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Boring & Stroking 5.3l To 6.6l

This is a discussion on Boring & Stroking 5.3l To 6.6l within the Internal Engine forums, part of the LSx Technical Help Section category; I NEED TO KNOW IF IT POSIBLE TO BORE THE 5.3L FROM 3.8 TO 4.0 AND PUT A 4.0" CRANK ...

  1. #1
    Junior Member
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    Lt. pewter
    02 suburban

    Thumbs up Boring & Stroking 5.3l To 6.6l

    I NEED TO KNOW IF IT POSIBLE TO BORE THE 5.3L FROM 3.8 TO 4.0 AND PUT A 4.0" CRANK TO STROKE MY 323 TO 400... THE SUBURBAN IS GO IN IS 4X4 AND IS VERY HEAVY AND NEED A LOT MORE POWER THAN 323 C.I....

  2. #2
    LoudMouth SStriker's Avatar
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    Red
    2000 Trans Am

    I dont think its possible. Find a 6.0l Iron Block and Bore and stroke that.

    PS. STOP YELLING

  3. #3
    Member 99transamC/FIA's Avatar
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    PEWTER
    99 TRANS AM

    3.905 max bore on 5.3L w/4.00 crank 383 cuin

  4. #4
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    Lt. pewter
    02 suburban

    Would A 383 C.i. Increase The Horse Power And Tq. Levels...
    I Have Descreened The Air Flow Sensor,
    Added A Daiblo Programmer, Headers, 160' Thermostat, K&n Filter With A Air Aid Induction, And A T.b. Spacer..

    I Guest The Next Thing Is A Cam Or Stroking Out The Block...

  5. #5
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    black
    2001 z28

    just slap in a cam, get rid of the diablo, stall it, and get a dyno tune. stick something like a 224 cam in and you can have some nice power. just make sure you get rid of that piece of crap g80 in your rear end before you start launching.

  6. #6
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    Lt. pewter
    02 suburban

    Thanks For The Information On The Cam And 6.0 Block...
    What Is The G80.
    What Works Better Than The Diablo, May Be "hp Tuners"...
    I Was Very Disapointed When I Got The Results Of My Burban From The Dyno Shop...

    230 H.p.
    282 Lbs/tq
    At The Rear Wheel... I Guess You Loss A Lot The The Transfer Case But I Need To Build Up A Lot More Power...

  7. #7
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    black
    2001 z28

    the g80 is the posi unit in the rear end. the g stands for grenade. you can get hptuners and do it yourself, or get a dyno tune.

  8. #8
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    Lt. pewter
    02 suburban

    I Also Need To Know If Stell Blocks Have Any Liners OR Sleeves Like The Aluminum Block Do....

    I Know All Ls-based Engines Have 4.4" Spacing And Sleeves Are Sold The Can Be Bored Out To 4.250"... I Have Never Opened Up An Ls- Engine... I Have A Long Block 5.3l For A Spare Eng. And I Would Like To Work On This One...
    You know you are right about the diablo, the frist day I had the turner in stalled I called daiblo and asked if that was all i was going to get out of the tuner...
    Last edited by 02BURBAN; 07-26-2007 at 07:15 AM.

  9. #9
    Member danziger's Avatar
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    Le Mans Blue
    2004 Z16

    Why not just put a Maggie blower on it and call it a day? The 5.3 is a good engine (I have one in my wife's 2004 Z71), but I wouldn't build it when getting a 6.0 is easier and probably cheaper.

  10. #10
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    black
    2001 z28

    sleeves will end up costing you more than a 6.0, by allot.

  11. #11
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    Lt. pewter
    02 suburban

    Thanks Guy's I Thought Is Could Work...
    But Is Cheper To Go With 6.0 Block...

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