[Steve C.]

Paul's comment regarding engines being pulled on different dyno's is very appropriate. Dyno results can vary all over the map.
Much depends on both the facility involved and also the operator.

From the internet...
Westech has an optimized, sealed dyno cell with blow-through fans (you can barely open the cell doors with them on), plus strictly controlled coolant and oil temps.
Typically Westech's engine dyno runs start at a 140-degree F coolant temp and (at worst) end with the temp no higher than 160 degrees.
Great for generating accurate and repeatable numbers (Westech routinely recalibrates its dyno)


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