[newonad]

Help Ya'll

Just got dd2k and tried to dyno a combo I wanted to put together. Dont get me wrong, I'd love to achieve 664hp@7000 and 567 tq @ 5000, I KNOW they have to be off because of my novice entries. Please check this out to see where messed up the input data.

400sbc 4.155 bore/3.750 stroke
afr 220 w/2.08 and 1.6 (flow input manually from afr site)
10.7 compression
850 cfm @ 1.5inhg carb w/ single plane manifold
gasoline w/o any power adders
large tube open exhaust

cam info
CC xs274s(12-677-4)
dual purpost street
solid lobe center 110
seat-to-seat overlap 57
.501 lift in duration 274
.510 lift ex duration 280
0 adv/ret

ivo 31 ivc 63
evo 74 evc 26
1ca 106 eca 114

What did I mess up on??

 

[-SS454-]

You must have added forced induction of some sort. I put in the exact same specs and got 557 hp@6000, and 531 ft-lbs @4500/5000. I feel you were leaving a lot on the table with the rather small cam, so I plugged in a UD 247/247@.050, .525/.525, 110 LSA solid cam with 1.6 rockers. Made 580hp@6500, 529 tq@5000

 

[GRN69CHV]

When you plug in the AirFLow Figures you have to enter a FLow inlet number. If you leave this as the default " 1" the numbers are way off. I found the program to be accurate with an entry of 20"H2O. Most if not all head manufcturers list the flow data at 28" Mercury, there is a formula in the users manual to correct this. I just played with it against know engine combos until I was able to dial in the correction factor.