Just finished a 455 build for a customer, '70 heads I ported, TA performance pistons, TA solid FT cam, 10:1, offy dual carb setup with carter 750's, customers headers and HS 1.65 rockers...483HP and 509TQ. https://www.instagram.com/p/Cr4Wryd...1RnR9ctoTWynIi_dbR7LD3auL9du6vKtTnljpybnIAnCs
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
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.
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!