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how long will a 454 tbi last? how many miles on yours

This is a discussion on how long will a 454 tbi last? how many miles on yours within the Technical / Maintenance forums, part of the General Discussion category; have a truck with potential I might purchase its 3/4 ton 4x4, nv4500 with 454tbi has 160k miles, mainly highway ...

  1. #1
    Registered User hankhill's Avatar
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    how long will a 454 tbi last? how many miles on yours


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    have a truck with potential I might purchase its 3/4 ton 4x4, nv4500 with 454tbi

    has 160k miles, mainly highway miles

    I'm coming from diesel trucks and not very farmiliar with working on gasoline motors or their reliability for that matter.

    I really like the truck.

    so how many miles are on yours and whats a good ballpark range for these?

  2. #2
    Registered User 454cid's Avatar
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    Re: how long will a 454 tbi last? how many miles on yours

    I don't have a TBI, mine's a Vortec, with 213K miles. 160K is low enough to ignore if the rest of the truck is in good shape, and the price is right. Being a TBI it's at least 15 years old.
    454cid
    1999 K3500 RCLB

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    Re: how long will a 454 tbi last? how many miles on yours

    Those are good motors, very reliable if properly maintained. Be aware that the mileage will not be great, but having that NV4500 is a HUGE bonus. If the price is right I'd say buy it.
    '98 K3500 7.4Vortec/4L80E, airbags, Bosch injector upgrade, Magnaflow exhaust, custom tuned by me!

    Click here for Vortec distributor cap info

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    Re: how long will a 454 tbi last? how many miles on yours

    Well I don't have a TBI motor. But my last vortec 454 had 567,000 miles when I sold it. That truck is still driven daily today as far as I know. I last seen that truck two months ago and the old man that bought said he's been to california twice with it since he bought it. My current truck has 190K on it and runs like a top. Hope that helps.
    CCLB dually, LS-1 Injectors, Airaid Intake, Magnaflow 2.5 dual in/out, Derale Cooling Tube Pan, B&W 24K super cooler[


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    Registered User hankhill's Avatar
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    Re: how long will a 454 tbi last? how many miles on yours

    awesome I'm glad to hear this fellas,

    I have some cash saved up and will start looking for another 454 motor out of a truck, pref. a vortec 454 because I hear they get much better mileage than my 1994, but if I find a vortec 350 (5.7) I might take that instead. But the main factor for my truck is, will my nv4500 thats behind my 454 have the same bellhousing pattern so that it will fit to a small block 350 vortec?

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    Registered User 454cid's Avatar
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    Re: how long will a 454 tbi last? how many miles on yours

    Quote Originally Posted by hankhill View Post
    awesome I'm glad to hear this fellas,

    I have some cash saved up and will start looking for another 454 motor out of a truck, pref. a vortec 454 because I hear they get much better mileage than my 1994, but if I find a vortec 350 (5.7) I might take that instead. But the main factor for my truck is, will my nv4500 thats behind my 454 have the same bellhousing pattern so that it will fit to a small block 350 vortec?
    Yes the small block has the same bolt pattern.
    454cid
    1999 K3500 RCLB

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    Registered User 454cid's Avatar
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    Re: how long will a 454 tbi last? how many miles on yours

    Quote Originally Posted by 99chevy7.4L View Post
    Well I don't have a TBI motor. But my last vortec 454 had 567,000 miles......
    How did you rack up that many miles? I used to drive 30K a year for work, and I didn't put that on my truck!
    454cid
    1999 K3500 RCLB

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    Re: how long will a 454 tbi last? how many miles on yours

    I haul tractors and travel trailers. So I drove all over the place. It was a 96 my last truck so 567K in 12 years. Now I mainly do a lot in state driving and local. As it is I drive around 600 a week. So I rack up miles.
    CCLB dually, LS-1 Injectors, Airaid Intake, Magnaflow 2.5 dual in/out, Derale Cooling Tube Pan, B&W 24K super cooler[


  9. #9
    Registered User hankhill's Avatar
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    Re: how long will a 454 tbi last? how many miles on yours

    well, I think I am going to purchase the truck, I really like driving a standard again too.

    going to drive this til the 454 blows (hopefully not for atleast 20k) and then look for a 350 or 454 vortec motor to swap in

 

 

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