BBC after market heads
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BBC after market heads

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    Senior Member orngxtc's Avatar
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    Default BBC after market heads

    Does anyone manufacture a standard height port ( non raised) exhaust port. I am mainly thinking aluminum. We recently lost a motor that was running rectangular ports and due to the thru transom exhaust I can't run anything raised. Any thoughts or ideas.

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    edelbrock makes a bbc head that is pretty much an aluminum version of gm,s rectangle port head.

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    Quote Originally Posted by buck28 View Post
    edelbrock makes a bbc head that is pretty much an aluminum version of gm,s rectangle port head.
    Thank you for the info. I located the head you mentioned. Not sure if it will end up be needed but it is a option.
    The money is the the only other issue and would it benefit the build.
    Aluminum Cylinder Heads - Chevrolet - Big-Block - Rectangle Port - Performer RPM - Edelbrock, LLC.

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    What's the application? How big is the engine, what rpm are you running? The Brodix Race Rite series is standard intake and ex port height. Much better head than the Edelbrock IMO.
    Last edited by scott foxwell; 08-21-2017 at 07:08 AM.
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    Quote Originally Posted by scott foxwell View Post
    What's the application? How big is the engine, what rpm are you running? The Brodix Race Rite series is standard intake and ex port height. Much better head than the Edelbrock IMO.
    Scott thanks for chiming in. Here is the info on the engine that was installed. The new one will be pretty close going back together. Give me your thoughts on things. I never really ran it all the way out but it seemed to have plenty of power to pull the 29 gear in the vdrive.

    Standard bore 454
    rectangular port GM heads
    cam solid flat tappet
    Water cooled twin turbo draw thru
    Custom Hogan welded manifold
    1100 dominator carb
    dry water jacketed exhaust thru transom
    16 lbs boost
    not quite sure on where it spun to before but would like 6600 or so on the new one
    turbo 400
    22 Schiada Day cruiser vdrive

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    Quote Originally Posted by scott foxwell View Post
    What's the application? How big is the engine, what rpm are you running? The Brodix Race Rite series is standard intake and ex port height. Much better head than the Edelbrock IMO.
    the race rite head is an oval intake port head,would that work with his rect intake manifold?

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    Quote Originally Posted by buck28 View Post
    the race rite head is an oval intake port head,would that work with his rect intake manifold?
    The Race Rite head is available either oval or rectangular. Just trying to figure out now if there is a benefit in using over stock iron heads for our application. When I say benefit I am considering all aspects including cost and labor for what we are looking at building.

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    Quote Originally Posted by orngxtc View Post
    The Race Rite head is available either oval or rectangular. Just trying to figure out now if there is a benefit in using over stock iron heads for our application. When I say benefit I am considering all aspects including cost and labor for what we are looking at building.
    i was unaware of that,i just did a google search and you are correct they have oval&rect port bbc heads,i guess i just learned another lesson.

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    The Edelbrock heads will be a bolt on replacement to the heads you took off. The ports and chambers will be a newer upgraded design of course. Also the exhaust ports on the performer RPM and Marine style heads are in the factory location.
    I prefer the Edelbrock over Brodix because their castings are much nicer and I believe to be stronger.
    I also had a buddy of mine take off his iron GM heads on his old school twin turbo 20' Schiada. He made more power with less boost when using the Edelbrock Marine heads.

    He used the Edelbrock 61555 heads.
    Aluminum Cylinder Heads - Chevrolet - Marine- Performer RPM - Edelbrock, LLC.

    If you dont want the Marine specific heads you can run the standard Performer RPM heads part # 60555
    Aluminum Cylinder Heads - Chevrolet - Big-Block - Rectangle Port - Performer RPM - Edelbrock, LLC.

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    Quote Originally Posted by CycloneRacing View Post
    The Edelbrock heads will be a bolt on replacement to the heads you took off. The ports and chambers will be a newer upgraded design of course. Also the exhaust ports on the performer RPM and Marine style heads are in the factory location.
    I prefer the Edelbrock over Brodix because their castings are much nicer and I believe to be stronger.
    I also had a buddy of mine take off his iron GM heads on his old school twin turbo 20' Schiada. He made more power with less boost when using the Edelbrock Marine heads.

