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Old 12-13-2011, 01:59 PM   #1
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Dart Iron Eagle heads

Here's the deal, I plan on building a motor over time.
I have an 87 5.0L long block with spun mains. The E7 heads are in great shape(still on block).

I want to build a super reliable DD with a little better power. I want 150k+ miles out of this motor. Ive found some cast iron heads that might help me out..

Dart Iron Eagle SBF heads, anyone know about these?

Would like to sell what I have and do a basic .030 rebuild on a 351w and add these heads with a cobra intake. Not sure about the injector size? I'm pretty set on iron heads. I've also considered a Lighting motor motor swap. I want to stay with an auto also.

My car only has 86k miles so I have time on my side to do this correctly.
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Old 12-13-2011, 02:00 PM   #2
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Re: Dart Iron Eagle heads

Great heads , good power !!!!
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Old 12-13-2011, 02:03 PM   #3
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Quote:
Originally Posted by stampde
Great heads , good power !!!!
Sweet! You've had them?? In cast??
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Old 12-13-2011, 02:10 PM   #4
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Re: Dart Iron Eagle heads

CAST OR Aluminum , same head , only difference is aluminum cools better and runs a little cooler ....... had them years ago ,swaped a set of ported stock 351w heads and it made a BIG difference on that engine
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Old 12-13-2011, 02:13 PM   #5
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Sweet! Was thinking they'd be well beyond lightning heads. You were running a carb or injection?
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Old 12-13-2011, 02:22 PM   #6
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Re: Dart Iron Eagle heads

that was an old 80 Capri,with a 351w and a 750 Holley carb, it ran high 12's with the ported 51 heads ( 12.80's ) swapped heads and it dropped to 12.0's
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Old 12-13-2011, 02:31 PM   #7
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Quote:
Originally Posted by stampde
that was an old 80 Capri,with a 351w and a 750 Holley carb, it ran high 12's with the ported 51 heads ( 12.80's ) swapped heads and it dropped to 12.0's
That's pretty damn good dude! Definitely leaning that way! Wonder how they would be o. A fresh 306ci?
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Old 12-13-2011, 02:46 PM   #8
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Re: Dart Iron Eagle heads

Of course the end choice is up to you, but I would reconsider being stuck on iron heads.
The aluminum heads have several benefits that are just to good to pass up.
Increased cooling.
Decreased chance of detonation.
Remove weight.
Easier to port and polish.
Can be welded for repair if needed.
...and last but not least...they just look cool!
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Old 12-13-2011, 06:00 PM   #9
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Quote:
Originally Posted by Trojan Horse
Of course the end choice is up to you, but I would reconsider being stuck on iron heads.
The aluminum heads have several benefits that are just to good to pass up.
Increased cooling.
Decreased chance of detonation.
Remove weight.
Easier to port and polish.
Can be welded for repair if needed.
...and last but not least...they just look cool!
My thing is I want this engine to have a minimal amount of quarks. I know aluminum heats at a different rate, which can cause coolant leaks and minor head aches which I aim to avoid. Then there cost, aluminum will likely be much more expensive. I don't plan on anything to wild. Maybe 400 @ the crank w/ the tray and support. I want to drive 4 hours to DC and not have any worries at all.
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Old 12-13-2011, 09:04 PM   #10
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Re: Dart Iron Eagle heads

Quote:
Originally Posted by deadsp0t View Post
My thing is I want this engine to have a minimal amount of quarks. I know aluminum heats at a different rate, which can cause coolant leaks and minor head aches which I aim to avoid. Then there cost, aluminum will likely be much more expensive. I don't plan on anything to wild. Maybe 400 @ the crank w/ the tray and support. I want to drive 4 hours to DC and not have any worries at all.
With the gaskets they have nowadays (Cometic or other MLS) the dissimilar metal problems are all but nonexistant. My Edelbrock RPMs have been on the car for 10+ years now, with no issues whatsoever and that's not using the MLS gaskets, just a set of Fel-Pro's.
The aluminum will be more expensive, but you can get a cheaper set for around $600-$800 maybe even less for a good used set.
The benfits I believe will offset any additional cost over time.
400 HP at the crank is going to require some good breathing heads.
Mine is at 405 with the Edelbrock RPM's, 65MM TB, 75MM MAF, 24lb injectors, X303 cam, 9:5.1 compression, balanced and blueprinted.
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Old 12-14-2011, 01:44 PM   #11
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Quote:
Originally Posted by Trojan Horse

With the gaskets they have nowadays (Cometic or other MLS) the dissimilar metal problems are all but nonexistant. My Edelbrock RPMs have been on the car for 10+ years now, with no issues whatsoever and that's not using the MLS gaskets, just a set of Fel-Pro's.
The aluminum will be more expensive, but you can get a cheaper set for around $600-$800 maybe even less for a good used set.
The benfits I believe will offset any additional cost over time.
400 HP at the crank is going to require some good breathing heads.
Mine is at 405 with the Edelbrock RPM's, 65MM TB, 75MM MAF, 24lb injectors, X303 cam, 9:5.1 compression, balanced and blueprinted.
You have a 302-306? I'd really like to do a 351 @ .030. Wouldn't it be a good bit easier to get to my total goal starting with more ci?

Are you saying the RPM's will out flow the Darts? Can the cast heads be ported the same as their aluminum counter parts?

