I sent an email to Edelbrock to ask about their new Aluminum Cleveland heads. They said that they are on production hold.
I also asked about the head flow data for these heads. The tech replied with the flow data for the new Edelbrock heads. I put it into an excel spreadsheet with flow data from other heads. I am trying to post it here , but it wraps and is almost unreadable.

Head Casting I / E Valve Lift Port Configuration Source DD2K Peak Torque DD2K Peak HP

Size 0.1 0.2 0.3 0.4 0.5 0.6 0.7
Cleveland 2V I 2.03 68.5 142.2 189 199.5 196.5 198 - Stock Mustang & Fords - Dec. 1999 419 @4000 RPM 361 @5000 RPM
Cleveland 2V E 1.67 57.2 89.7 120.2 143.5 159.6 162.7 - Stock Mustang & Fords - Dec. 1999

Cleveland 4V I 2.19 64.3 115.8 163.5 210 246 273.6 - Stock Mustang & Fords - Dec. 1999 419 @3500 RPM 363 @5000 RPM
Cleveland 4V E 1.71 66.7 103.7 133.8 154.4 169 178.4 - Stock Mustang & Fords - Dec. 1999

Aussie 2V Ported I 2.19 65 134 173 194 204 - Ported Tim Meyer 2005 419 @3500 RPM 355 @5000 RPM
Aussie 2V Ported E 1.76 47 84 114 138 162 - Ported Tim Meyer 2005

AFD 2V I 2.08 64 122 186 239 272 290 300 AFD Website 441 @4000 RPM 416 @5500 RPM
AFD 2V E 1.65 55 108 151 185 205 217 221 AFD Website

CHI-3V I 2.15 74 143 203 259 299 319 332 CHI Website 442 @4500 RPM 427 @5500 RPM
CHI-3V E 1.65 64 114 153 191 208 219 225 CHI Website

Edelbrock I 2.05 58 120 180 227 260 265 Edelbrock Tech 433 @4000 RPM 384 @5500 RPM
Edelbrock E 1.6 54 105 138 151 161 165 Edelbrock Tech

 

Convert the spreadsheet to a HTML document then post it on a website somewhere.

 

I uploaded it to Brian's Yahoo site as a HTML. Here is the link, but it will do no good unless you have a Yahoo ID. I will look for another place to post it.

http://f6.grp.yahoofs.com/v1/UJUUQkf...ead%20Flow.htm

 

Another note: Edelbrock has no plans for new intakes for the 351M/400 motors.

The Torque and HP figures in the table are the figures that DD2K gives me using the specs for Tim Meyer's 400 motor. I just substituted the flow data for each set of heads, without changing the Compression Ratio, or Cam, or Carb. I know Tim got a little better in the Dyno pulls, but this table is only meant to compare the heads to each other for flow purposes.

 

[QUOTE=danlee]Another note: Edelbrock has no plans for new intakes for the 351M/400 motors.
QUOTE]

Thats funny Danlee cause i thought i saw a new intake for these heads on their website unless its for the 351c only. These heads look as good as stock 4v heads. They will support 500+ horsepower. People say the 351 4v are cheaper than buying expensive aftermarket heads but i will tell there is plenty of money in mine.

I btw finally got my heads flown!
83 55
127 101
183 138
232 162
265 175
291 182
302 185

 

The new Intake Manifold is a Performer RPM Air Gap manifold for a 351C. It could be used for a 351M/400 with adapters. Since Weiand no longer makes the adapters, the only option left is Pricey Motor Sports.

 

That link did not work. Send the HTML file to me and I will host it.

And here it is:
VariousHeadFlow

 

Revised file uploaded, same location/link.

 

those numbers do not excite, i would've put production on hold too. they came up with stock 4V intake flow and stock 2V exhaust flow. any flow specs using Parker stuffers in 4V's?

 

The Edelbrock heads are 2V heads, so there is some improvement. The exhaust flow is difficult to improve while leaving the ports in the same location. The worst part is the exhaust flow at low lifts.

I believe the port stuffers are for 4V heads.

 

some improvement, yes, but enough to justify production and the cost to buy? especially when compared to the alloy competition(AFD 2V and CHI 3V). maybe as the supply of iron heads dries up and if the prices aren't too high, otherwise the others start to look justifiable. it isn't hard to wrap up a good chunk of the cost of some imported alloys by the time you put together a set of iron heads that will never flow or make the power of the alloys. i know the Parker stuffers are for 4V's, i thought the comparison to all the others would be interesting. i know that they are not exactly a bolt on option for most M/400's but they can be cost effective for Clevelands and spacer plate intake M/400's

 

I plan to reply to Edelbrock and point out the exhaust flow problem. Maybe they are aware of it, and those are preliminary numbers.

I may include the Excel spread sheet.

 

I must be the only person that sees some value to a good alloy street head.

My 400FMX is using a heavily reworked set of Boss 351 heads but it will get a set of CHI's in about a year. This is a $15K motor and it needs that type of head. The AFD and CHI heads are for a different market.

I'm currently working on a 351C for an EFI car application. The Edelbrock heads will need very little prep and will shave weight off the front end which is pretty important when you're looking for better handling. These will also let me run a solid 10:1 compression. As for costs, well I have over $1000 into a set of 302C heads that I shipped up with my car. I paid US$25 for them and the rest was spent on installing hardened seats, stainless single groove valves, milling for screw in studs, decking, and bowl clean up. These heads flow just a little more than stock but not as good as the Edelbrocks if those numbers you posted are correct. And, these things still weigh almost double what the Edelbrocks will weigh. If I have a choice, I'll ditch these iron heads for a good, bolt-on street alloy head in a second.

--J

 

these heads arnt made by edelbrock but they are pretty impresive 4 valve heads too rich for me on my drool list tho

http://www.araoengineering.com/Ford/clevelnd.htm

check them babys out