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-   -   RPM limits (https://www.dieselbombers.com/chevy-gmc-duramax-01-04-lb7/44215-rpm-limits.html)

mudbilly 02-20-2010 02:54 AM

RPM limits
 
whats the highest rpm you can take a stock motor to without blowing it up.was woundering if a stock D-max would turn 4,000-4,500 rpm or would it blow:humm:

2500HeavyDuty 02-20-2010 07:52 PM

it can turn that fast, idk if the springs can take that much rpm for long periods of time :humm:, but i have ran mine up to the high 4000's several times goofing around on wet roads

R.Cassidy 02-20-2010 08:07 PM

idk but the turbo makes a cool noise if it gets up there lol bark!

mudbilly 02-21-2010 07:44 AM

ok so i could set the rev limited to say 4,000 rpm and it wouldnt blow the motor or hurt the turbo?whats the hights RPM any1s herd a stock motor turn? what are some of ya'll limter set at?

GmcLbz 02-21-2010 08:10 AM

I'm sure mine has seen 4500 or better, but not under a load. Stock valvetrain won't last above 4k.

BriteWhiteRam 02-22-2010 12:08 AM

4500?:pca1: thats rolling pretty darn good, a stock motor could handle 4000k for a few seconds at a time, but sustain it and your gona need a big magnet to pick up all the pieces.. LOL my LBZ stock spins 3500k, sounds pretty gnarly when its rolling that fast, 4500 would be wild:jump:

2500HeavyDuty 02-22-2010 12:16 AM

1 Attachment(s)
yup it does :)

i dont have a log but ive shot up to 5k once :f:

K50 02-22-2010 09:59 AM

Man I get scared when mine goes past 3200 sometimes under load... I can't imagine seeing 4000+rpm on that engine.

DieselCrawler 02-22-2010 11:14 AM

they almost sound like 2 stroke detroits at 4500.

dmaxtothemax 02-22-2010 06:50 PM

I like when mine puts you in your seat without a high rev... When i'm at 1800 rpms and it's about to break loose, is a good feeling...:jump: but, then again my tranny doesn't like the high rpms either... the clutch likes to hang up


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