GT500 / FORD GT Rocker arms - Super sale!!

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  1. #1
    Supporting Vendor Array Mod Mustang Racing's Avatar
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    Default GT500 / FORD GT Rocker arms - Super sale!!

    MMR is running a sale on the Ford GT / GT500 Roller rockers for just $189.99 per set of 16!!!!


    More info: QTY 16 Ford GT Supercar /GT 500 Roller Rockers A great upgrade for ANY 93-2010 2V or 4V, the stiffer body means less deflection which makes more HP. A must for that serious build and highly recommended for Trick flow 2V heads due to the poor roller rocker oiling . No modification needed, fits all 2v AND 4v Direct replacement for Ford GT and GT 500. Brand new Genuine Ford/Ford Racing. Same as Ford Racing M-6529-MSVT


    Order now: http://www.modularmotorsportsracing....roducts_id=491



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  3. #2
    Senior Member Array Wicked46's Avatar
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    Wow, I can make moar horse powers!!??

  4. #3
    Supporting Vendor Array Mod Mustang Racing's Avatar
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    Correct! Valve train deflection robs power, the more aggressive the camshaft the more power that can be lost. Another plus with these rockers is that they are lighter than the 03/04 Cobra std rocker, which also has performance benefits!

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    Which lash adjusters do you use with these?

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    Supporting Vendor Array Mod Mustang Racing's Avatar
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    All of the factory lifters/lash adjusters are compatible with these.

  8. #6

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    how do these compare to 03/04 rockers? (dimensionally, materials variances, etc.)

    I assume there is a difference in wall thickness or something?

  9. #7
    Supporting Vendor Array Mod Mustang Racing's Avatar
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    Same material, lighter weight, increased rocker to retainer clearance

  10. #8

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    Quote Originally Posted by Quicktime_GT View Post
    how do these compare to 03/04 rockers? (dimensionally, materials variances, etc.)

    I assume there is a difference in wall thickness or something?
    I picked up a set that will be waiting for me when I get home this evening. Will get comparison pics and weights in the next day or so if anyone is curious.

  11. #9
    Supporting Vendor Array Mod Mustang Racing's Avatar
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    Here is a comparison pic of some of the rockers out there (Ford GT in the center and FR500 on its right with the stocker on the far right) :




  12. #10

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    Added some more info on this page of my build thread:

    https://www.modularfords.com/threads/...=1#post2144377

    Definitely a nice price, by the way!

    Side-by-side comparison, but the rest is in that thread:

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    Last edited by jrgoffin; 11-20-2015 at 05:13 PM.

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    Supporting Vendor Array Mod Mustang Racing's Avatar
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    bump ttt

  14. #12
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    To MMR: When using the GT500 (exhaust) lash adjusters in C heads or any other modular head for that matter, are the GT500 followers required? I've read that the heads will lose oil pressure if GT500 followers aren't used with GT500 lash adjusters - but the logic has never been explained. I'm wondering if a shop such as yours has experience with this?

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    The Orifice size is smaller on the GT500 follower, meaning it will restrict oil compared to using a std C rocker with a GT500 lifter. We have run them both ways however and never seen a measurable loss or increase.

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    Quote Originally Posted by 2001fobra View Post
    To MMR: When using the GT500 (exhaust) lash adjusters in C heads or any other modular head for that matter, are the GT500 followers required? I've read that the heads will lose oil pressure if GT500 followers aren't used with GT500 lash adjusters - but the logic has never been explained. I'm wondering if a shop such as yours has experience with this?
    There are no benefits or dangers of using the gt adjuster with 4.6 followers. However, using the GT followers on 4.6 adjusters does provide for a more stable valvetrain. Hp output in a sub 7000rpm combo using low pressure valve springs is minimal. The higher the spring pressure and RPMs the greater their benefit. With that, the biggest gain I've seen on a 4.6 was 6 hp at 8100rpm, below 7000 on the same combo the power did not increase.

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    bump ttt

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