Top of 1st gear... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

MEDISIN · 01-18-2010, 05:53 PM

Does anyone else notice a bit of a lull between 4,000 and 6,000 RPM? Not like the engine revolutions aren't rapidly climbing, because they are, but the car's acceleration seems to lull in 1st in this range. Then comes 2nd and anywhere between 3,000 and 6,000 accelerates rapidly as you would expect.

So I'm wondering, would it be faster in say a 1/4 mile run to shift to second between 4,000 and 5,000 leaving more room for 2nd gear to pull?

Obviously never done a timed run in the SS, just curious if others have noticed this.

EDIT: Should have prefaced LS3, M6 transmission.

ffrcobra_65 · 01-18-2010, 10:49 PM

takes a lot to get a 3900 pound going then when it gets going...

*DGthe3* · 01-19-2010, 12:50 AM

Quote:

Originally Posted by MEDISIN

Does anyone else notice a bit of a lull between 4,000 and 6,000 RPM? Not like the engine revolutions aren't rapidly climbing, because they are, but the car's acceleration seems to lull in 1st in this range. Then comes 2nd and anywhere between 3,000 and 6,000 accelerates rapidly as you would expect.

So I'm wondering, would it be faster in say a 1/4 mile run to shift to second between 4,000 and 5,000 leaving more room for 2nd gear to pull?

Obviously never done a timed run in the SS, just curious if others have noticed this.

EDIT: Should have prefaced LS3, M6 transmission.

Are you sure its not traction control kicking in?

mtcwby · 01-19-2010, 01:30 AM

Quote:

Originally Posted by DGthe3

Are you sure its not traction control kicking in?

That's what I was thinking too. Maybe it's retarding the timing a bit to keep from spinning.

SS 376 · 01-19-2010, 12:12 PM

Quote:

Originally Posted by DGthe3

Are you sure its not traction control kicking in?

That's what I thought. Is there a flashing light that says when TCS is retarding timing? I can't remember.

rodimus prime · 01-19-2010, 12:51 PM

Maybe the cars reading some knock and pulling timing. Have to log it to find out.

toehead93 · 01-19-2010, 01:43 PM

Yeah, something seems off. My car pulls like mad from 3,500rpms-5,500rpms in every gear.

SleepWarz · 01-19-2010, 05:46 PM

My car does the same thing with TC on depending on the conditions.

However it pulls like a train between 3000 and 5000. Need a reset button for my internal organs

Mr Smith · 01-19-2010, 05:56 PM

The "acceleration" or pulling you describe would be torque. I noticed that torque on the LS3 drops off at about 4500 -5000 rpm. Right around that RPM range the motor seems to harmonize and run smoother as well.

This is true for any motor..Even though the HP keeps increasing with more PRM, the torque falls off at a certain point thus causing the car to feel as if its not accelerating as hard.

*DGthe3* · 01-19-2010, 07:36 PM

Quote:

Originally Posted by Mr Smith

The "acceleration" or pulling you describe would be torque. I noticed that torque on the LS3 drops off at about 4500 -5000 rpm. Right around that RPM range the motor seems to harmonize and run smoother as well.

This is true for any motor..Even though the HP keeps increasing with more PRM, the torque falls off at a certain point thus causing the car to feel as if its not accelerating as hard.

The problem is that he says it feels fine in 2nd but not in 1st. The engine should be making the same power and torque at WOT at 5000 RPM regardless of the gear, unless there is some sort of control mechanism kicking in.

Mr Smith · 01-20-2010, 04:31 PM

Quote:

Originally Posted by DGthe3

The problem is that he says it feels fine in 2nd but not in 1st. The engine should be making the same power and torque at WOT at 5000 RPM regardless of the gear, unless there is some sort of control mechanism kicking in.

I think hes feelin things....

flyby · 01-24-2010, 08:51 AM

I have an LS3 and I've never noticed any lag or drop off anywhere no matter the rpm until the limiter kicks in. I agree, this car should come with a driver internal reset button, or at least a permagrin wiper. This car is sick fast and quick.

