Educate me on 5.9 Magnum Roller Rockers

Discussion in 'Magnum Engine Swaps' started by Scottd9990, Dec 6, 2017 at 6:11 PM.

  1. Scottd9990

    Scottd9990 Well-Known Member

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    I am interested in Roller Rockers for my 5.9 Magnum engine (1999) I have a mild build with EQ Heads, Comp Cam (506 lift) Airgap intake, Dougs Headers! Educate me on best roller rockers for Magnum 5.9. I see the Hughes Engines sets. Pretty Expensive!! Looking best bang for buck.

    Scott
     
  2. Lelo Dart

    Lelo Dart *

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    If your OE are in good condition you can use those.
    I think the ones I got were Melling brand not sure though.
     
  3. Krooser

    Krooser Reform School Graduate

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    Some food for thought....

    roller rockers vs contact tip rockers - Speed Talk
     
  4. jbc426

    jbc426 Well-Known Member

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    Give Mike a call at B3 Racing. He knows rocker arms and proper installation.
    B3 Racing Engines LLC - Performance Engine Building and Mopar Valvetrains
     
  5. dartfever

    dartfever Well-Known Member

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    Unless you are looking to increase the ratio, I'd spend your money elsewhere. If you are at .506 lift with your cam now, and should be 1.6's with the magnums, going to 1.7's might require some work on the heads to accommodate the higher lift of .537.
     
  6. Scottd9990

    Scottd9990 Well-Known Member

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    Not really looking to go more lift, just less friction. Already using roller cam (Comp) and 1.6 ratio rockers (Stock) which work very well up to 6200 or so. Just looking to free up some extra HP if I go roller rockers. Yes? No? Also looking at possible E85 conversion. I heard from local Drag guys they are getting 30-40 RW HP jumps on E85.

    My combo works great, but looking for a bit of an edge for next season racing SCCA CAM Class.
     
  7. dartfever

    dartfever Well-Known Member

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    Need to watch the latest engine master episode. Very interesting outcome.
     
  8. RustyRatRod

    RustyRatRod Just another dumbass. FABO Gold Member Technical Editor

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    The ones from Hughes are the best, IMO. Just look at them. That's all it should take.
     
  9. 70aarcuda

    70aarcuda Master Hoader of SBM FABO Gold Member

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    hughes makes a very nice set that converts to a shaft style rocker.....but a 3/8 stud small block chevy rocker will work on a magnum. A stud 5/16 conversion to 3/8 stud is used....then pick your favorite brand of rocker...aluminum or stainless
     
  10. Scottd9990

    Scottd9990 Well-Known Member

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    Thanks!!!