    He used the Edelbrock 61555 heads.
    Aluminum Cylinder Heads - Chevrolet - Marine- Performer RPM - Edelbrock, LLC.

    If you dont want the Marine specific heads you can run the standard Performer RPM heads part # 60555
    Aluminum Cylinder Heads - Chevrolet - Big-Block - Rectangle Port - Performer RPM - Edelbrock, LLC.
    The Edelbrock heads are in no way stronger than the Brodix and I disagree that the castings are nicer. The ports and chambers of the Edebrock heads are barely an improvement over the original GM castings and in fact, the Edelbrock Roval head is the casting for the GM head. The Brodix rect port head is light years ahead of the GM head in every aspect, especially with a CNC chamber...but of course, that part is JMO.
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    Quote Originally Posted by orngxtc View Post
    Scott thanks for chiming in. Here is the info on the engine that was installed. The new one will be pretty close going back together. Give me your thoughts on things. I never really ran it all the way out but it seemed to have plenty of power to pull the 29 gear in the vdrive.

    Standard bore 454
    rectangular port GM heads
    cam solid flat tappet
    Water cooled twin turbo draw thru
    Custom Hogan welded manifold
    1100 dominator carb
    dry water jacketed exhaust thru transom
    16 lbs boost
    not quite sure on where it spun to before but would like 6600 or so on the new one
    turbo 400
    22 Schiada Day cruiser vdrive
    Sorry I didn't get back to this sooner;
    6600...that's a good running engine.
    I would look at either of the smaller rect port Race Rites, either the RR BB-R with the CNC chamber (294cc port) , or the RR BB2 Plus with the CNC chamber (312 cc port). Both will have the ex port in the stock location and I believe they will also have the extra intake bolt hole if you need that. The CNC ported BB2 Plus is a nice head, but getting a little on the larger side for a 454 even with some boost. The CNC chambers are what's going to matter the most. You also want to make sure the heads er inspected at least for guide clearance with a boosted maring app. We do these all the time...usually have a customer buy bare heads and we build them up to the necessary specs for the application with the right valves (you'd probably want an inconel ex valve), springs, bluprinted valve job and guide clearances, surfaced if necessary, and final assembled with springs installed at the right inst. height. We usually get them on the flow bench, as well, if the customer is ordering a custom cam.
    Last edited by scott foxwell; 09-05-2017 at 07:00 AM.
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    Quote Originally Posted by scott foxwell View Post
    The Edelbrock heads are in no way stronger than the Brodix and I disagree that the castings are nicer. The ports and chambers of the Edebrock heads are barely an improvement over the original GM castings and in fact, the Edelbrock Roval head is the casting for the GM head. The Brodix rect port head is light years ahead of the GM head in every aspect, especially with a CNC chamber...but of course, that part is JMO.

    Well I think most head porters will disagree with you. They prefer to port on an Edelbrock casting over the competition.
    Edelbrock has two foundries so they can control the quality of their castings.
    That is probably why allot of other leading head manufacturers use Edelbrock castings.
    Maybe just put an Edelbrock head next to a Brodix so you can see for yourself.

    Edelbrock makes a wide variety of cylinder heads. The stock replacement called E-Street are just a slight improvement over stock and the all out race heads are a huge improvement and shouldn't even be considered stock.

    I would hope the Brodix is a lot better then the original GM castings. If not there would be no reason to buy there heads. Also, its not fair to compare a Brodix heads with a CNC chamber to an as cast original GM casting.

    This is JMO

    Video: Edelbrock/Musi 24-degree BBC Heads Dyno Tested - Dragzine

    Not bad for a stock head

    If you went with an Edelbrock or a Brodix either way it will be fine. I just happen to have a different preference. At least they are both American made cylinder heads.

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    Quote Originally Posted by CycloneRacing View Post
    Well I think most head porters will disagree with you. They prefer to port on an Edelbrock casting over the competition.
    Edelbrock has two foundries so they can control the quality of their castings.
    That is probably why allot of other leading head manufacturers use Edelbrock castings.
    Maybe just put an Edelbrock head next to a Brodix so you can see for yourself. LOL...really??
    Edelbrock makes a wide variety of cylinder heads. The stock replacement called E-Street are just a slight improvement over stock and the all out race heads are a huge improvement and shouldn't even be considered stock.

