7000rpms on a stock bottom end

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Sep 17, 2002 | 03:33 PM

Skizzy

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From: Woodway, TX USA

7000rpms on a stock bottom end

how long will a stock bottom end hold up to 7000-7200rpms.

i'm talkin at the track as well as a little street racin and on a dyno.

thanks in advance

[ September 17, 2002, 03:34 PM: Message edited by: Skizzy ]

Sep 17, 2002 | 03:43 PM

NataSS Inc

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From: Estero, FL

Re: 7000rpms on a stock bottom end

Should do fine for what your talking about. I wouldnt recommend it though. I just put new bearings and rod bolts in on mine and that should be able to handle the abuse I am planning on putting it through

Sep 17, 2002 | 03:52 PM

verbs

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From: At the office

Re: 7000rpms on a stock bottom end

I've been told that 2001+ bottom ends are a bit more durable than previous years. Not sure if there is any truth to that or not.

I've been revving to 6800-7000 on a stock bottom end on a few occasions my self...but usually for a rare racing event or playing around.

Sep 17, 2002 | 04:11 PM

DenzSS

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From: Kansas City, MO

Re: 7000rpms on a stock bottom end

High rpms will kill an engine faster than high hp. Like most things, if you're spinning 7K+ it isn't a matter of if the bottom end will go, but when it will go.

Sep 17, 2002 | 05:54 PM

MUSTANGEATER

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From: Belleville, IL

Re: 7000rpms on a stock bottom end

Yea denzss is right.... I wouldn't go past 6500 with a stock bottom end just to be safe

Sep 17, 2002 | 07:34 PM

VipZ28

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From: Houston, TX

Re: 7000rpms on a stock bottom end

Man That's BS, running it at 6500 all day wil kill it too. The stock bottom end CAN last well at the higher rpms given that it's not sprayed or some ungodly compression ratio, and that the rod bolts are upgraded to AARP's. The guy asked for help not people being wussies <img border="0" alt="[fight]" title="" src="graemlins/gr_punch.gif" />

<img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> hehehe Moral: Upgrade the rod bolts and your oil pump and spin to your 7,000

[ September 17, 2002, 07:35 PM: Message edited by: VipZ28 ]

Sep 17, 2002 | 09:05 PM

GeorgeC

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From: Melbourne, FL

Re: 7000rpms on a stock bottom end

<blockquote>quote:<hr />Originally posted by VipZ28:
the rod bolts are upgraded to AARP's. <hr /></blockquote>So what do retired people have to do with LS1 connecting rod bolts? <img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" />

Seriously, I wouldn't expect a stock shortblock to last a long time without a few upgrades. The stock rod bolts do seem to be a weak link. That's what failed on my old motor...

With a good set of rod bolts, I think the motor would live for a good while @ 7000rpm. The stock rods and pistons are heavier than quality aftermarket parts, which also has a detrimental affect when you're talking buzzing it up to 7000...

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Sep 18, 2002 | 05:10 AM

Skizzy

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From: Woodway, TX USA

Re: 7000rpms on a stock bottom end

thanks for all the info guys. i was plannin on gettin ARP rod bolts, hardened pushrods..etc along with a cam of coarse.

once again thanks for the insight.

Sep 19, 2002 | 04:58 PM

#10

MIGHTYMOUSE

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From: Virginia

Re: 7000rpms on a stock bottom end

so then it would not be a stock bottom end.. maybe change the title to ligthly strenghtened bottom end. stock means stock rod bolts and no way in heck i would use those past 6500 EVER.

other than the rod bolts, the rods(from what i heard)get very bad *harmonically speaking* above 6k.

Sep 19, 2002 | 06:02 PM

#11

One Monkey

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From: Houston

Re: 7000rpms on a stock bottom end

The answer too that question is no one knows!

The motor will one day come too an end buzzing over 7000RPM. RPM takes motors apart fast. but as too say when. that's hard.

We had over 100 passes. On out STOCK!! bottom end car turning 7500RPM even made a 7800RPM
pass. motor never broke. there are guys who blew thee motor up at 6800RPM.

[ September 19, 2002, 06:03 PM: Message edited by: One Monkey ]