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Would you TPI again?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ZZ4x4, Jan 15, 2002.

  1. ZZ4x4

    ZZ4x4 1/2 ton status

    Oct 17, 2001
    Likes Received:
    Garland, TX
    I'm wrestling with my quadra-bog and considering an Edelbrock 1910 as a replacement. For the same price I could pick up a used TPI system. I know a bunch of folks here have done the TPI conversion, and I was wondering if given a choice, would you do it again vs still running a carb. Seems like a lot to go wrong ( MAF sensor, injectors, computer issues, etc..). How does driveability and power rate vs your old carb? Is it worth the time to do this? Any opinions are welcome. Thanks, JT
  2. BurbinOR

    BurbinOR 3/4 ton status

    Feb 17, 2000
    Likes Received:
    I would do it again in a heartbeat. No doubt.

    You learn all the time as you go into these types of projects, and what you learn is invaluable. These systems are very reliable and proven for over 14 years now (give or take). The intitial go round is intimidating if you have no experience with FI and computer controlled motors, but it is not rocket science, just compter science [​IMG]. Learning is getting easier on all these systems with the plethora of books/websites/swap specialist companies that it is really doable for a mid-level mechanic probably. Now, to get the beast running right (meaning better than factory) eprom burning is the way to go. Even the factory fuel and spark tables are not optimized, and compound that with having a non-stock motor (like my 406) and it is almost a requirement, at least to really get the most out of the motor.

    Drivability is better than any carb, anytime, any way.

    Power rate vs a carb I can't comment on with facts. But since TPI is known for its low end torque, and torque is what we want to move our heavy trucks, they are fantastic. I first coverted to TPI from a carb and made no motor changes, and felt a SOTP (seat of the pants) improvement immediately.

    Plus there are good options now available for hopping up TPI that it kinda makes ya drool...........such as a Vortec-head compatible intake manifold.............Super Ram.............Mini Ram............porting intakes/plenums/larger throttle bodies............not to mention LT-1 intake manifold swaps with the distributor hole drilled.

    Guess its obvious where I stand on this, huh? [​IMG]

    <font color=blue>'79 ONE TON TPI K5 - See it at---&gt;<a target="_blank" href=http://www.blazzinor.rockcrawler.com/>BlazzinOR's Beast Buildup</a>

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