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LQ4 RPM's?

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Old Feb 20, 2014 | 02:42 PM
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Default LQ4 RPM's?

What rpm is everyone safely turning their stock bottom end lq4's in a racing application? I will have all ARP bolts in the bottom end also...
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Old Feb 20, 2014 | 03:11 PM
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I turn my LQ9 to 6,800 on stock bolts. No issues as of yet, knock on wood.
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Old Feb 20, 2014 | 03:41 PM
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Yea i was thinking around 6500 or so, my cam will run up to 6800 but was thinking about setting the box at 6500...
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Old Feb 20, 2014 | 03:42 PM
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it will also be on the rev limiter a whole lot, going in a off road rig!
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Old Feb 20, 2014 | 03:46 PM
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What type of truck?
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Old Feb 20, 2014 | 04:17 PM
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im usally turn mine with stock bolts about 6800 on nos its 6900 and about 7100 at finish line
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Old Feb 20, 2014 | 05:19 PM
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Originally Posted by TurboBuick6
What type of truck?
it will be in a Jimmy Smith tube chassis rock bouncer
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Old Feb 21, 2014 | 10:16 AM
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I spin mine to 6700 on stock bottom end.
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Old Feb 22, 2014 | 11:20 AM
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I have the 99-00 lq4 if this makes any difference.
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Old Feb 22, 2014 | 01:28 PM
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Originally Posted by smorganjr
What rpm is everyone safely turning their stock bottom end lq4's in a racing application? I will have all ARP bolts in the bottom end also...

You understand the ARPs will pull the big ends out of round and require resizing right?

If the bolts are upgraded and big ends resized then give it hell. If you think you can just swap to arps in block and leave it at that, let us know how long before the oil turns copper colored. Been documented and measured the ARPs require resizing ARP even says so.
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Old Feb 24, 2014 | 04:06 PM
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Originally Posted by 96capricemgr
You understand the ARPs will pull the big ends out of round and require resizing right?

If the bolts are upgraded and big ends resized then give it hell. If you think you can just swap to arps in block and leave it at that, let us know how long before the oil turns copper colored. Been documented and measured the ARPs require resizing ARP even says so.
makes sense but im new to the ls family so what are you referring to as big ends? main caps?
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Old Feb 24, 2014 | 07:44 PM
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Rod caps.
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