Well it does seem a bit low what cam is it that your using? You mention it's a crane cam but there are alot of crane cams
Are you still using the stock clutch fan? Get an electric & that'll free up some power... throw on some under drives & I think you'll be alot closer to where you want to be.
Also your intake may be a bit big ... might want to see if a friends has an edelbrock(performer) upper you can swap to see what it's like. I have the same problem(intake is too big) & it kills port velocity.
Are you still using the stock clutch fan? Get an electric & that'll free up some power... throw on some under drives & I think you'll be alot closer to where you want to be.
Also your intake may be a bit big ... might want to see if a friends has an edelbrock(performer) upper you can swap to see what it's like. I have the same problem(intake is too big) & it kills port velocity.
I ran the dyno and made only 258 RWHP and 280 RWTQ. My car was tuned really poorly and running pig rich( 22* BTDC timing, and a/f ratio of 10:1). I've got it tuned alot better better (15* timing and neutral-slightly rich fuel state), and I'm adding an MSD 6al, 3G alt, and electric fan in the next few days, so I'm hoping to hit 300 RWHP by the end of the summer. Only other things I plan on adding are a bigger TB and MAF and maybe 24# injectors. I wish I had gotten my heads and intake ported before they went on, but I just didn't have the money...
dont forget you have the tremec tranny wich has a 18% loss a t-5 has 15% i had 301 rwhp i put in my tremec 3550 and a eaton 31 spline posi and 31 spline axles and the nitrous plate between the upper and lower intakes and it sucked me down to 276 rwhp but at least now my stuff shouldnt break if u had a t-5 your #'s would be a little higher the tremec had 13 some odd lbs more gear to spin trust me when i saw my dyno sheet i was dissapointed too....
I don't think the #'s are that bad. I also don't think a cam change is needed. Porting those heads and a custom chip could be worth nearly the 35hp that you are looking for. Remember- all dyno's are different. You could have made 285 or more on a different dyno. If you are really worried about it, find another dyno and try again.
When I dyno'd (193k) miles on the car I made 226.7 hp and 295.4 TQ at the wheels. Only mods are K&N filter, C&L 76mm MAF w/pipe, March UD pulleys. Offroad H pipe, MAC catback. And my A/F was 13.1 at cruise and 11.1 at WOT. These are SAE numbers. From a DYNOJET on a 80 degree day with 90% humidity.
MAY 15, 2004. SO I personally say your numbers are off. All because I do noth H/C/I and i make more TQ but you have me on HP. So who knows. Could be the larger heads like everyone else says.
MAY 15, 2004. SO I personally say your numbers are off. All because I do noth H/C/I and i make more TQ but you have me on HP. So who knows. Could be the larger heads like everyone else says.