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new build est. hp?

This is a discussion on new build est. hp? within the LT1 forums, part of the Vehicle Specific category; 94 Z28 block bored out to 383 probe industries Chevy 383 Flat Top -4.0cc - SRS Piston Set by Probe ...

  1. #1
    Junior Member
    Join Date
    Dec 2006
    Location
    Irvine
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    18

    silver
    1996 Z28

    Exclamation new build est. hp?

    94 Z28 block
    bored out to 383
    probe industries
    Chevy 383 Flat Top -4.0cc - SRS Piston Set by Probe



    Part Number: 12337
    1.125" Compression Height
    3.750" Stroke
    6.000" Rod Length
    0.927" Pin OD
    1/16 in. 1/16 in. 1/8 in. Rings


    Forged: pistons, crank, and I beam rods
    Probe 5140 Machined Beam Connecting Rods - 5.700" Length
    its a full stroker kit
    LT1 to LT4 Conversion Kit 1994-97 LT1, Kit Includes Cylinder Heads, Hot Cam Kit, w/Rockers, Intake Manifold

    plus small stuff like msd opti
    hooker super comp mid tube headers
    SLP 1 loud mouth cat back

    what i wanting to know if what do u guys think my hp will be around thanks

  2. #2
    Senior Member 5.0THIS's Avatar
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    Colorado
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    3,704

    red
    95 Z28

    Just looking at your parts list, you have either the wrong connecting rods or the wrong pistons. If a piston is designed for use with a 6 inch rod, it wont work with a 5.7 inch rod. As for the LT4 kit.. it probably wasnt the best money spent. For about the same cost you can get the LT1 heads ported (which will far outflow stock LT4 heads), and matched camshaft to go with the heads. Nonetheless you're probably looking at 330-360 hp at the rear wheels through a 6 speed manual trans. Alot will depend on how good the pcm tune is. A custom dyno tune by someone who knows what they're doing is always best.

  3. #3
    Junior Member
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    silver
    1996 Z28

    ok im going to get the heads ported
    what cam should i go with then

  4. #4
    Senior Member 5.0THIS's Avatar
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    red
    95 Z28

    Assuming you take the heads to a reputable person who knows LTx heads, they'll be able to spec out a cam for you to match the flow of the heads and what you want to do with the car.

  5. #5
    Junior Member
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    silver
    1996 Z28

    500 hp is what im shooting for

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