Allright I have a 355 with a 233/239 combo cam, full bolt-ons, and a 12 bolt. I was curious on dyno numbers. I made 376 RWHP, and 360 FT LBS. I was thinking this was kinda low. I was thinking I would see 400.

Heres a quick run down,

355 Forged with Light Weight 6" Rods, 49 lb 3.48 forged crank. and around
11.1 compression.
SLP mid length headers, through true duals
1.6 rockers
Gasket matched Intake and heads
Msd digital 6
Light weight flywheel
Alum. driveshaft
30 lb injectors
233/239 cam

And prolly some other stuff ive left off.

Is 376 par?

 

I think those numbers are pretty good if you don't have well ported heads... That is just my opinion though.

 

376/360 is pretty good for that setup.
Have you considered a custom tune?

Were those heads ported or just gasket matched?
(there is so much more to porting than simply opening up the intake passages)

Those are the two big things I would look at if you want to reach higher.

 

Those numbers seem pretty good. They are right around where I would have guessed.