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Perf: 2500 Specific Perfomance Mods

This area is for "the few, the proud ..." owners of the 2500 and their unique performance issues

6,265 Posts
429 Topics
Last post by EXT4ME
in Re: 2500 Rear Leaf Sprin...
on June 8, 2019, 06:40:07 AM
No New Posts

Perf: Air Intakes Kits & Filters

One of the first and easiest performance mods you should make. Cold air intakes, FIPK and others.

10,277 Posts
873 Topics
Last post by Snakepit
in Re: Everything about Spe...
on December 23, 2018, 19:15:21 PM
No New Posts

Perf: Drivetrain Brakes & Suspension

Transmission, differential, driveshaft upgrades for better performance. Suspension and Braking improvements for the performance crowd

10,491 Posts
875 Topics
Last post by redheadedrod
in Re: Diff blown, swap to ...
on Yesterday at 23:44
No New Posts

Perf: Engine Computer

Everything about tuning the engine computer for more horsepower. From programmers and modules to custom computer software & programs. Tune your truck to your needs.

13,424 Posts
1,010 Topics
Last post by rae61
in Re: 6.2L tuning?
on April 13, 2019, 06:29:44 AM
No New Posts

Perf: Exhaust

Lets get the air out of the engine now. Information about exhaust, cat back systems, shortie headers, medium and long tube headers, mufflers, tips & etc..

20,394 Posts
1,757 Topics
Last post by JVZL1
in Re: Muffman
on June 6, 2019, 08:29:19 AM
No New Posts

Perf: Forced Induction

Serious horsepower, serious money. Turbochargers, Superchargers & Nitrous.

9,835 Posts
389 Topics
Last post by KY_BOB
in Re: Towing with a superc...
on February 16, 2019, 22:54:15 PM
No New Posts

Perf: Ignition & Engine

Performance mods to the ignition system. Includes Plugs wires and coils. Engine mods include heads, valves, rockers, coolant system etc

9,727 Posts
659 Topics
Last post by Owillia05
in Re: L99/LS3 engine swap....
on May 1, 2019, 13:09:18 PM
Whether it's the 5.3 or the 8.1 share tips and tricks on how to boost horsepower, torque, and smoke the competition.
Pages: [1] 2 3 4 5 ... 13   Go Down
  Subject Started by Replies Views Last post
0 Members and 3 Guests are viewing this board.
READ THIS BEFORE YOU POST HERE! goo929 0 8,096 Last post September 19, 2002, 11:32:49 AM
by goo929
Fastest Avalanche list (track times) « 1 2 3 4 5 ... 17  All » KY_BOB 408 141,367 Last post February 19, 2019, 09:35:29 AM
by MyBigToy
Looking For Practical Mileage Increase Mods « 1 2  All » RedAV 36 12,777 Last post October 12, 2018, 09:45:32 AM
by Vaeagleav
what have you done to improve your MPG? « 1 2 3  All » jplumer 61 52,076 Last post April 11, 2018, 21:53:31 PM
by Jwh91
Best bang for the buck « 1 2 3 4  All » Vonderbach 80 46,679 Last post April 7, 2018, 01:34:42 AM
by Jwh91
So looking to build my '03 into a (semi) monster... redheadedrod 0 758 Last post February 15, 2017, 16:55:58 PM
by redheadedrod
100 horse more at the wheel? jwylde7 10 3,583 Last post February 5, 2017, 11:26:14 AM
by groo
Performance Mods! 04AvGuy 5 2,358 Last post January 28, 2017, 13:20:24 PM
by Z66Modder
Best WARRANTIED engine/torque/go fast mods for 07 and up???? Hanz Groober 9 4,790 Last post January 25, 2017, 22:00:48 PM
by XSKIER
New Avalanche Arrived, Time To Begin 6.0L Conv.! « 1 2 3  All » Jason_@_TX_Speed 58 15,952 Last post June 7, 2016, 08:04:30 AM
by igotzzoom
Just Getting Started EWD 0 993 Last post April 20, 2016, 11:03:48 AM
by EWD
some mods I got need more venomchevy 8 5,088 Last post March 3, 2016, 01:04:50 AM
by redheadedrod
Best Single MPG Mod? « 1 2 3  All » Oleksy 61 32,011 Last post June 15, 2015, 11:27:52 AM
by mavericknj
how to burn out?? « 1 2 3 4 5  All » 04avZ71 105 92,657 Last post February 10, 2015, 11:23:21 AM
by 09chevyavy
E 85 upgrade « 1 2  All » Birchboy 27 18,517 Last post October 6, 2014, 20:13:59 PM
by Rocky Mountain Sooner
Looking for performance with 1500 bucks « 1 2 3  All » sebs50 51 29,515 Last post August 22, 2014, 14:14:58 PM
by timfarn
what do u think my first performance mod i should do to my AV bigbrent 8 5,787 Last post May 23, 2014, 06:26:08 AM
by Maniac
Mods to suggest... Bolt on preferred... Klay23 15 6,678 Last post March 5, 2014, 05:57:32 AM
by Roody650iAvy
Avalanche finally meets the Dyno...video TXSZ66AVLANCHE 16 7,450 Last post December 16, 2013, 16:40:53 PM
by RB`s 2010 AV
HELP!! WANT more power!! « 1 2  All » Avalanche 1500 37 10,558 Last post November 22, 2013, 13:13:15 PM
by RB`s 2010 AV
hoo has the most horse power!! « 1 2 3 4  All » stogen 80 25,772 Last post September 16, 2013, 06:30:53 AM
by enoniam
CAI, Exhaust and Programmer Submariner 1 2,760 Last post August 9, 2013, 11:57:03 AM
by Submariner
0-60, who has the quickest Avy! AvyMan2093 12 4,585 Last post April 25, 2013, 18:53:36 PM
by Old No.7 Avalanche
Best performance mods for the money Bucks79 7 7,176 Last post November 1, 2012, 06:19:28 AM
by Bucks79
Advice with performance Mods needed!!! avking 10 5,193 Last post June 25, 2012, 18:57:59 PM
by MyBigToy
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