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New best street tires Buick GN

This is a discussion on New best street tires Buick GN within the Drag Racing forums, part of the Racing Forums category; 16' GNX style rims with Sumitomo 245's 60 2.0 1/8 et 8.0 1/8 90 1/4 et 12.45 1/4 110 Through ...

  1. #1
    Junior Member
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    MGM
    Pontiac G8 GT & 99 Z28 6M

    New best street tires Buick GN

    16' GNX style rims with Sumitomo 245's
    60 2.0
    1/8 et 8.0
    1/8 90
    1/4 et 12.45
    1/4 110

    Through the exhaust with 20 psi boost on alcohol. (93 octane in tank)

    ta 49 turbo, ported tb, bigger down pipe and exhaust, 3000 stall converter.

  2. #2
    Senior Member Sleeper101's Avatar
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    Red
    Vette,240sx,ls1 camaro

    Awesome!!!! Nice to see another GN out there doing well!!! Congrats, Is that Max PSI you can run?

  3. #3
    Junior Member
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    MGM
    Pontiac G8 GT & 99 Z28 6M

    I have an SMC single nozzle kit. The most boost I've ran is 24 with it but only in short bursts. At my power level (335 horse) in the 1/4 I am just about tapped out with the single nozzle kit. Maybe with a bigger jet or dual nozzle it could support more power. To tell you the truth in the future I'll be porting my heads and perhaps going roller at that point I'll dump the alky and run 16 psi. And make more power than at my current 20psi.

  4. #4
    Senior Member Sleeper101's Avatar
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    Red
    Vette,240sx,ls1 camaro

    Quote Originally Posted by Barnesgn231 View Post
    I have an SMC single nozzle kit. The most boost I've ran is 24 with it but only in short bursts. At my power level (335 horse) in the 1/4 I am just about tapped out with the single nozzle kit. Maybe with a bigger jet or dual nozzle it could support more power. To tell you the truth in the future I'll be porting my heads and perhaps going roller at that point I'll dump the alky and run 16 psi. And make more power than at my current 20psi.
    What Size turbo are you running?

  5. #5
    Member ramrod's Avatar
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    GOT BOOST?
    02 Vette-Black 618 rwhp

    Quote Originally Posted by Barnesgn231 View Post
    16' GNX style rims with Sumitomo 245's
    60 2.0
    1/8 et 8.0
    1/8 90
    1/4 et 12.45
    1/4 110

    Through the exhaust with 20 psi boost on alcohol. (93 octane in tank)

    ta 49 turbo, ported tb, bigger down pipe and exhaust, 3000 stall converter.
    Not bad at all!

  6. #6
    Drag Radials
    Turn Boost Up
    Easy 11,90

  7. #7
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    Quote Originally Posted by Barnesgn231 View Post
    To tell you the truth in the future I'll be porting my heads and perhaps going roller at that point I'll dump the alky and run 16 psi. And make more power than at my current 20psi.
    Yes, porting the heads will make a big difference. But don't back down the boost or you'll not take advantage of the heads. I'm running 25 psi w/ a single Alkycontrol kit, champion ported irons, t63e turbo to the tune of 10.70 @ 128. Lots of boost is where it at with these cars....
    '70 Buick GSX Yellow matching #'s
    '87 Buick GN, 10.66 @ 128... looks stock
    '06 Jeep SRT8

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