dart iron eagles

[hogwild]

i can get a set of dart iron eagles,200 cc intake runners,64 cc chambers,2.02-160 valves, are these to much head for a 355 in a truck? i can get them cheap but dont want to waist money if they are to big.

[VileZambonie]

Nope, good deal if they're cheap get em

[hogwild]

400 bucks complete with double springs ready to bolt on. will they make power down low or will they need to rev to the moon ?

[VileZambonie]

For another $200 bucks you can get a nice set of Edelbrock aluminum heads

[eventhorizon66]

You will lose some low speed torque with a 200cc head on a street 350.  Those are excellent heads for builds in the 500 hp range.  Running 10:1 compression and premium fuel will make up some of your low speed loses.  If it's too soft then run a bit more converter stall.  At that price I'd probably go for it too; they are awesome heads.  Just know that they likely won't be the optimal choice for your engine.

Now a 383 is a different story.  They're perfect for 383's.

[hogwild]

another 200 for edelbrocks assembled and aluminum. cant see it not here in canada anyways,heads will go on a race only circle track truck does that change your opinion on low end

[eventhorizon66]

heads will go on a race only circle track truck does that change your opinion on low end

Yes.  Although 200cc intake ports still may not be the optimal size depending on your power goals.

But if your goals are in the 500 hp range, check this article out: http://www.stockcarracing.com/techarticles/scrp_0801_budget_racing_engine/index.html

[hogwild]

i was thinking about 425hp ,spinning to about 6500-6800 max. but what the heck 500 sounds good to me. wish he was more specific on what cam he used. i am also limited to a dual plane intake their goes the 500 hp.rules say i have to run dual plane intake and quadrijet carb will that bugger me for the dart heads?. thanks for the link good article

[eventhorizon66]

500hp does get harder with a dual plane and a Q-jet.  Do the rules specify that it must be a factory intake (probably)?  If not, this one could potentially squeak out 500 hp.  If so, this book includes a small section on modifying factory Q-jet manifolds for performance.

If I had to guess at the cam specs I'd say it consisted of Comp Cams XE294 hyd roller lobes #3317 on a 108° LCA at 4° advance with 1.6:1 rockers.

293°/293° (@ .006) - 242°/242° (@ .050) - .576"/.576" (with 1.6:1 rockers) - 108° LCA - 4° adv.

David Vizard says the only way to spec a cam is to first find the optimal LCA then select duration that will achieve the desired overlap, not the other way around (as most do it).  350s, with most commonly used performance heads, tend to need a 108° LCA.

Read this: http://www.popularhotrodding.com/tech/0607phr_camshaft_basics/index.html

And this: http://www.popularhotrodding.com/tech/0710phr_small_block_engine_build/index.html

[hogwild]

does not require factory iron intake, just dp and q-jet, 10-1 cr, fl tappet cam

[eventhorizon66]

Here's something I was trying to find for you earlier.

A study of port volumes and their effect on power:
http://www.gofastnews.com/board/technical-articles/1130-porting-school-7-power-port-volumes.html

[hogwild]

thanks again for the link good reading over thier. still on the fence about 200 cc heads but i will keep reading and se if my mind gets made up

[SUX2BU99]

If you are going to spin it past 6000 RPM and it's going to be used for circle track racing where the revs are probably going to be kept above 3000 RPM pretty much all the time, then those heads should do you well. On a street truck, I'd say they might be a little large for a 355 but that's just my opinion and that's just considering a power band of any usefulness under 2500-3000.

[malibu795]

GET THEM!!!!


agree with low end loss.. (under 2000-2500)
im running dart iron eagles 215cc 2.05/2.6 under cut vlvs....cam 114*ls 234/244 .522/.544" wiht 1.6 rockers. rpm air gap manifold. 7500rpm is rather easy.. with a 750 carb. a 600cfm will let it go to 6300rpm pretty easy. im running ~9.5:1 c/r on 87

runnign a B&M 2400 holeshot with 4.1 and 33" tires works very well.. if i were to go all out race a 3000 stahl would be ideal.

[hogwild]

talked to dart today and they say these heads are a little big for my use they say 180 cc runners.man its hard to deside when i get so much conflicting info