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Thread: need more hp

  1. #1

    need more hp

    I have a 30 over standard crank flat tappet cam with a 555 lift flat top pistons with out changing to much how can i make more hp i circle track race and can stay within a car or 2 but dont have enough to pass any suggestions

  2. #2
    Senior Member RACING JUNKIE TheYellaBrick's Avatar
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    What are the engine restrictions for the class you run ?

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  3. #3
    none

  4. #4
    Senior Member MASTER BUILDER
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    Camshaft profile in circle track engines is very crucial to having good acceleration power throughout the entire RPM band. Compression, Camshaft, Cylinder head, intake manifold, and carburetor are all a balance set in order to make your combination work to its very best.

    Tell us a little bit more about your current set up, Compression ratio, Heads, Intake, and Carburetor being used. And car weight

  5. #5
    not sure how much compression Cam is a speedway tight lash flat tappet [email protected] int 252 exh 260 lobe separation is 106 gross valve lift int .542 exh .555 spring pressure is 120. Heads are Aluminum Pro comp 190cc runners 64cc chambers set up for my cam. Victor Jr intake no porting or polishing. Carb is a Holley 390 4brl 30 over flat top pistons car weights 2800 wet with driver.

  6. #6
    Senior Member MASTER BUILDER
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    Changes I would make, add dome pistons, change to a roller cam, and upgrade to a set of AFR 195 or possible 210 CNC ported cylinder heads.

    The Pro Comp heads, flat tappet camshaft, and flat top pistons are holding you back with the no restriction rules.
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  7. #7
    Senior Member RACING JUNKIE curtisreed's Avatar
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    Quote Originally Posted by cncmotorsports
    Changes I would make, add dome pistons, change to a roller cam, and upgrade to a set of AFR 195 or possible 210 CNC ported cylinder heads.

    The Pro Comp heads, flat tappet camshaft, and flat top pistons are holding you back with the no restriction rules.
    Quote Originally Posted by firemanjeff
    with out changing to much
    I think you missed the hardest part of answering his question. :lol: :lol:

    Curtis

  8. #8
    well the headas will have to stay what size dome pistons would you suggest with the cam i have and then what came also would you suggest

  9. #9
    Senior Member MASTER BUILDER
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    The biggest dome, but this will require tearing down the engine.

    Curtis, Thank you for pointing out "with out changing to much" I missed that part.
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  10. #10
    could u give me a little more detail and other options also would greatly appreciate it


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