SRA would give the Camaro a half second in the quarter? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

kdbolt70 · 04-03-2009, 07:15 AM

I have a friend who's a car guy, though admittedly more into old cars. We talk about my new Camaro occasionally, and the other day he said something like this "Its too bad the Camaro doesn't have a solid rear axle". I pointed out its somewhat archaic technology, and IRS gives you better handling performance, he says "well yeah, if you want a smoother ride IRS is better, but a solid rear axle would probably gain it like 1/2 a second in the 1/4 mile." I felt like this was a bit bogus, as there's not a half second's worth of traction issues in the IRS Camaro. Can anyone shed some light on this? Give me their opinions?

Chevyrocker · 04-03-2009, 09:54 AM

SRA is good for straight lines, no doubt. Unless you plan on living at the track, you should be ecstatic the used IRS.

383ss · 04-03-2009, 03:17 PM

with 20's? no freak'n way. doubt it would make any difference

with 15' wheels and a 28X10.5 slick? ya, it would probably help out a quite a bit.

OverAnxious · 04-03-2009, 03:20 PM

I have more faith in the R&D at GM and the bean counters than I do random SA/IRS opinions

Grant it, SRA would be a touch better in the 1/4 mile, but look at the bulk of the Camaro buyers, V6 cars for one and only a VERY small percentage of all camaros sold will see a drag strip

It comes down to the $$ and majority sales.

*GTAHVIT* · 04-03-2009, 03:28 PM

a tenth... maybe... no more than that on a stock car.

*radz28* · 04-03-2009, 05:27 PM

A half second?... Hmm. We'll get an idea on how efficient the powertrain is when we start getting more dyno' numbers, but from the one that I know of, it seems the powertrain is either pretty efficient, or the LS3 is underrated. That being said (opinion only) if those numbers are accurate, I don't see too much a benefit of adding SRA other than strength and weight.

JJ#48Racing · 04-06-2009, 10:52 AM

Most of that gain would be in the 60ft time, but probably not a 1/2 second. I like drag racing but I'm glad GM went with IRS. Much better package overall.

prostreet67 · 04-06-2009, 11:08 PM

overall tire hight is the same for 18'' 19'' and 20''

383ss · 04-06-2009, 11:34 PM

Quote:

Originally Posted by prostreet67

overall tire hight is the same for 18'' 19'' and 20''

and???

Crowley · 04-07-2009, 08:51 AM

No way .. not a half second .. lol ... maybe a tenth or so as I believe you will have a little less drivetrain loss without the IRS and it is a bit easier to launch ..

Crowley

Mr Twisty · 04-08-2009, 10:49 AM

Eventually you'll read about guys putting sra under the car, but only after they take the rest of the drivetrain torque so hi it breaks. These guys won't be looking for twisty roads to play on.

For daily driving and occasional 1320 runs, IRS should be just fine up to it's gobs of horsepower breaking point.

oldtransam · 04-11-2009, 10:10 PM

There's definitely a straight line advantage for a solid axle. This comes from three things:

1) Rear tires are square to the ground (an IRS cambers the tires when the tail squats)
2) Less parasitic losses (IRS has more joints)
3) Less system weight

A half a second sounds overly optimistic for cars in this power range, though. I'd put it more in the range of .15 seconds.

lsx only · 04-20-2009, 11:41 AM

2 tenths maybe 3 at the most

Rock36 · 05-06-2009, 01:20 PM

No way would switching to a SRA save an entire half second. Shaving half a second takes some effort in the drag racing world especially when you are in the low 13s/high 12s to begin with.

The SRA should eliminate some wheelhop, but nothing spectacular.

I'm with the others. I would expect maybe 0.2 tenths of an improvement with a SRA.

04-03-2009, 07:15 AM	#1
kdbolt70 Drives: 2010 Camaro 2SS/RS Join Date: Oct 2008 Location: Haslett, Mi Posts: 1,287 View My Garage	SRA would give the Camaro a half second in the quarter? I have a friend who's a car guy, though admittedly more into old cars. We talk about my new Camaro occasionally, and the other day he said something like this "Its too bad the Camaro doesn't have a solid rear axle". I pointed out its somewhat archaic technology, and IRS gives you better handling performance, he says "well yeah, if you want a smoother ride IRS is better, but a solid rear axle would probably gain it like 1/2 a second in the 1/4 mile." I felt like this was a bit bogus, as there's not a half second's worth of traction issues in the IRS Camaro. Can anyone shed some light on this? Give me their opinions? __________________ 2SS/RS Victory Red M6 w/ Black Rallys #3305 Muffler Delete, Lloyd "SS" Floormats, K&N Aircharger, Skip Shift Eliminator, Blacked Bowties

