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Thread: BBC heads

  1. #1
    Senior Member RACING JUNKIE
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    BBC heads

    I have posted about head recomendation before..but I am getting ready to purchase something...but I still don't know which ones to get. I have it narrowed to either -2x brodix with 340 cc intake ports or the AFR but can't decide between 325 and the 345. Motor is a 13.1 540 with a solid roller .726 int .737 exh dur at 50 around 274 int 284 exh ..can't remember exactly don't have card with me...but the question is "What size intake ports would be best for a 540 ci 7000 rpm max? " The prices are the same for 325 or 345. They sell a cnc ported 335 also and a 357 for much more money. I want to get the right ones but don't want to go too big. Again this is a 7000 rpm motor. Car is 3050 lb 1/8 mile bracket car with powerglide with brake. 5.14 gears and 32 x 14 tires. 5500 converter

  2. #2
    Member JUNIOR BUILDER
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    my personal opinion, get the AFR's but skip the 345's and get the 357's. they are a great head. I ran them for years trouble free and awesome power out of the box. They had better power than a set of 355 cnc darts that I had before them. I had my heads on a 572. a friend of mine runs them on a 555 bbc and had the motor dynoed at 945 hp at 7600 rpm with a single carb. You won't be disapointed.

  3. #3
    Senior Member RACING JUNKIE
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    Thanks...my only concern was the rpm range. I don't take this engine past 7000( too poor to build another one if it blows up :lol: ) and wasn't sure how much head I need for that relatively low rpm.

  4. #4
    Member JUNIOR BUILDER
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    7000 rpm on a 540, you need a good head. No sense on just settling for something now. Get what you should get the first time out. That's how you save money. Many guys have just bought parts just to settle knowing they should have bought the other one, that's where the self ass kicking comes in. Buy the better ones now.

  5. #5
    Senior Member RACING JUNKIE
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    Quote Originally Posted by demented
    7000 rpm on a 540, you need a good head. No sense on just settling for something now. Get what you should get the first time out. That's how you save money. Many guys have just bought parts just to settle knowing they should have bought the other one, that's where the self a$$ kicking comes in. Buy the better ones now.
    I agree. That is why I am so cautious about choosing which ones to buy.The 357 AFR's are within my budget,just wasn't sure if they were too big. AFR recomended the 335 but also said to go to a smaller camshaft.If I wanted to shift at 7000.( he then offered to sell me a custom camshaft) I just wanted some real world opinions from someone other than a salesman.

  6. #6
    Senior Member RACING JUNKIE
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    Brodix 2x's The afr's seem to be a good head but customer service is poor there. There is a post on another site about a set of SBC heads that had terrible castings and got no help from AFR. I've seen some fast 540's with brodix heads.
    David Lanning
    IHRA NHRA 387B

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  7. #7

    heads

    I like Dart heads but i agree with Hammertime about Brodix being on some fast cars.

  8. #8
    Senior Member RACING JUNKIE
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    Heads

    Put a set of Brodix BB-2 EXTRA's on,and Hang ON!
    My Injected 520"BBC 960HP@ 7300.
    Later
    G 8)

  9. #9
    Senior Member RACING JUNKIE jmarksdragster's Avatar
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    Try Curtis on prices for what you want.
    http://www.raceflowdevelopment.com/
    Mark Whitener
    http://racingfuelsystems.myfunforum.org
    __________

    Good work isn't cheap, and cheap work can't be good.

  10. #10
    Senior Member MASTER BUILDER
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    Re: BBC heads

    Quote Originally Posted by Tod74
    I have posted about head recomendation before..but I am getting ready to purchase something...but I still don't know which ones to get. I have it narrowed to either -2x brodix with 340 cc intake ports or the AFR but can't decide between 325 and the 345. Motor is a 13.1 540 with a solid roller .726 int .737 exh dur at 50 around 274 int 284 exh ..can't remember exactly don't have card with me...but the question is "What size intake ports would be best for a 540 ci 7000 rpm max? " The prices are the same for 325 or 345. They sell a cnc ported 335 also and a 357 for much more money. I want to get the right ones but don't want to go too big. Again this is a 7000 rpm motor. Car is 3050 lb 1/8 mile bracket car with powerglide with brake. 5.14 gears and 32 x 14 tires. 5500 converter
    Just wondering if your cam is a little small for 540 cu in? I was kinda thinking that your lifts should be around the 790s and 750s and around the 278 and 288? Just a thought.

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