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

[z4me69]

i am running a 300 310 duration with 630 lift 106 lobe seperation with mine verry responsive and believe it or not its not bad on the street

[el-camino]

aah, you have the 1.550'' Springs. what is your engines rpm range ?

[z4me69]

yes 1.550 springs rpm is about 3500 up and it pulls like a mother untill you let out of it this car is basically a street racer though . i wouldnt want to run a automatic with this combo on the street . from what i can tell i would change your cam and intake. i have allways had good luck with the victor jr and i allways run crane cams no exceptions. i have ran comps stuff befor and had verrrrrrrry bad luck with it. motors were allways down on power . but others like comp . as far as cam call crane. comp and a few others and see what they recomend

[Steve Chryssos]

I like the cylinder heads more so than the carb choice. And your cam might be a bit small. But before changing anything, I would confirm that you have adequate compression and then find a shop with a Lambda meter to confirm that your carburetor is keeping up with the rest of the combination. Alternatively, you can purchase a Lambda Meter here.

http://www.innovatemotorsports.com/