04-03-2009, 09:54 AM	#2
Chevyrocker Weekend Rockstar Drives: Depends on the day... Join Date: Mar 2008 Location: West Palm Beach Posts: 1,444	SRA is good for straight lines, no doubt. Unless you plan on living at the track, you should be ecstatic the used IRS. __________________ *Shortcuts can slow you down...*

04-03-2009, 03:28 PM	#5
GTAHVIT Blessed Drives: 2013 Sonic RS MT Join Date: Dec 2007 Location: Saint Augustine FL Posts: 28,444 View My Garage	a tenth... maybe... no more than that on a stock car. __________________ Click image to see build thread. PQ - "the love of cars. It's a boys first step toward manhood and a mans last hold on boyhood." Fbodfather - "We do not want to use the Z28 moniker on a car that does not deserve this hallowed name." The_Blur - "Let's not confuse competitors with equals."

04-03-2009, 05:27 PM	#6
radz28 Petro-sexual Drives: Ultra-Grin Join Date: Oct 2006 Location: Crazy Coast Posts: 15,201 View My Garage	A half second?... Hmm. We'll get an idea on how efficient the powertrain is when we start getting more dyno' numbers, but from the one that I know of, it seems the powertrain is either pretty efficient, or the LS3 is underrated. That being said (opinion only) if those numbers are accurate, I don't see too much a benefit of adding SRA other than strength and weight. __________________ '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs

04-06-2009, 11:08 PM	#8
prostreet67 Drives: 67 prostreet Join Date: Apr 2009 Location: Lebanon Tn. Posts: 285	overall tire hight is the same for 18'' 19'' and 20'' __________________ 2LT/RS-RJT, auto, sunroof, polished wheels, spare. order placed 3/13 3000 5/27 brought home 7/30

04-03-2009, 03:20 PM	#4
OverAnxious Drives: 1967 RS/SS L78 Coupe Join Date: May 2006 Location: Detroit, MI Posts: 799	I have more faith in the R&D at GM and the bean counters than I do random SA/IRS opinions Grant it, SRA would be a touch better in the 1/4 mile, but look at the bulk of the Camaro buyers, V6 cars for one and only a VERY small percentage of all camaros sold will see a drag strip It comes down to the $$ and majority sales. __________________ Joe Over Anxious - 1967 Camaro RS/SS L78 5th Gen Camaro BLOG // My eBay auctions

04-06-2009, 10:52 AM	#7
JJ#48Racing Drives: 1998 Camaro SS Join Date: Oct 2008 Location: Lancaster, CA Posts: 1,115	Most of that gain would be in the 60ft time, but probably not a 1/2 second. I like drag racing but I'm glad GM went with IRS. Much better package overall.

04-07-2009, 08:51 AM	#10
Crowley Okie doke Drives: 2012 GT500 Join Date: Sep 2008 Location: McKinney Texas Posts: 3,568 View My Garage	No way .. not a half second .. lol ... maybe a tenth or so as I believe you will have a little less drivetrain loss without the IRS and it is a bit easier to launch .. Crowley __________________

04-08-2009, 10:49 AM	#11
Mr Twisty Drives: the 2nd amendment home Join Date: May 2008 Location: OK Posts: 14,707	Eventually you'll read about guys putting sra under the car, but only after they take the rest of the drivetrain torque so hi it breaks. These guys won't be looking for twisty roads to play on. For daily driving and occasional 1320 runs, IRS should be just fine up to it's gobs of horsepower breaking point. __________________ "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -- Benjamin Franklin

04-11-2009, 10:10 PM	#12
oldtransam Drives: Some old Firechickens Join Date: Jan 2009 Location: Out in the Garage Posts: 43	There's definitely a straight line advantage for a solid axle. This comes from three things: 1) Rear tires are square to the ground (an IRS cambers the tires when the tail squats) 2) Less parasitic losses (IRS has more joints) 3) Less system weight A half a second sounds overly optimistic for cars in this power range, though. I'd put it more in the range of .15 seconds.

04-20-2009, 11:41 AM	#13
lsx only Drives: 2001 Z28 Join Date: Apr 2009 Location: bama Posts: 12	2 tenths maybe 3 at the most

05-06-2009, 01:20 PM	#14
Rock36 I just like V8s Drives: 2007 Corvette Z06 Join Date: Mar 2007 Location: Stuttgart, Germany Posts: 919	No way would switching to a SRA save an entire half second. Shaving half a second takes some effort in the drag racing world especially when you are in the low 13s/high 12s to begin with. The SRA should eliminate some wheelhop, but nothing spectacular. I'm with the others. I would expect maybe 0.2 tenths of an improvement with a SRA. __________________ "Anyone know who sells the driver mods?" 2007 Corvette Z06: Le Mans blue, 2LZ

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