MEDISIN · 02-08-2010, 08:56 AM

Quote:

Originally Posted by Mr Smith

The "acceleration" or pulling you describe would be torque. I noticed that torque on the LS3 drops off at about 4500 -5000 rpm. Right around that RPM range the motor seems to harmonize and run smoother as well.

This is true for any motor..Even though the HP keeps increasing with more PRM, the torque falls off at a certain point thus causing the car to feel as if its not accelerating as hard.

Thanks for all the replies. I think this statement above makes the most sense. The torque "feel" levels off as you said then when I drop it into second and the RPM's drop to 4k or whatever the "torque feel" comes back in. I'll try with TC off and see if that makes a difference but I'm not getting any indicators or warnings on the dash.

01-18-2010, 05:53 PM	#1
MEDISIN Drives: 2011 CTS-V Sedan Join Date: May 2009 Location: Chapel Hill, NC Posts: 1,505 View My Garage	Top of 1st gear... Does anyone else notice a bit of a lull between 4,000 and 6,000 RPM? Not like the engine revolutions aren't rapidly climbing, because they are, but the car's acceleration seems to lull in 1st in this range. Then comes 2nd and anywhere between 3,000 and 6,000 accelerates rapidly as you would expect. So I'm wondering, would it be faster in say a 1/4 mile run to shift to second between 4,000 and 5,000 leaving more room for 2nd gear to pull? Obviously never done a timed run in the SS, just curious if others have noticed this. EDIT: Should have prefaced LS3, M6 transmission. __________________ 2012 - Present: 2011 CTS-V Sedan, A6, Airaid, Zmax TB and Tune by R.P.M. = 535 hp/503 lb-ft. 2009 - 2012: 2010 2SS RS IBM M6, MGW Shifter, BMR Trailing Arms/Tunnel Brace, Roto-Fab CAI, VMAX Ported TB, Kooks 6511-Complete (Headers, X-Pipe, Mufflers), dyno tuned by R.P.M. = 415 hp/412 lb-ft. "Not giving a f^k is truly the greatest luxury, and no luxury car gives fewer f^k's than a CTS-V." - Matt Hardigree Last edited by MEDISIN; 01-18-2010 at 06:30 PM.

01-19-2010, 01:43 PM	#7
toehead93 Drives: 2014 2SS/1LE Join Date: Feb 2007 Location: wpb fl Posts: 3,136 View My Garage	Yeah, something seems off. My car pulls like mad from 3,500rpms-5,500rpms in every gear. __________________ Used Racing Brake 2 Peice Rotors for sale: http://www.camaro5.com/forums/showthread.php?t=344754 Summit White 2014 2SS 1LE Recaros, NPP exhaust, Nav 2010 2SS A6 - sold.

01-19-2010, 05:56 PM	#9
Mr Smith Born again Hot Rodder Drives: Black 1SS/RS LS3 M6 Join Date: Sep 2009 Location: Cartoon City, Nevada Posts: 680 View My Garage	The "acceleration" or pulling you describe would be torque. I noticed that torque on the LS3 drops off at about 4500 -5000 rpm. Right around that RPM range the motor seems to harmonize and run smoother as well. This is true for any motor..Even though the HP keeps increasing with more PRM, the torque falls off at a certain point thus causing the car to feel as if its not accelerating as hard. __________________ Black 1SS RS MT: Powder Coated Bow Ties, Blacked out windows, Debadged, 4 Pack gauge cluster. Pure perfection.

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01-18-2010, 10:49 PM	#2
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01-19-2010, 05:46 PM	#8
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01-24-2010, 08:51 AM	#12
flyby Drives: 2010 Silver SS Join Date: Sep 2009 Location: Glen Gardner, NJ Posts: 1,336 View My Garage	I have an LS3 and I've never noticed any lag or drop off anywhere no matter the rpm until the limiter kicks in. I agree, this car should come with a driver internal reset button, or at least a permagrin wiper. This car is sick fast and quick.