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Manley H Beam rods? How much HP?

Discussion in 'The Blower Bistro' started by DoomsDay, Dec 5, 2007.

  1. DoomsDay

    DoomsDay Slayer of Gods... Established Member

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    I've done the usual reading and searching through threads, and i've been to the website and read the HP ratings which i know plenty of people have exceeded the "700" hp listed rating.


    I'm going to be having my motor built in january and need to get an idea of what most people are making on these rods? Right now im either having to pick between these and the Billet I beams.

    The current setup is a custom single turbo setup running a Single GT42-76.

    The I beams will definately get me over the 1000rwhp mark but what about the H beams? There is a conciderable price difference between the two and rightly so concidering.

    Will the H beams handle 850rwhp-900rwhp or would that put them on borrowed time even with a good tune? I'd like to hit the 1k mark but I'f i can do with with the H beams is unknown to me.

    Any help would be appreciated
     
  2. Blown02

    Blown02 New Member Established Member

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    mine made 815rwhp.. they only rated my h beams to 700 flywheel hp.. i was gonna take them to 1000rwhp, but I blew a headgasket.. if i were u i would go ahead and do the billet rods.. thats what Im runnin now..
     
  3. DoomsDay

    DoomsDay Slayer of Gods... Established Member

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    Was quoted they were a 1200 upgrade over the Hbeams :(

    I figure if nothing else i could run the h beams to around 850rwhp and then swap to the I beams later
     
  4. droptopsnake01

    droptopsnake01 N/A FTW! Established Member

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    the shop im associated with has been running a eagle H beam on their race car for over 2 years. Making over 1000rwhp the whole time.

    Its up to you, i personally think a H beam will be fine.
     
  5. Blown02

    Blown02 New Member Established Member

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    h beam will prob be fine.. but to "swap"out the h beams for billet rods is no easy task.. not only does the motor have to be pulled but the motor has to be disassembled, re-balanced, etc.etc.etc. and will cost a ton!
    u can get forged h beams for $350 and billet ones for $1,200.
     
  6. BLWN32V

    BLWN32V New Member Established Member

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    get the I beams and you won't ever have to worry about upgrading!!!!!
     
  7. Nvr_Spds

    Nvr_Spds Pushrod > 4v Established Member

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    I would say go with the billets, but if you want to save some money, and run H-beams, with the best rod bolts you can.
     
  8. LS1PUSSOUT

    LS1PUSSOUT Banned

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    if your looking for 1000hp I would get those I beams. Throw some nice pistons on them and you never have to think about the bottom end again...
     
  9. SN8KBYTE

    SN8KBYTE New Member Established Member

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    I sleep better at night with the billet Manley's. Spend the extra money now and you won't be sorry later.
     
  10. DoomsDay

    DoomsDay Slayer of Gods... Established Member

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    Yeah i have the feeling im gonna have to suck it up and go with the Billets too
     
  11. Tunnelvision

    Tunnelvision New Member Established Member

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    With 1000rwhp, you'll need all you can get . You may want to have those Manley billets blessed with holy water too.
     
  12. DoomsDay

    DoomsDay Slayer of Gods... Established Member

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    Meh thats not near the max rating for the I beams. It's like 1200rwhp or so. I could always step up to 300m's though lol
     
  13. TheSVTKid

    TheSVTKid New Member

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    It's all about having a good tune.....

    I have seen Manley H beams hold up to 1700hp for 2+ years on a full on race car.... Then a set of Eagle H beams hold the same.

    But if it would have been detonating.... well that would have been the end of them instantly.

    I know countless cars making 800+ rwhp, with NO issues with the H beams.


    EA
     
  14. 69gt4speed

    69gt4speed Svt God of All Established Member

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    I thought the h beams use 3/8 bolts and the good i beams used 7/16? That's quite a difference in equal quality bolts. Since it is being built, apart etc. I'd do the 7/16's.
     
  15. droptopsnake01

    droptopsnake01 N/A FTW! Established Member

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    make sure you get a quality rod bolt
    arp 2000's will do the trick
     
  16. Smokey1226

    Smokey1226 Dirrty North Established Member

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  17. DoomsDay

    DoomsDay Slayer of Gods... Established Member

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    Thanks for the info guys, any info is definately appreciated.

    Anyone used these for over 900rwhp?
     
  18. droptopsnake01

    droptopsnake01 N/A FTW! Established Member

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    we have had a race car w/ H-beam making over 1000rwhp thru a powerglide for 2 years with those rods.
     
  19. LS1PUSSOUT

    LS1PUSSOUT Banned

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    Whats the difference between MMR H beam rods (made by Manley) and the standard Manley brand H beam rods? They look the same. I have been wondering this for awhile....
     

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