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Ford 351W Comp Cams 31-255-5 Dyno2000 Power, Torque & Engine Pressure Table

Dyno2000 v3.08 data table (351W Comp 31-255-5.dyn) of calculated power, torque, intake-manifold pressure, volumetric efficiency, IMEP/FMEP/BMEP by RPM; peaks 297 HP @ 5500 and 322 lb-ft @ 4500.

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This document is page 3 of 5 from a Dyno2000 Version 3.08 engine simulation printout for a file named "351W Comp 31-255-5.dyn" — a Ford 351 Windsor engine simulated with a Comp Cams 31-255-5 camshaft. The table, titled "Calculated Power and Engine Pressures," lists simulated results at 500 RPM increments from 2000 to 11000 RPM. Columns include flywheel horsepower, flywheel torque, intake manifold pressure, volumetric efficiency percentage, and IMEP, FMEP, and BMEP pressures. Peak torque is 322 lb-ft at 4500 RPM, while peak power is 297 HP at 5500 RPM. Volumetric efficiency peaks at 94.7% at 5000 RPM. Power and torque fall rapidly above 6000 RPM, reaching zero at 9500 RPM and above, where BMEP goes negative (down to -55.3 at 11000 RPM) as friction (FMEP) climbs steadily from 17.4 at 2000 RPM to 59.5 at 11000 RPM. A reader can use this to evaluate the powerband of a stock-type 351W with this flat-tappet Comp cam, comparing it against other cam and head combinations in the same album of dyno simulations.

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Frequently asked questions

What is the peak horsepower of the 351W with the Comp 31-255-5 cam in this simulation?
297 HP at the flywheel at 5500 RPM.
What is the peak torque and at what RPM?
322 lb-ft (flywheel) at 4500 RPM.
What is the maximum volumetric efficiency shown?
94.7% at 5000 RPM.
What software produced this table?
Dyno2000 Version 3.08, from the file 351W Comp 31-255-5.dyn.
How much torque does the engine make at 2000 RPM?
225 lb-ft with 86 HP at 2000 RPM.

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