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454 Vortec

Discussion in 'Chevy Trucks' started by nsmilligan, Dec 22, 1999.

  1. nsmilligan

    nsmilligan PlowSite.com Veteran
    Messages: 704

    Have a 98 K2500 with the 7.4 (454) any mods to improve gas mileage? Has anyone tried bigger exhaust or chips? Maybe a K&N filter. <br>Bill
  2. red450ih

    red450ih Junior Member
    Messages: 6

    Try www.454ss.com they may be able to help you.
  3. frahmie

    frahmie Junior Member
    Messages: 23

    you can never go wrong with exhaust and/or a chip. my buddy has a vortec 350 and he put exhaust and it helped the mileage. Just out of curiosity, what kind of mileage does your vortec get stock? <p>frahmie