I think the driveline in the 95 'R' should have been the driveline in the GT's. Want my final product to be as if that's what I had + a few bolt on parts. I've been pondering this build roughly 10 years and the more I think about it, I need to sell the 302 and get on the search for my 5.8. Which would raise the next question of what the best donor would be? Truck/van? Cars? Years??
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Old 12-14-2011, 03:21 PM   #12
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Dart makes some real nice heads.
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Old 12-14-2011, 06:21 PM   #13
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Re: Dart Iron Eagle heads

Quote:
Originally Posted by deadsp0t View Post
You have a 302-306? I'd really like to do a 351 @ .030. Wouldn't it be a good bit easier to get to my total goal starting with more ci?

Are you saying the RPM's will out flow the Darts? Can the cast heads be ported the same as their aluminum counter parts?

I think the driveline in the 95 'R' should have been the driveline in the GT's. Want my final product to be as if that's what I had + a few bolt on parts. I've been pondering this build roughly 10 years and the more I think about it, I need to sell the 302 and get on the search for my 5.8. Which would raise the next question of what the best donor would be? Truck/van? Cars? Years??
Yes, I have a 306.
Yes, it will be easier to reach your goal with more cubes.
No, I don't know which set of heads flows better without seeing a flow chart for each, but the RPM's were at the top of the chart in their group a few years back.
Yes, cast heads can be ported, BUT aluminum heads can be easily repaired (if you accidently port through a wall) or even built up with a welder to give you the shape or volume you might need.

I haven't done any research on the 351W for years, but we used to look for the early (67/8-70 4V) engines years ago.
Then I read a piece about some 80's models being pretty decent a while back. Not sure which ones exactly.
A good bet is to look for one out of a heavy truck or van and maybe one from an old patrol car.
Those used to be almost a sure bet to be more HD than a normal car engine.
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Old 12-14-2011, 06:35 PM   #14
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Can't see what you posted
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Old 12-14-2011, 06:43 PM   #15
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Quote:
Originally Posted by deadsp0t

Can't see what you posted
Can now.
Cool. Thank you for the info. So search for a motor begins.

I say I don't want to get to wild with it, but I also don't want to end up buying heads twice. I've got time to think about it so that will help. I also want to try to stick to plan too.
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Old 12-14-2011, 06:58 PM   #16
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Good luck with your new adventure!
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Old 12-14-2011, 08:20 PM   #17
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Re: Dart Iron Eagle heads

Head info from - Mustang50Magazine - 2009 article:

Quote:
Dart
Dart's Iron Eagle cylinder heads (PN 13301182, 58cc chamber, 1.94-inch intake valve; PN 13301112, 58cc chamber, 2.02-inch intake valve; PN 13311182, 62cc chamber, 1.94-inch intake valve; PN 13311112, 62cc chamber, 2.02-inch intake valve-all with 1.437 double valvesprings, $1,311.60) are cast-iron pieces that get it done on streetable/raceable, hopped-up small-block Ford engines. The CNC-machined heads flow 247 cfm at 0.500-inch lift on the intake side, and 159-cfm exhaust, also at 0.500-inch lift, and feature intake-port volume measuring 180cc (73cc exhaust). Iron Eagles are set up for stud-mount rocker arms, and as we learned in our own dyno and dragstrip tests, with a compatible camshaft, intake manifold, and exhaust system can improve an otherwise stock 5.0's output to roughly 350 rwhp, and carry a Fox GT to 12-second e.t.'s in the quarter-mile.

Edelbrock
Edelbrock's Performer RPM XT (PN 51259 59cc chamber, 2.02-inch intake valve; PN 60359 60cc chamber, 2.02-inch intake valve; $1049.95/ea) are 302-, and 351W-stroker-friendly aluminum castings that are a unique hybrid of as-cast and partial CNC porting (only in critical areas). The combination was developed in an effort to make the heads more affordable than fully CNC'd pieces. Peak intake flow is 292 cfm at .600-inch lift (209 exhaust), and the heads have port volume that measures 185cc on the intake side (75cc exhaust). The stud (rocker arm)-mount units include 1.57-inch (exhaust) valves, beehive springs, an 18-degree valve angle, and has machining in the area below the deck that facilitates changing link-bar-style roller lifters without removing the heads.
P.S. I only included these two as they are the ones we were discussing.
There are many more to see in the entire article.
It appears that the Edelbrock heads are actually cheaper than the Darts?

Here's another article for you to peruse - Street Head Guide
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Old 12-14-2011, 09:20 PM   #18
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Exclamation Re: Dart Iron Eagle heads

Here you go, save up those dollies and build you an ultra-reliable street engine with HP capabilities of up to 1500 HP.
At the 400 RWHP you desire this thing should last forever and you could up the anti so to speak, anytime you wish with no reliability concerns.

The BOSS 351!

P.S. The price is really reasonable compared to other aftermarket blocks, but still a lot higher than a factory stock unit.

P.S.S. The first time someone blows the doors off your new ride, you know modding it will soon get out of hand, so plan ahead.
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Old 12-14-2011, 09:54 PM   #19
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Good stuff! Ill be reading that as soon as I'm off work!
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Old 12-23-2011, 05:59 AM   #20
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Afr 185r best head for small block ford
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