I believe I read here that the new alum. heads from edelbrock were on a porduction hold. I found this while looking for shorty headers. This is on their web site as new for 2005.

"PERFORMER RPM 351-C HEADS
MATCH WITH OUR NEW RPM AIR-GAP FOR CLEVELAND ENGINES
Until now, there weren’t many options available when it
came to aftermarket head selection for the Clevelands.
Now, that’s all changed with the Performer RPM head for
351-C. Designed to work with the 351-C, 351-M, and 400-
M, they feature very streetable 190cc intake runners with
2.05" intake and 1.60" exhaust valves that provide more
than enough volume for outstanding power to 6500+ rpm.
Not only do they offer superior flow over a stock Cleveland
or 351/400-M head, but they also offer the flexibility to
work on the standard 302 or 351 Windsor block to build your own version of a Boss 302, or the infamous “Clevor”
engine! The intake and exhaust ports are in the stock location to further add to the streetability of these heads, and
can be made to breathe even better with minor port work. Note: When bolting on to 289/302 engines using 7/16"
bolts, use stepped head bolt washer kit #9680.

Heads for Ford 351 Cleveland Engines Bare
Performer RPM 351 Cleveland......................................... ...#61609 Complete
.................................................. .......#61629"

 

The release as been delayed for a short whle now. The heads are not better than 4v heads but are better tan old 2v versions. I think danlee has gotten flow numbers for them already and i have them saved in my dyno2003 sim.

 

That is what I had understood. I just thought it was interesting that they are listed on their web site. Personally, I'm not interested. My 400 has less then 60K miles on it since installed in June of '93. I took a road trip to MI over the weekend and while it only managed 10.6 mpg @ 65 mph on the interstate, it hold a steady 55 lbs. oil pressure at that speed. Tight bearing. I do have plans on updating the cam, intake/carb, and the exhaust. I'd like to roller the whole thing but I can't justify $1000.00 worth of parts for what I'll gain in output.

 

The rockers would be the least effective mod and would save $250!

 

Your quite right there. I often wondered about cranes Ford rocker conversion kit(Jegs PN 270-36806-16). It still runs $200.00 but would appear to easier to set up and maintain over the long run.

 

I called a outfit that cnc machines intake and exhaust ports. They say a 2v Cleveland can be ported to about 255cfm on the intake, and a 4v can be ported to 300cfm+. A full out drag race set up would be around 1300.00 dollars, I belive you supply the parts. How much Go do you need? 255cfm*.25714*8=525.56hp potential and 300cfm*.26714*8=617.136hp potential. formula provided by air flow research and only gives the potential of horse power if the engine is built to take advantage of it and you have the revs and ci to flow the numbers. It seems all the eldeblah did was shave 40lbs off our heads and for that they are going to charge us an arm and a leg. Theres other alloy heads out there for our clevelands and they are alot better but also more expensive.

 

I want to offer my thoughts. I don't think edelbrock was trying to make to best flowing head out there for the cleveland. They wanted to make a performance head for the street enthusiant. A set a 4v heads will flow that of edelbrock but they are getting harder to come by as time goes on. The heads are better than 2v versions. And as for cost i have as near what they will cost in my 4v heads. I even searched for the best prices on parts. Hell here's a list

300 heads
82 intake valves
76 exhaust valves
85 heads milled
48 guides
64 seats
195 rockers
65 the valve job
17 valve seals
0 spring shims
0 stud washers
24 studs
32 guide plates
45 machining pedestals
35 spring seat machining
110 springs, retainers, and locks

total of $1178
$45 flow test

not to mention list price vs mine theres another $100 in valves, and another $100 in springs, retainers, and locks. I would have $1400 if i had not searched for parts.

 

CFM alone does not mean the ability to make power. any honest head porter will tell you that the heads that flow the highest numbers will not make the most power. hopefully Ebrock will be able to improve the flow a bit, but even where they are at now they have modern design chambers and are flowing at 4V intake levels with smaller valves. they haven't been overheated a couple too many times, run on unleaded and have replacement seats questionably installed, stored unprotected and rusted, 35 years old and ready to crack from a lifetimes worth of heat cycles. as mentioned above add up the items and the Ebrocks are a bargain for a guy that needs a set of heads!

 

With talk like that I'm starting to think of buying a set of eldelblah heads. Good point about the money that can be spent on a good head setup, and I scourage for the cheapest prices for the premium parts also, so I know what list prices can do to a total of parts. I guese I'm just biased towards edelblah for some reason or another. Now that I think about it, I don't think I have a favorite head maker. I'm stuck on hopping up stock heads for now maybe later I'll envest in a set of good aftermarket heads.

 

anyone have any ideas on what these heads are going to be running cost wise?

 

The head flow figures you need to look at are the figures from 0.100 up to the max cam lift. The valve spends only a few degrees at max lift, so the lower numbers are more important. The exhaust flow on the Edelbrock heads is anemic at low lifts, this is probably due to the elbow bend required to put the exhaust port at the stock location. Other head manufacturers have raised the exhuast port to relieve this problem. Unless Edelbrock heads are very cheap compared to AFD or CHI, I would not consider them for any build. The AFD and CHI heads flow better at both low and high lifts.

 

On my 400, I would use AFD or CHI. In fact, once I get the bugs out of it, I will be switching to a solid roller cam, Parker Funnel Web, and more than likely the CHI heads. However, I'm also looking at putting together a mild EFI 302C for a daily driver and long distance road tripper. It will have to run on pump gas in stop and go summer traffic with the a/c blasting. Add to this, I'm trying to pull weight off the frontend so I can take it around a road course or 2 every year for cheap grins. With my build, 300rwhp, I find the Aussie heads to be overkill. The Edelbrock heads have a niche just as the AFD and CHI heads. There are guys out there that want a better head than a 30+ yr old cast iron 2V but they don't need the potential of a modern high flow "4V".

--J

 

I think few people have a nich for this edelblah head, hence there dropping the production of said head.

P.S. sad realy because maybe a popular company like edelblah making a head for the 400 would stir up some interest and maybe some more aftermarket support for our beloved 400.

 

The Edelbrock heads and also the other heads are made for 351C applications. There are a few of us who are interested in using them on a 400. Between all the interested users there should be sufficient market for these heads.

BTW, CHI is working on an adapter for their high rise single plane air-gap intake to mate to CHI heads.

 

what was I thinking. of course they made it for the Cleveland. Progress not perfection.