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Old 11-26-2003, 01:17 PM
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Hi Todd:
Those are impressive numbers.

One thing that strikes me, is the low Volumetric Efficiency VE% numbers? You may want to query your tuner/builder as to why those numbers are so low.

VE = (Actual CFM / Theoretical CFM) * 100

Generally, you can expect a so called normal run of the mill engine (stock) to give 75% at normal maximum speed and about 80% at max torque RPM.

A stock high performance engine should have VE Numbers of 80% at Maximum speed and 85% at max torque.

A blueprinted or racing engine usually achieves 90% at max speed and 95%+ at max torque.

Often, reasons for low VE numbers are found in the air pump aspect of the engine. ie: constricted exhaust or air filtration that starves the engine of potential air.

You may be able to even get more out of this engine! That is pretty impressive.
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Last edited by REDSC400; 11-26-2003 at 01:19 PM..
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