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Thread: real power band

  1. #1

    Default real power band

    Does my 4.3L really red line at 4500 rpm, not used to it from my Audi sports car redlining at 6000

  2. #2

    Default

    Typically the redline is set by the manufacturer to ensure valve train safety. Import cars with overhead cams tend to be a little tighter in tolerance than push rods. The higher the RPM, the better chance you have at floating a valve and having a piston hit a valve. Gearing and torque typically make up for it though.
    Scott

    ΜΟΛΩΝ ΛΑΒΕ

    '94 Chevy Suburban K1500
    3" exhaust w/ aero turbine non-baffled muffler
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    CB w/ 44" whip antenna


  3. #3
    Legend unplugged's Avatar
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    Default

    True about the overhead cam thing. I remember the first Fiat I drove. It was a little boxy thing and working only from the reputation of Fiats, I have to say the thing that impressed me most was the engine's willingness to rev. Of course any good thoughts I had about Fiats were dashed when I had to replace a water pump on a friends X 1/9.

    I will say that even with pushrods a properly prepped SBC can rev to 8 - 9000 rpms.
    There is no way to happiness....happiness is the way.:yipi:
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  4. #4
    Legend s5belford's Avatar
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    Apr 2009
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    Kalamazoo Michigan
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    Default

    Quote Originally Posted by unplugged View Post
    True about the overhead cam thing. I remember the first Fiat I drove. It was a little boxy thing and working only from the reputation of Fiats, I have to say the thing that impressed me most was the engine's willingness to rev. Of course any good thoughts I had about Fiats were dashed when I had to replace a water pump on a friends X 1/9.

    I will say that even with pushrods a properly prepped SBC can rev to 8 - 9000 rpms.
    8-9000 rpm's.... Holy Crap!!!


    S.BELFORD

    2009 Silverado LT1: All Star Edition
    5.3 Liter V8 4x4

    Factory:
    Locking Rear Differential
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    Fog Lamps
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    Locking Tailgate
    20" Wheels

    Aftermarket:
    Rear Wheel House Liners
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    Driver Information Center
    20% Tinted Windows
    Low Profile Diamond Plate Tool Box
    GM Bed Liner
    Silver Birch Metallic Mirror Covers
    Silver Birch Metallic Vent Visors
    Flowmaster Super 40 (knock off)
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    Bed Rail Protectors
    Extang Tonneau Cover

  5. #5

    Default

    Haha! Yeah, my 4.3 in the s 10 Blazer was kinda gutless, especially compared the 5.7 in my 98 1/2 ton.

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