455 Buick on the dyno today

Discussion in 'Street/strip 400/430/455' started by Brian Hafliger, May 5, 2023.

  1. Stevem

    Stevem Well-Known Member

    Nice build!
    It looks like your using 234 intake cfm@28” to make that level of HP.
     
  2. 12lives

    12lives Control the controllable, let the rest go

    Nice Brian - where is your shop?
     
  3. We are in SoCal...immengines.com
     
  4. Very close to what Pipemax predicted....

    Bore=4.35000 Stroke=3.90000 463.68493850 Cubic Inches @ 5700 RPM Intake System= 90.13128 VE%
    Complete Intake System Flow @28in.= 229.7621 -to- 246.0425 CFM @ 0.570000 Lift (15.00000 VE% Loss)
    Cylinder Head Intake Port Flow @28in.= 268.0000 -to- 286.9899 CFM @ 0.570000 Lift (105.13128 VE%)
    Cylinder Head Exhaust Port Flow @28in.= 185.0000 -to- 198.1087 CFM @ 0.565000 Lift (no Flow Pipe)

    Dyno HP Weather Correction Equation = 8• SAE J607 (June1974) • STP • SuperFlow-FTQ • (Default)
    Air Correction=1.00000000 Station Barometer=29.92000000 Air DegF=60.00 Vapor Pressure=0.000
    HP Correction Factor= 1.000000000 Fuel Type= Gasoline • Pump Gas • ( 91 to 93 Octane Premium )
    Fuel BTU=19000.0 Air/Fuel Ratio=13.200000 BSFC=0.475979 Mixture Distribution= 90.0 Quality= 90.0
    Step Oil Pan • Regular Oil • 0.0 inHg • 0.0 kPa Vacuum • Harmonic Damper Efficiency= 90.0 %
    Engine Application = Race Engine • Mid-Range Peak TQ • Hi RPM Peak HP
    -----------------------------------------------------------------------------------------------------
    Camshaft = Solid Flat-Tappet Lifter
    450 RPM/Sec Dyno Test Level=7 Level=8 Level=9 Level=10 Piston FPM
    Peak HorsePower @ 5700 RPM 483.6 489.8 496.0 502.2 3705.00
    Peak Torque Lbs-Ft @ 4400 RPM 494.5 504.9 511.3 517.8 2860.00

    HorsePower per CID 1.043 1.056 1.070 1.083 Peak HP Fuel
    Torque per Cubic Inch 1.066 1.089 1.103 1.117 consumed in
    Peak Torque BMEP in psi 160.8 164.2 166.3 168.4 Lbs./ Hour
    Throttle Plate CFM @ 1.5 inHg. 804 894 940 985 239.1
    --------------------------------- Recommended Camshaft Specs at 0.050” inch Lobe Lift ---------------
    Cam Lobe Separation Angle (LSA) 105.444 105.812 106.275 106.696
    Intake Minimum Valve Lift 0.59783 0.62248 0.64815 0.67487
    Exhaust Minimum Valve Lift 0.54187 0.56422 0.58748 0.61170
    Intake Minimum Duration 246.077 247.811 249.593 251.388
    Exhaust Minimum Duration 248.758 250.511 252.313 254.126
    Overlap Minimum Duration 36.529 38.273 39.329 40.206

