Fuel pressure won't really help much, as long as its not an adjustable regulator, the FP will either be stock, or too little, neither really indicate much excecpt for a dead pump or good pump.
Really, the easiest way would be a dyno tune, but good luck finding a compentant LT1 tuner locally.
Quote:
Originally Posted by WildBillyT
Do you have proof that an aftermarket cam is, in fact, installed?
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The HP number is a little high for a stock cam through an auto, I would guess hot cam sized cam may be in there.
Another option would be to pull the current tune and see if its a stocker or been modified.