hammertime

A local shop put the Eldebrocks on the flow bench and put a set of the bb3 oval ports on same bench flow #'s showed higher on the brodix heads.
I am still waiting for him to try these eldebrocks on his motor to see what they do compaired to the others with the brodix heads.

edvancedengines

Ok Quickiee Lesson in life.

All Edlebrock 24 degree heads are not created the same except when originally cast. There is only one RFD Edlebrock CNC Head source. It is not from your Edlebrock Distributor or from Musi Racing. It only comes from www.raceflowdevelopment.com

An RFD Curtis Boggs head is not a Pat Musi Edlebrock Head. Not unless Pat or someone sends it to Curtis for mods. Even then it is still not the same head.

There is no way possible in this Earth that a out of the box Brodix head will flow close to what an out of the box RFD Edlebrock will. Forget the Brodix claims. Most are pumped up numbers with no fact. I am disgusted with Brodix out of the box CNC heads and after testing them end up sending brand new customer bought heads to RFD for him to get them to wake up.

The numbers Curtis has on his heads are real and have been verified buy more than one bench across the country. The thing is most engines are better with the lower flowing versions.

Ed

badbug3

does rfd have an edlebrock head they cnc port for an engine size of about 540 for marine use.

hammertime

we wont start a "pissing" match but these were RFD Eldebrocks and a set of bb3's worked over by a local boy. They were close but the motor shop figured to see more hp out of the bb3's ... time will tell here soon. They new set of bb3's that have been redone by brodix with some help of a big HP engine shop just made 1180hp @ 582ci this wasnt some 17:1 one motor either, thats single alky carb on a brodix intake.

edvancedengines

David,
That is still impressive.

Don't get me wrong, I still like the Brodix Heads. It just irks me that we have to send out brand new heads to pay more money to have work done to get them to flow what Brodix claims. Love their castings though.

The only way to compare anyones out of the box heads is to compare them out of the box, not after a local head porter has steppped all over them. Or after anyone has. Out of the box they way you get them is what I am talking about with the RFD CNC Heads. The other valid comparison is price for what you get. Out of the box with same price as AFR 357 or either BMF 385 or 405. Can't compare with worked heads from any mfg. Not apples to apples.

I have had examples of Brodix CNC done for Brodix according to the wishes of BRodix with BRodix Programs with both WeldTech doing the work and with Keith Craft doing the work and am disappointed in what either shows on the bench.

I have a large network of engine building friends and know a few different well recognised cylinder head porters and some of them are in tight with Brodix, and no one I have spoken with has come close to what Brodix claims the PB 1200 CNC will do. That is supposed to be the biggest, baddest head they have. It is not cheap. BRodix claims 571 cfm Intake. No one I have talked with has ever seen it test to above 530 cfm if that much. Just had a go around with a set of the -12 Brodix WeldTech CNC's. They were down appx 20-24 cfm on Intake and the exhaust was laughingly ridiculas it was so bad. The exhaust just quit gaining at .600 lift. . I sent them to Curtis and he woke them up and now they are making power. That is two very recent examples of Brodix Over pumped Flow numbers.

hammertime

I agree for sure the newest Brodix seems to finally starting to take turn on not needing to get them worked on but still you pay big $$ and then have to turn around and pay $$ again.

TheRabbit

I would only consider RFD's heads and whichever head i use i want to compare both at cnc and max porting. I'm mainly trying to figure out if going to a 14, 18 or 12* head would be worth it for me. Keep in mind this is going in 3600lb mud racing truck that only runs 200'. Don't take that wrong cause every truck in my class is a 621+ BBF (with c heads 2.5 valves) or 632 BBC (big chiefs ) making in the 1050+hp range. Our rules limit us to only 1 carb, no tunnel ram or sheet metal intakes. Because of my rule limits will it be worth the extra cost to go to a 500+ cfm spread port head when the RFD 24* edelbrock heads are capable of 1200hp which is more than 1 carb can make anyway????

Thanks
Rabbit

obsessedtruck

I have a set of Curtis's 18* Big Duke Oval ports. On a litlle 522ci its at 1050hp at 7400rpm. with a brodix cast intake and a single 1250. In my books ITS WORTH IT!!!. My bosses 600ci w/ 14* sonnys dart heads was only at 1100hp with 2 carbs!!!!!. Now take and add another 100ci to my motor and I think you can do the math as the potental of the RFD heads. After I am done doing some changes I am actually shooting for that 1075-1100 w/ the same ci. Not all head guys are as honest and straight forward as Curtis. I've talked to some in the past and half are full of BS.

It takes ALOT of effort to get BIG numbers out a conv. style head. I think you'll have more coin invested in conv. heads as compared to a spread port for the same amount of money.

I would'nt go any where else except RFD. Like sonnys (not impressed).

Pwmax

I have 2 similiar engines that I am doing like you describe. One is a 598 inch big chief engine, one is a 632. Did one over the winter also, that one was a 598. Because of the money thing, budget, which is an oxymoron with a big chief style engine, but I am using the Dart Pro-1 18 degree castings, that I tune up. Additional porting and re-vised valve job. For the money, its a hard head to beat. Comes partialy cnc ported, chamber is done, and the bowls. They make 1100hp easy. when I say easy, I am not talking 1 inch lift, and 16:1 compression. I am talking 1 carb, 14:1 ish compression, and mid .800 net lift cam.

Nothing against curtis, but I would have to see it to believe it, that those heads would make 1200 hp. They look nice, and I am sure they will make a heck of a lot of power, but 1200hp isn;t exactly easy, even with a spread port head. Possibly with 2 carbs, and a 1 inch+ lift cam, and maxed compression, and LOTS of rpm, like 8800+, possibly. But those heads won;t do it as easily as a spread port head. If everyone else is using a spread port head, you will likely need a spread port head to compete. Could you run with some of the guys, and even beat some with conventional heads, absolutely. But, unless you don;t care if your middle of the pack, some guys don;t have to be top dog, then you will need the spread ports.

Frank
Advanced Performance
www.get-ap.com

TheRabbit

I don't plan to race for a tie. I race to win!!!! and I don't play well with others if you know what i mean!! lol. The bottom line i'm trying to figure out is, spread port is the way to go to make more torque and hp, but with my limit of 1 carb would the RFD edelbrock be equal to a 14 or 18* head? The add from RFD doesn't say they heads make 1200hp. to many things to consider, but flow #'s say it could support up to 1200hp.
Of course it would be cheaper because everything i have is for conventional heads. ie pistons, intake, rockers etc. but i'm starting a new motor and seriously thinking about steping up to spread port heads.
Now where do i start? Dart, Brodix, Sonny's, RFD, Dynoflo, SVR?? all good places, but it cost too much not to get it right the first time.
Thanks again for your help!!
Rabbit