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565rwhp 504rwtq - LS7 C5 Z06 - all motor.

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Old 08-11-2007 | 09:46 PM
  #21  
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wow-nice
Old 08-12-2007 | 06:49 PM
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That sounded sick as all he!!
Old 08-12-2007 | 08:02 PM
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Originally Posted by RC45
I am running Ferrea dual valve springs.
levels?
I believe that you have Comp 921's on your heads if i am not mistaken....
Old 08-12-2007 | 08:07 PM
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Originally Posted by koolrayz
Good luck with those valve springs. LME put them in my last engine. Only a .635 lift cam and they broke with 1200 miles on them
Well assuming that Pecos used the same springs that MTI uses he should have known that they aren't good for much over .600 lift. As long as you don't go over they are a bad *** spring....
Old 08-12-2007 | 11:31 PM
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That video was beyond gay but will do a great job pissing off the exotic owners.

Nice #'s.
Old 08-12-2007 | 11:38 PM
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Originally Posted by NiceTry
I believe that you have Comp 921's on your heads if i am not mistaken....
Thats odd.. because I asked that we not run the 921's and paid for Ferreas... unless you pocketed the Ferreas for yourself and shoved 921's in while I wasn't looking...

Last edited by RC45; 08-12-2007 at 11:45 PM.
Old 08-12-2007 | 11:42 PM
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Originally Posted by Damian
That video was beyond gay but will do a great job pissing off the exotic owners.

Nice #'s.
Thanks for the compliment

You've produced many videos I take it then? Hopefully none of them are "gay" - what ever that means?

I didnt see any overtly homosexual references or large displays of rainbows... but then again, what appeals to some is completly lost on others.

Oh well, there's no pleasing all the people all the time.
Old 08-13-2007 | 09:09 AM
  #28  
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Originally Posted by RC45
Thats odd.. because I asked that we not run the 921's and paid for Ferreas... unless you pocketed the Ferreas for yourself and shoved 921's in while I wasn't looking...
The 921's are a much better spring, not to mention over double the price.... We usually use Ferreas on our heads but UPGRADE to 921's especially on a motor that is going to see high rpm, or a large cam
Old 08-13-2007 | 09:40 AM
  #29  
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Ferrea has a relatively new LS1/7 spring (last year or so) that Ferrea rates good to .700" lift capable. #S10061(?) but call them to verify #. They are more expensive than the Comp Cam 921's and installs @ 1.750"/ 155lb.

I bought a set for my LS7 cam setup but reconsidered and reduced the lift and high spring pressure when the stock LS7 rocker arms showed problems handling it. 921's are rated to .650" lift.
Old 08-13-2007 | 09:54 AM
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AWesome numbers congrats and only at 600miles I think that thing have a couple HP and TQ Left in it.

And thats 1HUGE STICK.lol
Old 08-13-2007 | 08:13 PM
  #31  
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Originally Posted by gtovan
Ferrea has a relatively new LS1/7 spring (last year or so) that Ferrea rates good to .700" lift capable. #S10061(?) but call them to verify #. They are more expensive than the Comp Cam 921's and installs @ 1.750"/ 155lb.

I bought a set for my LS7 cam setup but reconsidered and reduced the lift and high spring pressure when the stock LS7 rocker arms showed problems handling it. 921's are rated to .650" lift.
Those sounds like the springs that I got

Last edited by RC45; 08-13-2007 at 09:05 PM.
Old 08-13-2007 | 09:04 PM
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thats insane. nice car...
Old 08-14-2007 | 05:09 PM
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Great numbers. It was amazing to hear that thing idle - mean as hell, with good drivability.



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