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Thread: 6.5 mods

  1. 07-05-2006, 21:41 #1
    6.5diesel
    6.5diesel is offline Enthusiast
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    Default 6.5 mods

    I have a 97 2500 4x4, 6.5L and 5spd manual. What can i do to improve its performance and fuel econmy. It is 100% stock right now. any suggestions?
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  2. 07-06-2006, 05:56 #2
    trbankii's Avatar
    trbankii
    trbankii is offline Enthusiast
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    You've come to the right place! Start reading the articles and forums. I'd recommend buying the book of 6.5TD articles - then you have everything in one place.
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423
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  3. 07-06-2006, 06:55 #3
    moondoggie
    moondoggie is offline Enthusiast
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    Good Day!

    Ditto - buy all the back issues. One of the best investments I've ever made.

    Start with getting air in & out - bigger exhaust etc. Kennedy Diesel, one of our advertisers, shows how to clean up the intake on his website, all it takes is your time & effort. I have his exhaust on my Sub, & highly recommend it.

    Don't do anything else until you've got gauges - EGT & boost, minimum.

    Blessings!
    82 6.2NA K15 4X4 pickup, 4spd man w/ OD, 335K+ "In Rust We Trust" (parked)
    95 6.5TD 2500 4X4 pickup, Gear Vendors Aux. OD, > ¼ million miles - gone
    95 6.5TD 1500 4X4 3/4T Suburban, Kennedy exhaust, > ¼ million miles
    93 6.5TD 3500 4X4 1T crew cab LB pickup, 230k miles
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  4. 07-09-2006, 14:44 #4
    ogrice
    ogrice is offline Enthusiast
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    Use the search function and buy the books. By looking at the sigs of the other members, you can gage the amount of work that has been put into their rigs. My original engine died and I did all the work to my truck. I had to do the job right or shell out big$$$ for a newer rig. If you haven't read it already, read the "Fuel mileage poll by GMC Hauler" thread. I'm sure that the info will be very useful to you. Good luck with your 6.5L journey for more power.
    -*og%rice*-
    93 C3500 dually 6.5td. 18.7:1, Balanced, Coated, Underdriven, BD 4" exh, Turbomaster, 2 gage pillar + 3 gage dash, Dual electric fans, DB2 4911(maxxed out), NV4500, Propane, 97' cooling, Pre luber aux oiling, Phaser timing gears, hand made glow plug wiring harness 10ga. fluidampr damper, two pass FMIC, more to come..............
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  5. 07-10-2006, 07:27 #5
    ronniejoe
    ronniejoe is offline Newbie
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    Read the articles in my signature for a good overview. Also, get the 6.5 book and read about the Power Project truck.
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