Dart Iron Eagle question

[el-camino]

hi,
anyone here with Dart Iron Eagle Platinum heads with 200cc intake runners and 64cc ?
i have this heads on my El-Camino engine:
GM Performance Parts 350cui block 12486041
DART IRON EAGLE Platinum heads 200cc intake runners
Professional Products Air-gap High-rise Intake
EDELBROCK AVS THUNDER 800cfm re-jeted
FEL-PRO 1094 head gaskets 0.015"
COMP CAMS XE274
COMP CAMS Valve springs, retainers, valvelocks
COMP CAMS Push rods chrome-moly
CLOYES TRUE Roller Timing Set
MSD 6T ignition system
MSD Billet Distributor
MSD 8,5mm spark plug wire-set
Splitfire spark plugs
Flow-kooler waterpump
Meeling Hi-volume oil-pump
engine-oil cooler HD
Fluidampr Harmonic balancer
RAM-AIR BOX

last summer i testet the Camino on dyno: 330rwhp
thats ok for me, but now i have a problem
the Oldsmobile from my wife is ready and i feel now, the engine in the Olds runs better ....and FASTER !
i build this engine for the olds with the same block, camshaft and so on. the one and only difference are the Vortec heads.

any idea ?

[el-camino]

ah, i see...many engine specialist here
this is just a simply question about heads, the vortecs better than Dart ? the Dart heads the right choice on my engine ?

[camcojb]

Originally Posted by el-camino

ah, i see...many engine specialist here
this is just a simply question about heads, the vortecs better than Dart ? the Dart heads the right choice on my engine ?

I think the Vortecs are better out of the box than the Darts. Fully ported would be a different deal in my opinion.

Jody

[el-camino]

thanks jody. what do you think can i do ?
heads replacement ? hmm, no idea
have you a good idea to optimize my engine with this heads ?
bigger camshaft for higher rpm ?
i read some tech articles in CHP, 350 chevy engine with this dart heads.
380 - 420hp with differnt cams and carbs and intakes

[z4me69]

i run the dart heads on one of my 69s they like a bigger cam

[el-camino]

give me an idea...how big