REDLINE ON LS1?
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Staging Lane
Joined: Jul 2002
Posts: 62
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From: SANTA CLARITA,CALIFORNIA
REDLINE ON LS1? WHAT IS THE MAXIMUM RPM I CAN WIND OUT THE ENGINE IN EACH GEAR BEBORE DAMAGING THE ENGINE? IS IT 6,000 RPM? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
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From: Lake Zurich, IL
Re: REDLINE ON LS1? I revved to 6600 before I knew anything about our cars... and I got lucky no damage (that I know of... I really should do a leak down and compression test)
I'd be leary going over 6200 RPM.... the valve springs arent designed to go past that area and you may have valve float
I'd be leary going over 6200 RPM.... the valve springs arent designed to go past that area and you may have valve float
Re: REDLINE ON LS1? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by horist:
<strong>I revved to 6600 before I knew anything about our cars... and I got lucky no damage (that I know of... I really should do a leak down and compression test)
I'd be leary going over 6200 RPM.... the valve springs arent designed to go past that area and you may have valve float</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Umm.. my car lives above 6200. It's been like that for over a year.... BTW: How did you go over 6200? tuning?
<strong>I revved to 6600 before I knew anything about our cars... and I got lucky no damage (that I know of... I really should do a leak down and compression test)
I'd be leary going over 6200 RPM.... the valve springs arent designed to go past that area and you may have valve float</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Umm.. my car lives above 6200. It's been like that for over a year.... BTW: How did you go over 6200? tuning?
Re: REDLINE ON LS1? For you that are raising your rev limiter above the stock 6150, you are asking for trouble - unless you have cam'd and headed your cars. I can show you some bent push rods (I mean like 'L' shaped ones) by hitting 6500 rpm's.
You will gain nothing or very little by going beyond the 6150 on a stock motor. Most of the power bands on our cars are in the 5700-5900 rpm range.
This is a different story if you have put in a cam or different heads. I have seen some crazy numbers than.
Good luck guys.
David
<small>[ July 20, 2002, 11:10 AM: Message edited by: Navy David SS ]</small>
You will gain nothing or very little by going beyond the 6150 on a stock motor. Most of the power bands on our cars are in the 5700-5900 rpm range.
This is a different story if you have put in a cam or different heads. I have seen some crazy numbers than.
Good luck guys.
David
<small>[ July 20, 2002, 11:10 AM: Message edited by: Navy David SS ]</small>
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Launching!
Joined: Dec 2001
Posts: 231
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From: Wilmington, NC
Re: REDLINE ON LS1? I pull to 7000RPM when racing--the stock bottom end is OK up to about there--though I wouldn't recommend staying there for any length of time...
(I have moly PRods, and 918's w/Titanium retainers, as well...with a 226/.591/112 cam and mildly ported heads...)
On a stock car, moving the rev-limiter up is a waste of time, and is inviting disaster. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
(I have moly PRods, and 918's w/Titanium retainers, as well...with a 226/.591/112 cam and mildly ported heads...)
On a stock car, moving the rev-limiter up is a waste of time, and is inviting disaster. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
TECH Apprentice
Joined: Apr 2002
Posts: 373
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From: Hickory, NC
Re: REDLINE ON LS1? Blake hit the nail right on the head!! It's foolish to wind out a stock, non-cammed LS1 to 6,500 rpm's. Hell, our cars peak at 5,200 to 5,400 rpm's. There's absolutely no need in going that high with basically a stock set up.
Re: REDLINE ON LS1? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BlakeSS:
<strong>It is pointless to run a stock cammed LS1 above 6000 rpm.
These aren't 5.0 engines....
You are losing power in that range.
Blake</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Really.. Hmm.. how fast is your car?
Have you put your car on a dyno? .. The only thing that keeps may car from pulling is the limiter, goes to about 314 rwhp at throttle tip in and stays solidly there till it hits the limiter (6600). If I wasn't afraid of the valvetrain I would turn it to 7000.
<strong>It is pointless to run a stock cammed LS1 above 6000 rpm.
These aren't 5.0 engines....
You are losing power in that range.
Blake</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Really.. Hmm.. how fast is your car?
Have you put your car on a dyno? .. The only thing that keeps may car from pulling is the limiter, goes to about 314 rwhp at throttle tip in and stays solidly there till it hits the limiter (6600). If I wasn't afraid of the valvetrain I would turn it to 7000.
Staging Lane
Joined: Dec 2001
Posts: 61
Likes: 0
From: Lewisville, Tx
Re: REDLINE ON LS1? [/QUOTE]Really.. Hmm.. how fast is your car?
Have you put your car on a dyno? .. The only thing that keeps may car from pulling is the limiter, goes to about 314 rwhp at throttle tip in and stays solidly there till it hits the limiter (6600). If I wasn't afraid of the valvetrain I would turn it to 7000.[/QB][/QUOTE]
John,
Many, many times on the dyno. If your car pulls to the limiter than its obviously your converter helping you out. My M6 peaks horsepower *right at* 5550 rpm. After that it starts dying.
A stock cammed/converted A4 F-body won't gain hp over 5800 rpm trust me <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Blake
Have you put your car on a dyno? .. The only thing that keeps may car from pulling is the limiter, goes to about 314 rwhp at throttle tip in and stays solidly there till it hits the limiter (6600). If I wasn't afraid of the valvetrain I would turn it to 7000.[/QB][/QUOTE]
John,
Many, many times on the dyno. If your car pulls to the limiter than its obviously your converter helping you out. My M6 peaks horsepower *right at* 5550 rpm. After that it starts dying.
A stock cammed/converted A4 F-body won't gain hp over 5800 rpm trust me <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Blake
