safe rpm
Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
My stock bottom end 2001 sees 7000 rpm often. Not been a problem yet.
I'm not guaranteeing a failure can't happen at or below that point, just sharing my experience.
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
I set my rev limited on the conservative side in my 460RWHP stock bottom end 346 build. 6600 RPM. No sense tempting fate.
On my forged 403 build I still leave it low at 6800RPM.
With 3.90's my shifts still leave me in the power band.
My $.02
Kevin
On my forged 403 build I still leave it low at 6800RPM.
With 3.90's my shifts still leave me in the power band.
My $.02
Kevin
Safety Car
Joined: May 2006
Posts: 3,799
Likes: 1
From: Northern Virginia
St. Jude Donor '08
Based on your profile you have a pre-2001 vette and one of the known issues with them are weak rod bolts. I would not venture to much past the stock rev limit unless you upgrade the rod bolts.
FYI - Katech makes a replacement rod bolt that is a simple swap out.
FYI - Katech makes a replacement rod bolt that is a simple swap out.
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Drifting
Joined: Mar 2005
Posts: 1,737
Likes: 0
From: Northern VA
Former Vendor
Joined: Jan 2007
Posts: 1,584
Likes: 17
From: Lubbock Tx
Wow, you guys rev your cars to the moon! SAfe for an extended period of time, nowhere near 7k. I personally don't like going over 6600 max if you want long term safety, and on my own cars I don't go past 6400
Last edited by SDPC; Apr 9, 2008 at 12:31 PM.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Umm I did mention 6500 UNLESS there are light wt sodium filled valves and better springs.
Now that said, GM did RPM tests a few times, a 1999 LS1 did 100 continuous hours at 6500 rpms with NO problems and the 2001 LS6 at 6900 rpms for 100 continuous hours with no problems
Now that said, GM did RPM tests a few times, a 1999 LS1 did 100 continuous hours at 6500 rpms with NO problems and the 2001 LS6 at 6900 rpms for 100 continuous hours with no problems
Drifting
Joined: Mar 2005
Posts: 1,737
Likes: 0
From: Northern VA
Umm I did mention 6500 UNLESS there are light wt sodium filled valves and better springs.
Now that said, GM did RPM tests a few times, a 1999 LS1 did 100 continuous hours at 6500 rpms with NO problems and the 2001 LS6 at 6900 rpms for 100 continuous hours with no problems
Now that said, GM did RPM tests a few times, a 1999 LS1 did 100 continuous hours at 6500 rpms with NO problems and the 2001 LS6 at 6900 rpms for 100 continuous hours with no problems
Melting Slicks
Joined: Jan 2008
Posts: 2,394
Likes: 0
From: Goldsboro NC
you crazy? stock ls6 redline is 6600....6200 is stock ls1....upgraded springs and cam....easy 6800 on 97-00's....7000 on 01 up due to the upgraded bolts...you guys worry too much...your only at 6800 for like 3 seconds anyways