My 97 3/4 ton 454... anything else i need or should do ?

Discussion in 'Towing' started by Jermaine Smith, Oct 31, 2019.

  1. L29Sub

    L29Sub I'm Awesome

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    Thanks on the truck! No longer mine.
    The Vortec FI is not an innately evil system. The problem relates to it being difficult to work on due to layout. Wiring, fuel lines, injectors, regulator all under the plenum being cooked. GM screwed up on their truck FI in the gmt400s. They tried to use components from newer engines on an old big block design. I have the same gripe with my Ram 3500. They keep scabbing on exhaust and emissions controls that are doomed to fail. And fail very expensively. Great Cummins engine, OK truck. But the emissions system is crap. Oh well....It looks cool.
    BTW, the 2" hood came from Tamraz on Ebay. I was pleased with the hood. It fit, and arrived without damage. Very cool!

    Sent from my SM-G965U using Tapatalk
     
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  2. Jermaine Smith

    Jermaine Smith OBS Enthusiast

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    Anybody know how much gap i need to set on the spark plugs ?
     
  3. Matt Conner

    Matt Conner I'm Awesome

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    Should be around 44 to 50 thousandths
     
  4. Schurkey

    Schurkey I'm Awesome

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    My 1997 service manual-on-DVD says .035 for a 7.4L
     
  5. Carlaisle

    Carlaisle Newbie

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    If your truck has spent any of its life in the rust belt, you should also look at the hard brake line between the rear axle and the fuel filter. It has a habit of failing by the plastic bracket on the frame rail where it's hidden by the fuel tank. If it's been down South its whole life you shouldn't have a problem.
     
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  6. Jermaine Smith

    Jermaine Smith OBS Enthusiast

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    I live in Mississippi. I got a fuel filter from Napa but i have yet to install it.... ill check to brake line deal out.
     
  7. Supercharged111

    Supercharged111 I'm Awesome

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    Does this depend on plug type? I.E. copper vs single/double plat, iridium, etc.
     
  8. L29Sub

    L29Sub I'm Awesome

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    No. .035 is for all plugs. If you bought NGK or Denso for your truck, they are probably already gapped correctly. That's why the cardboard tube. I'd check them anyway.

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  9. Jermaine Smith

    Jermaine Smith OBS Enthusiast

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    They are already gapped at .060.... AC Delcos
     
  10. Schurkey

    Schurkey I'm Awesome

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    I didn't expect the manual to specify .035; I figured they'd want .045. But .060 seems high to me.

    Summit is showing R44LTS6, which would be a .060 gap.

    What does your owner's manual say?

    Crap. Now I gotta go check the plugs in mine...
     

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