Ideal Shift RPM - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

TX Pony Killer · 10-05-2010, 09:00 AM

I did a search and didn't find anything on this, but what are the ideal rpm to shift at in a 1/4 mile? This would be for a stock setup.

Thanks, and kick me if I missed another thread about this...

alrox · 10-05-2010, 10:14 AM

6400RPM for your LS3.

Blueclyde · 10-05-2010, 10:31 AM

I would say 5900 without any power drop off.

TX Pony Killer · 10-05-2010, 10:32 AM

Quote:

Originally Posted by alrox

6400RPM for your LS3.

Thanks... that is exactly what I needed.

Bob Cosby · 10-05-2010, 10:34 AM

There is no single, "ideal" shift rpm. The idea is to maximize the average HP in each gear. This means (among other things) that the optimum 1/2 shift point will be a bit different than the optimum 2/3 shift point, which is also somewhat different than the 3/4 shift point. Also, two people shifting the exact same car will have different shifting styles and different reaction times (as it relates to the coordinated shifting of the transmission) and thus will start the shifting process at a somewhat different rpm.

So, how is the "optimum" shift point determined? Easiest way is with a dyno sheet from your car and a shift point calculator (do a net search for one), and then with practice.

VERY GENERAL rule of thumb? 500-700 rpm above peak, HP.

TX Pony Killer · 10-05-2010, 10:44 AM

Quote:

Originally Posted by Bob Cosby

There is no single, "ideal" shift rpm. The idea is to maximize the average HP in each gear. This means (among other things) that the optimum 1/2 shift point will be a bit different than the optimum 2/3 shift point, which is also somewhat different than the 3/4 shift point. Also, two people shifting the exact same car will have different shifting styles and different reaction times (as it relates to the coordinated shifting of the transmission) and thus will start the shifting process at a somewhat different rpm.

So, how is the "optimum" shift point determined? Easiest way is with a dyno sheet from your car and a shift point calculator (do a net search for one), and then with practice.

VERY GENERAL rule of thumb? 500-700 rpm above peak, HP.

So on a stock LS3, where is the peak HP?

8cd03gro · 10-05-2010, 03:28 PM

5900 rpm. I would shift about 6400-6500.

seddon · 10-05-2010, 03:48 PM

Doesn't the LS3 start to redline at 6200 rpm?

I usually shift at 6k just not to take the motor into red line. Am I wrong for doing this?

*DGthe3* · 10-06-2010, 01:55 AM

moved to driving techniques forum

jordan 572 · 10-10-2010, 09:53 PM

ls3 redlines at 6600

10-05-2010, 09:00 AM	#1
TX Pony Killer Drives: 2011 2SS RS LS3 RJT Join Date: Sep 2009 Location: Houston, TX Posts: 145	Ideal Shift RPM I did a search and didn't find anything on this, but what are the ideal rpm to shift at in a 1/4 mile? This would be for a stock setup. Thanks, and kick me if I missed another thread about this...

10-06-2010, 01:55 AM	#9
DGthe3 Moderator.ca Drives: 05 Grand Am GT Join Date: Jul 2007 Location: Niagara, Canada Posts: 25,372	moved to driving techniques forum __________________ Note, if I've gotten any facts wrong in the above, just ignore any points I made with them __________________ Originally Posted by FbodFather My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors...... ........and HE WOULD KNOW!!!! __________________ Camaro Fest sub-forum

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10-05-2010, 10:14 AM	#2
alrox Drives: corvette Join Date: Apr 2009 Location: usa Posts: 374	6400RPM for your LS3.

10-05-2010, 10:31 AM	#3
Blueclyde Drives: 2023 ZLE Join Date: Jun 2009 Location: Detroit Posts: 1,717	I would say 5900 without any power drop off.

10-05-2010, 10:34 AM	#5
Bob Cosby Drives: 2010 Vette Join Date: Jun 2010 Location: Knoxville, TN Posts: 572	There is no single, "ideal" shift rpm. The idea is to maximize the average HP in each gear. This means (among other things) that the optimum 1/2 shift point will be a bit different than the optimum 2/3 shift point, which is also somewhat different than the 3/4 shift point. Also, two people shifting the exact same car will have different shifting styles and different reaction times (as it relates to the coordinated shifting of the transmission) and thus will start the shifting process at a somewhat different rpm. So, how is the "optimum" shift point determined? Easiest way is with a dyno sheet from your car and a shift point calculator (do a net search for one), and then with practice. *VERY GENERAL* rule of thumb? 500-700 rpm above peak, HP.

10-05-2010, 03:28 PM	#7
8cd03gro Drives: 2005 STi corn fed Join Date: Jul 2008 Location: Colorado Posts: 2,997	5900 rpm. I would shift about 6400-6500.

10-05-2010, 03:48 PM	#8
seddon Drives: 2017 ZL1 Join Date: Dec 2009 Location: NYC Posts: 1,165	Doesn't the LS3 start to redline at 6200 rpm? I usually shift at 6k just not to take the motor into red line. Am I wrong for doing this?

10-10-2010, 09:53 PM	#10
jordan 572 Drives: none Join Date: Jul 2008 Location: MN Posts: 1,720 View My Garage	ls3 redlines at 6600