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finally a quiet valvetrain :)

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Old 03-29-2012, 06:44 PM
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Default finally a quiet valvetrain :)

Well i was finally able to start my goat after 8 months of being down to a broken spring. the previous cam got trashed from a piece of spring so i ended up with a BRE cam and some additional port work on the 243's. here is a quick rundown of the current setup

stock LQ9 bottom end with .060 flycuts
243's ported from the valve guide down (done by Airflowdevelop)
custom BRE cam (23x/24x .64x/.65x degree'd in on 111lsa
stock ls7 lifters
stock rockers with .040 milled stands to correct the wipe
comp 3/8 pr's (7.250 with .030 preload)
ls6 intake and stock tb for now

i was pleasantly surprised when it fired up on the first crank. The valvetrain is quieter than my stock motor was. even after running a couple blasts it's still dead silent. i'm working on posting a quick vid.
Old 03-29-2012, 07:19 PM
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Old 03-29-2012, 07:23 PM
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Wish I could get mine to quite down, it's taptaptaptap typewriter sound every time I start it
Old 03-29-2012, 07:31 PM
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I was very hesitant to run .030 preload but it is way quieter than my old 230/242 with .055 preload. I thought with the size of this cam it would have been louder. I'm pretty happy
Old 03-29-2012, 07:52 PM
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What valve springs are you running?
Old 03-29-2012, 07:56 PM
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PAC 1519's installed at 1.795. Pressure is around 160/385 I believe.
Old 03-29-2012, 07:59 PM
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Originally Posted by outkast6991
PAC 1519's installed at 1.795. Pressure is around 160/385 I believe.
Thanks.



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