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Thread: BB TBI on a 3074 intake

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  1. #1
    Fuel Injected!
    Join Date
    Feb 2015
    Location
    Ogden, UT
    Age
    40
    Posts
    139
    I bought a 1" TBI spacer with the same footprint for the BB TB. Came with longer mounting bolts and new gaskets for top and bottom. It sealed just fine.

    Quote Originally Posted by C2500 View Post
    Stew, I took it over to my local machine shop that did the motor for me and had him bore it out to 2.060.
    It took less than a 1/2 hour and he did it on the bridge port..Best part is he didn’t charge me...
    You had your 3740 intake bored out? I've heard that it's a 50/50 chance of hitting the water jackets around the throttle bores.
    1990 Chevrolet K2500, RCLB, Blueprint 383 TBI (16197427 ECM / 61 lb/hr / 16 psi FP), NV4500, NP241C, 4.10

  2. #2
    Fuel Injected!
    Join Date
    Dec 2017
    Posts
    116
    [QUOTE=Chewy1576;69450]I bought a 1" TBI spacer with the same footprint for the BB TB. Came with longer mounting bolts and new gaskets for top and bottom. It sealed just fine.



    You had your 3740 intake bored out? I've heard that it's a 50/50 chance of hitting the water jackets around the throttle bores.[/QUOTE


    There’s no water around the bores it is in the floor of the intake though

  3. #3
    Fuel Injected!
    Join Date
    Jan 2017
    Posts
    413
    Quote Originally Posted by Chewy1576 View Post
    I bought a 1" TBI spacer with the same footprint for the BB TB. Came with longer mounting bolts and new gaskets for top and bottom. It sealed just fine.



    You had your 3740 intake bored out? I've heard that it's a 50/50 chance of hitting the water jackets around the throttle bores.
    Ahhh...my plate was an adapter and not so much a spacer. I never ever purchased a spacer so that thought never crossed my mind.

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