    Intake Maximum Valve Lift 0.62248 0.64815 0.67487 0.70270
    Exhaust Maximum Valve Lift 0.56422 0.58748 0.61170 0.63693
    Intake Maximum Duration 247.811 249.593 251.388 253.196
    Exhaust Maximum Duration 250.511 252.313 254.126 255.953
    Overlap Maximum Duration 38.273 39.329 40.206 41.181
    -----------------------------------------------------------------------------------------------------
    * above Specs adjusted for ValveTrain Deflection= 0.0100 Intake Lash= 0.0150 Exhaust Lash= 0.0150
    * User's current Camshaft Specs : OverLap Duration = 31.00000
    Lobe Separation Angle (LSA)= 110.00000 Camshaft Advanced = 2.00000 degrees
    Intake Lobe CenterLine = 108.00000 Exhaust Lobe CenterLine = 112.00000
    Intake Duration = 248.00000 @ 0.05000” Exhaust Duration = 254.00000 @ 0.05000”
    Intake Open = 16.00000 BTDC Exhaust Open = 59.00000 BBDC
    Intake Close= 52.00000 ABDC Exhaust Close= 15.00000 ATDC
    Intake Rocker Ratio = 1.65000:1 Exhaust Rocker Ratio = 1.65000:1
    Intake Lobe Lift = 0.345455 Exhaust Lobe Lift = 0.342424
    Intake Valve Lift = 0.570000 Exhaust Valve Lift = 0.565000
    -----------------------------------------------------------------------------------------------------
    Intake Pumping Choke Valve Lift= 0.669308 Exhaust Pumping Choke Valve Lift= 0.611869
    Intake Time Area TQ Valve Lift = 0.740752 Exhaust Time Area TQ Valve Lift = 0.676761
    Intake Time Area HP Valve Lift = 0.811189 Exhaust Time Area HP Valve Lift = 0.722927
    Intake System Flow Valve Lift = 0.680174 Exhaust System Flow Valve Lift = 0.642677
    Intake Port Flow Valve Lift = 0.708849 Exhaust Port Flow Valve Lift = 0.602454
    Intake Curtain Flow Valve Lift = 0.740037 Exhaust Curtain Flow Valve Lift = 0.619762
    Intake Z-Factor Valve Lift = 0.731022 Exhaust Z-Factor Valve Lift = 0.648055

    0.250 L/D Ratio Int Valve Lift = 0.532500 0.250 L/D Ratio Exh Valve Lift = 0.432500
    Note : the Valve Curtain Area will equal the Valve Area @ 0.250 Valve Lift/Diameter Ratio
    Intake Mach Z-Factor = 56.9940 % SOS Exhaust Mach Z-Factor = 70.7928 % SOS
    Mach Z-Factor definition = PerCent % of the Speed of Sound ( SOS ) at the Valve's Curtain Area
    Mach Z-Factor Valve Lift = Level=10 Cam calculated Speed of Sound velocity thru Valve Curtain Areas
    Pumping Choke Valve Lift = Level=10 Cam calculated Intake and Exhaust Valve Diameters and RPM Range
    Time Area Valve Lifts = Level=10 Cam calculated User's Camshaft Durations, Curtain Areas, RPM Range
    System Flow Valve Lift = Level=10 Cam calculated Intake and Exhaust System Flow and Valve Diameters
    Port Flow Valve Lift = Level=10 Cam calculated Intake and Exhaust Port's Flow and Valve Diameters
    Curtain Flow Valve Lifts = Level=10 Cam calculated Flow thru Intake and Exhaust Valve Curtain Areas

    DCR Cylinder Volume CC = 810.443840 Dynamic Compression Ratio = 8.679471:1
    DCR Effective Stroke = 3.3278 inches Valve Lash Compression Ratio = 7.847707:1
    Static Compression Ratio = 10.000000:1 Ve% + Lash Compression Ratio = 8.250395:1
    Cranking Psi @ 150 RPM = 160.9 Psi -to- 184.4 Psi @ 260 RPM (depending on Ring seal + Piston Rock)

    Station Barometer NOAA= 29.92885898 Pressure Altitude Feet= 1.2 Z•Elevation Feet= 0.0
    Density Altitude Feet = 67.2 Relative Humidity % = 0.00 Dew Point DegF = -263.39
    Virtual Temperature DegF = 60.00 Water Grains = 0.00 Wet Bulb DegF = 38.73
     
  5. nickwhite

    nickwhite Platinum Level Contributor

    91 Octane Fuel ?
     
  6. Jeremy Zepnick

    Jeremy Zepnick STEELMAN

    Sounds awesome.
     
  7. Stevem

    Stevem Well-Known Member

    Thanks for the stack of details!
     
  8. yes
     
  9. forgot to mention that with 10/30, pressure at idle was 25lbs. at 185° temp. Not too bad.
     
  10. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    You won't know the true hot oil idle pressure until it is installed in the car, and it is driven at highway speeds for 15-20 minutes. That will get the oil as hot as it will get.
     
    70sc455, ranger and TrunkMonkey like this.
  11. Customer has the engine in the car, reports after driving for 45min. oil pressure at idle is 28psi on his guage...seems to be holding up to what we observed on the dyno!
     
  12. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    That's excellent.
     

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