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03 lq9 question

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Old Mar 8, 2012 | 09:45 AM
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Default 03 lq9 question
what is the most power you can put on a stock rotating assembly? or if you have a lq9 what kind of power are you making on a stock motor and whats your build?
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Old Mar 8, 2012 | 09:55 AM
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All depends on how much time/money you want to put into it...stock bottom end should be able to hold 500+ fwhp. I think they were rated somewhere just under 300hp
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Old Mar 10, 2012 | 02:48 PM
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oh i heard it should handle about 700, but i also heard the everything should be good to around 800 except the pistons?
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Old Mar 10, 2012 | 04:14 PM
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I would atleast put a good set of rod bolts in at or over 500, might be able to hold more, but 500 is safe
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Old Mar 10, 2012 | 06:45 PM
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The weak link is in the pistons, GMPP suggests no more than 550 hp on stock pistons, however the LSA uses the same material and they now make 580 hp on boost with a 5yr/100,000 mile warranty. I'd still change rod bolts though.
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Old Mar 10, 2012 | 09:50 PM
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I've seen one of my friends run 10's for years with a big cam and big n2o shot in his 98t/a with stock rod bolts....but it eventually grenaded lol

Some get lucky, but some don't
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Old Mar 11, 2012 | 12:10 PM
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i did order arp rod bolts, but i was expecting with my new setup to be around 650, so i was just getting some second opinons
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Old Mar 11, 2012 | 12:46 PM
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would help if you listed the set up you are going with.
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Old Mar 11, 2012 | 05:59 PM
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my set up is p1SC-1 at 10 pounds, i also have a preety big cam (239/251 .625 .632 .115) turbo 400 and 4.10 12 bolt of course lq9 with rod bolts
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Old Mar 11, 2012 | 06:03 PM
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It's well known that the weak link are the rods. They seem to bend around 900 hp. The LQ4 rods will take 800.
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Old Mar 11, 2012 | 06:07 PM
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yea i knew the rods are safe but im now concerned about the pistons
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Old Mar 11, 2012 | 11:11 PM
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Originally Posted by GMCtrk
It's well known that the weak link are the rods. They seem to bend around 900 hp. The LQ4 rods will take 800.
Usually the weak link is the rods (in just about any OEM engine), however the pistons are only "rated" at 550 (800/900 for rods, crank will take just about anything you can throw at it).
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