living just fine. Have been for years.

Sent from my SAMSUNG-SM-G870A using Tapatalk
__________________
05 2500HD CC/SB, LT, 2WD, Black
AFE Stage II; E/J w/A; 4" MotoBlue straight pipe w/black stainless 5" mitre stack; EGR blocked; Amber DRL's; Rancho RS9000X's w/in-cab controller; Quad train horns; Black 20" KMC Rockstar's & Dune Grapplers
US Navy EOD (88-96) - Desert Storm vet
 
Old 02-16-2017, 09:41 AM   #9
Burn Down

Name: Burn Down
Title: Diesel Enthusiast
Status: Not Here
Join Date: Oct 2010
Location: Boise, Idaho
Member`s Gallery
Posts: 153
Quote:
Originally Posted by DangrousDuramax View Post
Not correct. Plenty of LML's out there with 200+hp tunes such as GDP and PPEI on stock Allison living just fine. Have been for years.

Sent from my SAMSUNG-SM-G870A using Tapatalk
Well then head on over to DD and tell Mike or Evan that and see what they say...

I also mentioned that if you don't beat on it to hard it will live for awhile, but your not going to get full life out of one at 500 rwhp and a heavy right foot.
 
Old 02-16-2017, 09:52 AM   #10
B.A.Ram
 
B.A.Ram's Avatar

Name: B.A.Ram
Title: A Big Deal
Status: Not Here
Join Date: Jul 2007
Location: Dallas Area
Member`s Gallery
Posts: 2,598
Mike's an ass-whip to deal with but his trans is no joke. You might be able to get away with a transgo junior and an upgraded converter in the 6 speed as long as you don't drive like a jack wagon
__________________
2015 Superwhoopty

2016 Lexus G-Ride
 
Closed Thread

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 02:29 AM.

 


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2006 - 2024, CompetitionDiesel.com
all information found on this site is property of www.competitiondiesel.com