Big Block 440 Aluminum Heads

Engine & Related

  1. 69 RR Fan

    69 RR Fan Member

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    Keep in mind that the Trick Flows come already CNC ported and to do that to the E-Streets or the 440 Source heads it actually
    makes them cost more than the Trick Flows. Even when CNC'd they cannot equal the flow numbers generated by the Trick Flows.
     
    Last edited: Dec 22, 2016
  2. ykf7b0

    ykf7b0 Well-Known Member

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    Question; With a hydraulic flat tappet cam under .500 lift will performance actually suffer due to a loss of air velocity with these bigger port heads? I'm looking at only a head swap and not a blueprint build so to speak. Also, when changing from factory cast heads to most of the high flow aluminum heads one must factor in the cost of adjustable rocker arms or at a minimum custom push rods and this really elevates the cost when buying quality products. This would be a huge hidden fee that I must factor in. From what I've read so far the purchase of adjustable rockers can be avoided with the 440Source Stealth heads if not milling them down a great amount.
     
  3. quikbird

    quikbird Well-Known Member

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    Pushrods about 200 and 440 has rockers for just a little more
     
  4. ykf7b0

    ykf7b0 Well-Known Member

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    Yes I saw the lower priced rockers with mixed reviews and I wouldn't be comfortable with anything other than Mancini, Comp, Isky, or Harland Sharp.
     
  5. quikbird

    quikbird Well-Known Member

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    They seem to be working fine in my 600hp stroker.
     
  6. ykf7b0

    ykf7b0 Well-Known Member

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    Congrats! I hope they remain that way for you.
     
  7. quikbird

    quikbird Well-Known Member

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    You and me both! :lol:
     
  8. Coyote

    Coyote Well-Known Member

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    If not, we'll fix it AGAIN! Stay together stuff!
     
  9. Gene chiodo

    Gene chiodo Member

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    Anyone try the ProMaxx heads boy the PRICE is RITE !!!!!!
     
  10. ykf7b0

    ykf7b0 Well-Known Member

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    I think you will be needing offset rocker arms with those.
     
  11. RKNRLR

    RKNRLR Well-Known Member

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    I went with Aeroflow heads, which im pretty sure are a direct copy of the Edelbrock RPM's, as all flow numbers are almost identical. I ended up having to (?) port match the heads, just needed a little clean up, and then did the same with my intake manifold (also edelbrock performer dual-plane). exhaust side also got a tickle to take away some sharp edges.

    Not sure on what +/- flow this would achieve, but im running with a .545/.545 comp cam, and .040 psitons, so im hoping for 550+ at the wheels.

    As for pushrods, my retainers on the rocker gear were worn as, so I ended up going with new roller rockers, and pushrods. blew the budget out abit, but I wasnt keen on pulling it out again.

    I hear along the grapevine Edelbrock are/have realeased a new head "victor" with even better flow
     
  12. BioMedTechGuy

    BioMedTechGuy Member

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    You should listen to and do what Jim La Roy says regarding anything that has to do with engines, period. I am finally getting some Trick Flow 240s and Jim was a big help in making a decision that many others have made, and been thoroughly pleased with.
    Thanks Jim.
     
    Goon likes this.

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