BIG BRODIES???? WHAT DO YOU THINK??

Old 03-21-2008, 10:16 PM
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jrthone
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Default BIG BRODIES???? WHAT DO YOU THINK??

Ive recently just brought a set of Bodix BB-2 Xtra Big Brodie heads.I would like to know what you guys think of them and how well they have flowd in the past.They are going to be run on a 632 Chev 15.5 roller motor N/A.They will be tickled up when i get them but i just want to know what you guys think?????
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Old 03-21-2008, 10:40 PM
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OneBadGMC
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It has been confirmed over and over that Brodix heads do not flow out of the box what Brodix claims.
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Old 03-21-2008, 10:42 PM
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hammertime
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Not very many conventional heads that will work ok with that size motor, Dart 380 & 410 and BMF 405's would be my choice. They will work but just wont work as well as other. IMO them heads should be on a 496-565
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Old 03-21-2008, 10:43 PM
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hammertime
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Originally Posted by OneBadGMC
It has been confirmed over and over that Brodix heads do not flow out of the box what Brodix claims.
Isnt that most heads :lol: flow #'s look good on paper dont they
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Old 03-21-2008, 11:46 PM
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cepx111
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I with Hammer those heads would be peanut ports on a 632! Even with some serious massaging they still wouldn't flow no where near what that motor would require.
I was thinking of going with some bb2x's on my 496ci motor which would have been just about perfect, but found a deal on some merlin vr345's instead.
I've alwasy heard that you can race dyno's or flow benches either.

Charles
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Old 03-22-2008, 12:33 AM
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sc3314
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Default Heads

Don't WASTE your time, or $$$ on those heads for that C.I. and C/R At best fully ported you will see 400 to 420 CFM. You need a head that will flow 470 CFM to make your short block start to work!

You have entered the world of 18, 14, and 11, degree heads. Shaft rockers, sheet metal intakes, and carbs that flow 1350 + CFM. Lots of $$$ and maintanance to make it run. This is what it takes to get the H.P. #s from this kind of C.I.

Do your motor a favor and SELL those heads! They are not made for that kind of C.I. Yes they will work, but not worth putting on!

What cam, intake, and carb are you planning on putting on this short block?
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Old 03-22-2008, 05:55 AM
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Pwmax
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Its really NOT the flow number that is the key here. Its the cross section. 420 cfm will make 1000+HP, in the correct application. Basicaly, on a 632, that head can't be made to big. Regardless if the you pick up flow or not, it will make more hp the bigger you make it. Will the engine make as much power as it could with something else, no, but even a true 950hp is a pretty brutal amount of power. Its funny how guys that have never expierinced even 500hp, will tell other guys how 950hp is weak for some given parts.

If I am not mistaken, these are the 365cc 26 degree heads correct? With a 2.325-2.350 intake valve, some serious hogging, those heads could make 1000hp on a 632, or close to it. How much power you looking to make? Are there better heads to start with, absolutely, but, that head can be made to work if you have them, and, are not going heads up racing, and are trying to dominate a certain class, then, no, that wouldn;t be the head to run, but, if this is a bracket car, or something similiar, then, they can make a lot of power.

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Old 03-22-2008, 09:25 AM
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sc3314
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Default Heads

Frank

Brodix advertises this head to only a 548 C.I. motor with that bore and a C/R of 13.0 to 15.0 They are a 26 degree head 365 CC with a 2.30 INT. and a 1.88 EXH. valve.

I understand the cross section and flow #s of heads. I guess if you had a 15.5 C/R 632 Why would you leave a 100 + HP on the table with a sub standard head for this application? For resale value most people would not even look at a 632 with this head on it.

I have a 540 with this head on it. I spent many hours porting them. Then they went to the engine builder. He spent another $600.00 of my money to finish them and CC them. He changed the chamber design, they now look like Darts chambers. On the dyno they did produce 830 HP with a 14.0 C/R This is a bracket car done by Gebhardts

Just finished a 665 C/I for my Tommy Muaney Chevelle 1294 HP and 1002 FT#s of torque PB 1801s done by Sonnys 15.3 C/R Yes, I left some on the table due to my cam choice. I wanted to stay below .900 lift. N/A with 2 1320 CFM Doms on a CFE sheet metal intake.

I don't dispute what your telling him! Becuase this is what you do for a living. Not knowing the rest of this combo? Intake, cam, carb, and chassis maybe this is a good starting point for him. Your right 950 HP can cause more than enough problems for most people!
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Old 03-22-2008, 10:40 AM
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Originally Posted by Pwmax
Its really NOT the flow number that is the key here. Its the cross section. 420 cfm will make 1000+HP, in the correct application. Basicaly, on a 632, that head can't be made to big. Regardless if the you pick up flow or not, it will make more hp the bigger you make it. Will the engine make as much power as it could with something else, no, but even a true 950hp is a pretty brutal amount of power. Its funny how guys that have never expierinced even 500hp, will tell other guys how 950hp is weak for some given parts.

If I am not mistaken, these are the 365cc 26 degree heads correct? With a 2.325-2.350 intake valve, some serious hogging, those heads could make 1000hp on a 632, or close to it. How much power you looking to make? Are there better heads to start with, absolutely, but, that head can be made to work if you have them, and, are not going heads up racing, and are trying to dominate a certain class, then, no, that wouldn;t be the head to run, but, if this is a bracket car, or something similiar, then, they can make a lot of power.

Frank
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Old 03-22-2008, 12:24 PM
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Tod74
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B JUICE What heads are on your 632?
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