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  1. #1

    Default Which engine do I have?

    I came across this list of various tbi engines:

    GEN 1
    TBI 4.3 160hp@4000 235lb/ft torque@2400rpm
    TBI 305 170-180hp@4400rpm 260 lb/ft torque@2400rpm
    TBI 350 200-210hp@4000rpm 290-300 lb/ft torque@2400rpm
    TBI 454
    low po 230hp@rpm 385 lb/ft torque@1800rpm
    hi po 255hp@4000rpm 405 lb/ft torque@2400rpm

    I have a '95 k2500 suburban with the 454. It was mentioned that the low-po was 90-93 and that the 94-95 was the hi-po version.

    TBI L19 454 230 hp @ 3600 385 lb/ft torque @ 1600 rpm
    3/4 and 1 ton as well as 1990 454SS 80 lb/hr injectors (9-13 psi low pressure fuel system)

    TBI 454 255hp @ 4000rpm 405 lb/ft torque @ 2400 rpm
    454SS(91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi (high pressure system)
    Is there a RPO code that'll tell me the difference or is it only decipherable via measuring the fuel pressure?

  2. #2

    Enkeiavalanche's Avatar
    Join Date
    Apr 2010
    Piermont,NY, back in Northern NJ now, But may be in IL soon....


    Through your VIN number you should be able to tell all the Opt's that your truck came with. I think there is a break down of Vin's on here if not I know there is a web site...
    08 Z71 Avalanche Mods to date: K&N CAI,Hellwig Swaybars and End Links, Corsa Sport Exhaust, Superchips Programer,IPCW LOF & 3rd brake light and tails, AMI Gas door,Show Hooks and Door locks, Enkei Wheels, with Pirelli tires, StreetScene Bowties, Grant Steering wheel,Muth signal mirrors,SSBC Big Brake kit,Huskyliner Mug gards,Floor mats and Hood shield, McGard Lug nuts and locks, Bedrug, Cervini's Ram Air hood,35watt HID Fog lights, Sylvania bulbs all around ZXE's Highs and Lows, WhiteNight Back up lights,Sirius and HD Radio, SnugTop sitting on deck now Got a Softopper on now,Tempress Boat Hatches.... New Bilstein shocks are on... New Mods coming soon..... X

  3. #3


    OMG, forget i commented. I have no idea what I'm talking about today.
    00 Chevy Tahoe LT, 5.3 4x4

  4. #4


    Another blonde day?

  5. #5


    Everyday is a Blonde Day for this girl.

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