[Schrade]

Originally Posted by SAM/CH ZR-1

In my 383 (4.030 bore x 3.75 stroke) I have stage 1 inlet and stock exhaust cams.
My engine has the following additional mods.

-37.5 mm inlet ports
-Headers
-2.75 Inch PowerEffects exhaust System
-catalytic converters
-SGC base chip (thank you Aaron)

With 800 miles on the clock and without a final adjusted chip I went on a dyno and it pulled about 560 HP at the crank. Here in Europe we measure always the power at the crank, unfortunately.
The car has stock gears and is as fast as a C6 Z06. The weight of my ZR-1 is 3'530 lbs

With a adjusted chip and better modified secondaries there is still space for some additional HP's

Sam

Did you happen to do a Before + After HP reading of the PE pipes?

I'm curious if any more HP comes with this PE 3" hardware, over what Marc says is available by opening up the resonator restriction (I think he says 10??? ),

Jeff? [Shrek]? You happen to know?

I'm sure I lost double-digit HP's + TQ with the automatic - tranny fluid pump, TQ convertor, etc., ...