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throttle bodies/ manifolds

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  • throttle bodies/ manifolds

    I was lookin at the manifolds they have for the Ls1 and i thought the BBk looked good but then i saw the fast intake and it looked better, it offered 90mm intake and then theres a 90 mm t/b. Otheres offered 78, and i was wondering if 90 is just way too big for the rest of the motor. Also if anyone knows the stock t/b size that would be helpful.
    [COLOR=Navy]2000 Navy Blue Trans Am, T Tops, Automatic, Ram Air, Slp 85mm Mas, Air Lid, Smooth bellow, Hooker 1.75 Lt's, ORY, LM1, Air/EGR delete, Throttle body coolant bypass. Msd super conductor wires. TSP cam, ss3600, svo 38LB injectors.
    Ported fast 92 mm intake and 92 mm TB on order.
    11.539 @ 118.82 1.649 60 foot.

    1969 z28 - 9.957 @ 133.92 1.425 60 foot.

  • #2
    The stock throttle body size is 75mm. I'm not sure that a manifold and throttle body of that size would help you. Unless supported by major modifications. That is just my opinion but I do not have any first hand knowledge or experience with it.
    slp longtube headers, slp y-pipe, high-flow cats, superchips programmer, slp 85mm air sensor, slp loudmouth exhaust, ws6 hood, slp cai, kn air filter, slp high-flow lid, smooth bellows, tb bypass, subframes, lca's, panhard bar, torque arm.

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