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  1. #1
    Registered mxz800's Avatar
    My Boats:
    99 checkmate 270 convincor
    Join Date
    Jul 2001
    Pasadena Md

    Post OT: new chevy truck 8.1 upgrades

    has anyone done any upgrades to these motors and how did it work. truck pulls excellent but looking for a little more quickness ( got beat racing a powerstroke with chip) anybody done exhaust, comp. chip to these yet?? truck is 2002 3500 dually crew cab 4x4 with the allison.

  2. #2
    Platinum Member Platinum Member Tinkerer's Avatar
    My Boats:
    2001 Daytona 26, 1992 SCARAB 34, 1989 25 Checkmate Convincer, 1977 Glastron Carlson CVX 18
    Join Date
    Jan 2002
    ALTO, MI


    People used to think that diesels were slow. I own a CHEVY 2500 with 6.5 turbo diesel and it's pretty fast but nothing like the new ones.
    Hey even if it ain't broke it's still fun to tinker with it.

  3. #3
    Gold Member Gold Member liquid asset's Avatar
    My Boats:
    Wellcraft Gran Sport 3400
    Join Date
    Oct 2001
    Haslet, TX,USA


    hypertech power programmer, air raid cold air intake, 2-2 chamber flowmasters, helix power tower adds a lot of punch and sounds mean

  4. #4
    Registered Bill272's Avatar
    My Boats:
    95 Formula 336, HP500's
    Join Date
    Dec 2000
    Lake St. Clair


    Here's a couple of guys that put whipples on thier 8.1's.
    8.1 Suburban
    8.1 Avalanche Scroll down to the bottom for before and after ET's

    [ 02-02-2002: Message edited by: Bill272 ]

  5. #5
    Mitch Pyle


    You should deffinatly look into the Whipple System. The 8.1L Kits make huge Power and Torque gains. If you do the kit with the intercooler the Hp peaks out right around 500 at 4500 Rpm. And torque levels reach almost 900 Ft.Lbs at 3000 Rpm. That should give those diesl guys a run for there money.
    I have installed the kit on our shops 2000 Taho with the 5.3L and we tow a 28' twin engin boat with no problem. Add some exhaust like the B&B system, and an intake upgrade such as Airaid and you will be hauling ass. Plus the Whipple Guys are super helpfull and I wouldent recomend them otherwise

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