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  1. #1
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    Default Ultra pro mags do not fit Manley 1.55 springs

    My comp Ultra Pro mags don't fit with my Manley 1.55 springs unless I make the push rod insanely long then they ride on the outer tip of the valve does anybody know of a good set of rocker arms that will clear the springs Has anybody else ran into this issue?
    forged 383,9.6:1,280xfi, trickflow heads,edlebrock lt4 intake,moser 12 bolt w/373

  2. #2
    The FABRICATOR!


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    Where is the interference? If it's in the raduis where the body of the rocker and arm is, I have seen the rocker clearanced (ground) to fit. Doesn't take much but not for the faint of heart.
    Chris
    1985 Monte Carlo SS
    Mods: 9:1 383 LT1, Ported Trick Flow heads, D1SC Procharger, 4L80E, 3.50 9"
    Check out the M122 MCSS build thread here!

  3. #3
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    Yeah its in the radius that's what I thought just hate to take a dremel to a new 300 dollar set of rocker arms I wonder if Crower enduros will fit without clearancing
    Last edited by tleed; 06-15-2015 at 07:35 PM.
    forged 383,9.6:1,280xfi, trickflow heads,edlebrock lt4 intake,moser 12 bolt w/373

  4. #4
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    What model ultras are they or ratio, stud, sa/nsa. There are several rockers that will clear 1.55 spring.
    If you go to summit and bore down into options far enough it will finally give you a max spring diameter option.
    It should be there at the very top since it is a critical spec but their option structure is realy goofy for many part types.

  5. #5
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    1605-16 7/16 1.6 nsa comp says they will clear 1.55 springs but they do not in this application
    Last edited by tleed; 06-15-2015 at 07:36 PM.
    forged 383,9.6:1,280xfi, trickflow heads,edlebrock lt4 intake,moser 12 bolt w/373

  6. #6
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  7. #7
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    Thanks for the list
    forged 383,9.6:1,280xfi, trickflow heads,edlebrock lt4 intake,moser 12 bolt w/373

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