Did you put new lifters in when you did the cam swap? My lifters seemed OK at 230 000km, but that doesn't mean yours aren't crapping out.

Also are you still running your dying rear end? I wonder if your rear is in bad enough shape to drain HP...

 

let me look at ur dyno sheets next time i see u ...

i bet with a little tuning and revving it higher on the rollers u could see 350 .. thats only 15 hp .. i can see 15 hp in ur tune + more revs easy

should've told harvey to rev it higher ! sometimes he doesnt listen .. tell him u either rev to 6500 or u aint gettin paid

he wouldnt rev my car past 6500 when i dynoed 371 though at 6500 my hp was still on the rise ... 5900 is too low .. ur cam should peak around 6200 and start dropping around 6400

let the track tell the tale ! come make a few passes ... the mph + the weight of ur car will tell ur hp fairly accurately.

oh and i dont dare mess with the work of god himself ! he can tune ur car as he sees fit ..

 

I say if you are near a track, take it there and see what it'll do.
I have little faith in dyno numbers compared to track times.