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Thread: Vortec 4.8 Crank swap and re Bore to Make LS1?

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  1. #1
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    I don't have my reference books here in front of me but I believe the crank is the same in the 4.8/5.3/6.0/5.7 gen3 engines, all have the same stroke just different bores.

    Oh, forgot, the 99-2000 6.0L have a thicker flange on the crankshaft than all the others. Uses old style transmission/flywheel.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  2. #2
    Join Date
    Mar 2006
    Location
    Dawson Springs KY
    Posts
    284
    <div class='quotetop'>QUOTE(RedHeartbeat &#064; Mar 1 2006, 03&#58;10 PM) [snapback]45725[/snapback]</div>
    I don&#39;t have my reference books here in front of me but I believe the crank is the same in the 4.8/5.3/6.0/5.7 gen3 engines, all have the same stroke just different bores.

    [/b]
    To my knowledge that is correct.

    2011 Silverado LT 5.3 bone stock (for now)

    (gone but not forgotten)02 Avalanche Z-71 Vortech supercharged 3.12 pulley 10psi, SMC meth injection, 33 12.50-17 procomp AT, 17x9 procomp wheels, AVIC-N2 NAV, 4.56 gears, Detroit TrueTrac, 2500 stall converter, transgo HD2 shift kit, Vette servos, 80mm BBK throttle body, Edelbrock shortie headers Cold Fusion wet shot (60hp), and too many more mods to list. 8.86/18th 472rwhp/499rwtq

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