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5.3 top rpm

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Old 07-11-2007, 11:46 AM
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Default 5.3 top rpm

Right now my shift point is 5800 rpm's on my 5.3.I was wondering what I would need to change to run it up to 6000?I was thinking valve springs and push rods or is all this a waste of time with a stock cam?Does this cam fall off after 5800[anyone with dyno runs]?
Old 07-11-2007, 11:47 AM
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My best time was shifting at 6100rpms...
And that was a stock 5.3.. see sig...
Old 07-11-2007, 12:19 PM
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Are a lot people running stock internal 5.3's up to 6000?
Old 07-11-2007, 12:36 PM
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The stock internals can handle more than 6000, but the stock cam and intake aren't gonna do much for you above there.
Old 07-11-2007, 12:37 PM
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I shift at almost 6100 (sometimes 6050 or 6095 or 6105) It doesn't really make much power that high stock but it DOES put your 2nd gear shift at a higher RPM. Thats why I do it, seems to work
Old 07-11-2007, 12:42 PM
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I was shifting mine at 7k. It did burn up a wrist pin though. It took a while for it to happen. The bottom end will hold just fine with just some ARP bolts.

I have some if anyone would like them. They are the good ones, ARP2k rod bolts. PM me so we on't jack the thread.
Old 07-11-2007, 02:19 PM
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Originally Posted by truckmann
The stock internals can handle more than 6000, but the stock cam and intake aren't gonna do much for you above there.


You can rev up to 6400 safely but i personally wouldnt do it. Rod end bolts begin to fail around 6500 RPM iirc.
Old 07-11-2007, 03:06 PM
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So its a bad idea to shift my cammed 4.8 at 6750 with stock rod bolts?
Old 07-11-2007, 03:13 PM
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Originally Posted by Sam88Gta1
So its a bad idea to shift my cammed 4.8 at 6750 with stock rod bolts?
it'll shift at 8000 at least once
Old 07-11-2007, 03:19 PM
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i shift at 6000 rpms. its perfect with my ls1 cam


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