I modeled an HO engine using the following inputs
Short Block
Block: Ford 302
Cylinders: 8
Bore: 4.002
Stroke: 3.000
Cyl Vol: 618.40
Total Vol: 301.9
Cylinder Heads
Cylinder Heads: E7TE Factory
Airflow File: E7TEunported.flw (my own)
Intake Valve: 1
Exhaust Valve: 1
Intake Valve Dia: 1.780"
Exhaust Valve Dia: 1.450"
Compression
Compression Ratio: 8.70:1
Combustion Space: 80.31cc
Induction
Induction Flow: 550cfm @ 1.50 inHg
Fuel: Gasoline
Manifold Type: Tuned Port Injection
Exhaust
Exhaust System: H.P. Manifold & Mufflers
Camshaft
Camshaft Type: HO Cam
Lifter: Hyd/R
Cam Specs @: Seat to Seat
Int. Valve Lift: .444
Exh. Valve Lift: .444
Lobe Center: 115.0
Valve Overlap: 36.0
Int Duration: 266.0
Exh Duration: 266.0
Timing @ Adv (+/-): 0.0
IVO: 17.0 IVC: 69.0
EVO: 67.0 EVC: 19.0
ICA: 116.0 ECA: 114.0
Peak HP @ 4500 RPM: 235
Peak TQ @ 3000 RPM: 323
Peak VE @ 4000 RPM: 79.3%
If I soften the camshaft a bit by using the solid lifter model then it becomes
Peak HP @ 4500 RPM: 220
Peak TQ @ 3000 RPM: 309
Peak VE @ 4000 RPM: 79%
But that seems to fool things a bit as it skews the sim in favor of what was tested from the factory based on output alone. Factor in the following parameters and the 235/323 peaks seem viable?
A/F ratio of 13:1
Detonation free gasoline
68 degree temp @ 0% humidity and atmospheric pressure @ 29.86
unless of course the engine was tested under the exact same conditions?
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