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Go Back   Chevy and GMC Duramax Diesel Forum > Chevy / GMC Duramax 01-04.5 LB7 Forums > 01-04.5 LB7 Performance Parts Discussion
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01-04.5 LB7 Performance Parts Discussion Discussion of Performance Parts For the 01-04 LB7 Duramax Trucks No Advertising

 
       

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Old 11-05-2009, 08:04 PM   eBay Motors   #1 (permalink)
justinwilliamskx
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4400rpm

Lookin at the quad stealth 2 race and it can raise you revlimiter up to 4400 now i know that there is no real power up there wiht out lots of air but im just curious it its safe to run the engine up that high for the ocasional race and such
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Old 11-05-2009, 08:10 PM   eBay Motors   #2 (permalink)
Six-Gun-Todd
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Not without a built motor and some attention to the cylinder heads......valve float comes on pretty quick around 4000+ rpm.
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Old 11-06-2009, 06:43 AM   eBay Motors   #3 (permalink)
TYREBOYZ_DEMAXIN
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i would recommend doing full race heads for 3800RPMs and above..
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Old 11-06-2009, 07:35 AM   eBay Motors   #4 (permalink)
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yeah not much use going that high unless you do the upgrades as stated above and possibly a new turbo too.
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Old 11-06-2009, 07:57 AM   eBay Motors   #5 (permalink)
RedBowTies88
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yea and even though that tuner raises the rev limiter that high you wont see those rpm's unless you rev in neutral...even then it prob wont get that high
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Old 11-06-2009, 07:59 AM   eBay Motors   #6 (permalink)
Meyerperformance
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You can see them, I have seen over 4k with the PPE. It was not a very comfortable feeling. I am on a on ramp getting on the istate.
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Old 11-06-2009, 08:11 AM   eBay Motors   #7 (permalink)
Hondarider552
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stock balancer does not like much above 4k.
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Old 11-06-2009, 08:13 AM   eBay Motors   #8 (permalink)
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Neither does my eyes.
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Old 11-06-2009, 08:41 AM   eBay Motors   #9 (permalink)
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4400 is way too high IMO, does the 6.6 even make that much more power up there to justify the risk?
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Old 11-06-2009, 08:43 AM   eBay Motors   #10 (permalink)
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idk about power, probably not, but my motor gets quieter after 4k...
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