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  1. #1

    Default how does this shortblock sound?

    385 LT1 short block built by Kowalsky machine out of Lynchburg Va (www.kowalskymachine.com)
    Scat forged 4340 crank 3.75 stroke
    Eagle 5.7" H beams
    JE forged pistons (12.5:1 w/64CC heads) 4.040"
    SpeedPro hell fire rings
    Program billet 4 bolt mains with ARP main studs
    all coated bearings (std size)
    Cloyes Hex-a-just double roller
    Melling HVLP oil pump with welded on pickup for Milidon pan machine work
    4.040 bore and hone
    line honed
    true 4 bolt block
    rings gapped for nitrous
    0 decked
    lifter valley holes tapped and filled with pipe plugs and vent tubes to prevent windage
    front and rear drain plugs screened

    Milidon 7qt oil pan
    SFI damper (pro products)
    COMP cams custom grind solid roller cam installed and degreed in
    24X*/25X* 63X"/64X" ( the lift is with a 1.65 intake and 1.75 exhaust rocker)
    motor was almost the same before the rebuild and made 562HP and 527TQ at 6700 with 11.5:1 compression on motor on the engine dyno but is built for up to a 300 shot
    Last edited by jeremy stanke; 10-12-2008 at 10:43 PM.

  2. #2
    Long Live the Opti


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    Default

    Just curious, what heads are you planning on going with?? If you use a stock LTx casting your static compression ratio is going to be off the charts. I believe that TFS heads as cast are 64CC's. Definitely a high compression setup.
    Quote Originally Posted by Ryan Stout View Post
    I would try to work my neck muscles but I'm not invited to the LS guy parties.

  3. #3

    Default

    i was thinking about something from LE or AI

  4. #4
    Long Live the Opti


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    Quote Originally Posted by jeremy stanke View Post
    i was thinking about something from LE or AI
    Just make sure it's an aftermarket casting like TFS or something with a larger chamber. THe LT1 head is a 54CC chamber. I'd honestly look at going with a smaller dome on the piston to help things out.
    Quote Originally Posted by Ryan Stout View Post
    I would try to work my neck muscles but I'm not invited to the LS guy parties.

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    Default

    ya 11.5 was probably made with aftermarket heads. if you go with a stock head your CR will be way to high to run on pump gas. e85 on the other hand...
    DD: 01 RCLB Duramax 500hp/1000tq
    Project 95Z: cam, nitrous, stuff...

  6. #6

    Default

    they were running stock heads ported to 300cc but it was converted to a carb at the time

  7. #7
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    Quote Originally Posted by jeremy stanke View Post
    they were running stock heads ported to 300cc but it was converted to a carb at the time
    What was ported to 300CC??? Certainly not the stock heads. Hell, even the biggest AFR's won't open up to 300CC.

    Were you talking CFM???? Completely irrelevant to what we're talking about here. CFM has no bearing on compression ratio.
    Quote Originally Posted by Ryan Stout View Post
    I would try to work my neck muscles but I'm not invited to the LS guy parties.

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    Yeah the shortblock sounds good...like stated thats a little high compression for a pump gas motor. If you want a race only setup this would be good.

    If you want to keep it on pump gas with this setup...your tuner will hate you

    Other than the compression being too high looks like a good setup...if you can find a corvette block (4-bolt) that will save you some bucks. I paid $400 to have my 2 bolt block converted to splayed. If you cant find a vette block cheaper than that just get the splayed mains.

    7.10ET 88mph 1/8th (old setup)

  10. #10
    Long Live the Opti


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    Quote Originally Posted by jeremy stanke View Post
    thats what they said, here is the link

    http://www.camaroz28.com/forums/showthread.php?t=509570
    Ok, the stats on the heads that he posted don't mean jack. 300CFM at .650 lift means squat. What's the intake runner volume, what's the combustion chamber size, ect. What he gave doesn't help you out at all. Something else about that motor that didn't look right: he's saying HP peaked at 6700 RPM by what he stated. That's a bit shallow given the supposed size of the setup with that cam. That thing should peak closer to 7K+ I think.

    On to your setup, if you go with the above motor you originally posted, I think a set of LE or AI Ported Trick Flow heads that are NOT milled down would probably do you quite nicely.
    Quote Originally Posted by Ryan Stout View Post
    I would try to work my neck muscles but I'm not invited to the LS guy parties.

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