    I would hope the Brodix is a lot better then the original GM castings. If not there would be no reason to buy there heads. Also, its not fair to compare a Brodix heads with a CNC chamber to an as cast original GM casting.

    This is JMO

    Video: Edelbrock/Musi 24-degree BBC Heads Dyno Tested - Dragzine

    Not bad for a stock head

    If you went with an Edelbrock or a Brodix either way it will be fine. I just happen to have a different preference. At least they are both American made cylinder heads.
    Yeah, you're probably right. What the heck do I know about cylinder heads.
    FWIW here's a set of 24* Ede's I just finished. These were the as-cast Victor 24* 340cc;
    They went from this:



    To this:



    (before final valve job):







    They went on a pump gas 555 and made very close to 900 hp with tiny 2" headers.
    I've used a set of RFD 24* Victors and made well over 900hp on pump gas on a 10.0:1 565. The Dragzine test isn't all that impressive for the heads they used. Full CNC, 377cc runner, vac pump, big oil pan and Vrbancic build, but it's a blower motor. I'll give it that. Heck, we've made 909 hp with a set of (ported) Canfield 310's on a pump gas 540.

    I don't like Edelbrock's aluminum. It doesn't machine like other heads. Brodix heads are a much better alloy IMO. Edelbrock had trouble for quite some time with soft heads and seats and guides moving around on high HP builds. They finally came up with their "HIP" process to help. They may have since solved the problem, I don't know.
    Anything patterned after the original GM casting is going to have rocker boss issues. They break. Take a look at a Brodix head and the design of the rocker bosses and then tell me the Edelbrock is a better, stronger casting. I've worked on probably every BB Chevy casting made and been doing this for a living for a while now. Most head guys I know will tell you the Brodix heads are probably the strongest in the business. They're heavy and that's the trade off.
    As far as foundries, yes, Edelbrock casts other heads, but they don't cast them to the same specs as their own heads. Every company has their own engineering and their own specs, and Edelbrock is just a foundry to them. AFR has Edelbrock cast their heads and they're a world apart from an Edelbrock head. If AFR had a head with a stock ex port location, that would have been my first suggestion.
    But again, JMO.
    Last edited by scott foxwell; 09-07-2017 at 10:44 AM.
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    Well it appears you build very nice stuff and are well educated. I know that we at Edelbrock have always ran the products we manufacture on our dyno's and flow benches against competitors. Brodix being one of them. With all of our tests we seem to always be right there with them if not better.

    Those Edelbrock heads you ported look like they turned out nice. The flow numbers are impressive as well. What bench did you use for flow testing? We appreciate the business and hope you will use more of our products.

    You say the aluminum is better in a Brodix head. The aluminum we are using in every Edelbrock head is A-356 and heat treated to T6 specifications. The race heads are now HIpped which as I am sure you know make them very strong. We have been told numerous times by reputable head porters they are similar to billet.
    I honestly cannot remember Edelbrock having issues with soft heads, seats and guides moving. Maybe we did a long time ago and then built our own foundry so we could control the quality of the castings.

    Now you mention that any head patterned after the original GM casting is going to have rocker boss issues and possibly break them. I agree those can break but the only time we have seen this with our heads (and it is very rare) is when someone used our street type head in a race application. The Edelbrock street style head is not designed for high lift/Race applications and when used in such a way can do something like coil bind the spring and cause the rocker bosses (among other things) to break. Besides those instances honestly we don't really have that issue. (To my knowledge)
    We also send our heads to Jesel and T&D so they have rocker assemblies readily available. I am sure you agree a shaft style rocker assembly is truly the right way to setup your high HP valve train.


    Regarding our foundries yes we do castings for other manufacturers. AFR being one of many. They all came to use because they feel we have the best castings on the market and can solve allot of issues they are having with their current foundries. We use our same casting techniques in their heads as we do ours.

    I agree AFR makes very nice cylinder heads. Those are always an excellent choice. I will have to politely disagree with you saying that their heads are a world away from ours. I do know that our heads test right with theirs.

    As I stated before, We appreciate the business and hope you will use more of our Edelbrock products.

    Again, This is JMO

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