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Old May 5, 2010 | 11:08 PM
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I have a 2000 camaro z28 and last fall i put a patriot 226/226 cam in it. I had a problem around 5k rpms where the engine would just rev up and feel like its bouncing of rev limitor so my tuner said to change the valve spings. I just put 243 heads decked .030 with patriot dual valve springs and the car still does it. I need help of what this could be. Rockers are stock, pushrods are stock, and i have full boltons.
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Old May 5, 2010 | 11:11 PM
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u need to get hardened pr's. thats not the problem i'm sure, but u still need them or you are gonna have far worse issues!! just my .02
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Old May 5, 2010 | 11:19 PM
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i know im going to be getting them asap but i really want to figure out whats going on first.
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Old May 5, 2010 | 11:21 PM
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maybe a tune issue??? vacuum leak?? someone will chime in soon
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Old May 5, 2010 | 11:40 PM
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I would get the rods get everything tightened down to spec your lash, preload and have it re-tuned.
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Old May 6, 2010 | 07:42 AM
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you think a tune will fix that the first time it was the same thing and the tuner said it had nothing to do with a tune
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Old May 6, 2010 | 08:57 AM
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I don't mean to hijack this thread but...

I have two sets of hardened push rods, one used with 3,000 miles on them, MINT condition & a set of unused ones from Texas Speed that I want to sell. If you need a set of 7.400.

$75.00 for the used ones

$90.00 for the new ones.


Good Luck With Your Project.
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Old May 6, 2010 | 11:18 AM
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So its like you are hitting the limiter? or you are hitting the limiter? More than likely a tune issue.
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Old May 6, 2010 | 11:46 AM
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From the discription sounds more like a slipping clutch or tranny.
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Old May 6, 2010 | 11:58 AM
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Originally Posted by GT Griller
From the discription sounds more like a slipping clutch or tranny.
Kinda what I was thinking.
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Old May 6, 2010 | 01:18 PM
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Originally Posted by GT Griller
From the discription sounds more like a slipping clutch or tranny.
Thats what im thinking too.

OP, is the engine noisey at idle? Like a lot of clacking/sewing machine noise? The pushrods arent the greatest thing to have in there, but if they were bent it usually makes noise.

Good luck
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Old May 6, 2010 | 03:13 PM
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No doesn't sound too noisy and its not getting up to redline where my rev limitor is set at. It shifts perfect everyway except when floored. I'm so lost I don't know what it is
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