Rear Alignment Specs for Drag Racing - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

mtcwby · 12-09-2010, 08:44 PM

Could anyone give me some good alignment specs for the rear of a Camaro for drag racing. I want it to still be good for everyday driving, but need to get the contact patch as good as possible for launching at the strip.
I'm running 18X9.5 +40 offset Corvette wheels and Mickey Thompson 305/45R18 Drag Radials.

Thanks!

BMR guy · 12-14-2010, 04:41 PM

We are running the same wheel/tire setup and pushing 610 to the rear wheels. It all depends how violent your car launches and how far it squats during launch. A really "squatty" launch will have a lot of negative camber and less tire contact with the track. Running some positive camber, even if it was just .25 degrees would be ideal for a track-only car but handling will suffer on the street.

We have run between 1.54-1.56 60 ft/times 4 different times on 4 separate tracks using -.5 degrees of rear camber. This is just our street setting and I'm sure we are probably seeing some excessive negative camber off the line but on a prepped track we have had zero wheelspin so there has been no need to adjust it any differently....so far

DMSDesign · 12-15-2010, 12:01 AM

You will want to reduce rear negative camber to the max. Even then you are not maxing out on what can be done with rear cambers. Pedders does make a rear camber kit that is easy to install, and you may get an additional .5 or so less negative camber. With these eccentrics, it is possible to get up to +.5 degrees camber on the rear. This is ideal for a launch if launching is your primary desire. Not real good for handling in the corners, however.

mike
dms

IPS Brandon · 12-15-2010, 08:35 AM

I agree with Mike, if drag racing is your pure objective then set your camber out to +.5 +.75 depending on how hard the car is coming off the line. The goal is to get the tires to 0 camber at launch and heading down the track this will promote the highest friction patch.

Regards

BMR guy · 12-15-2010, 11:30 AM

I think people are missing your statement that you want a setting for the track that is still fine for the street. Obviously you can run positive camber for ideal track settings (up to 1 degree depending on how hard your car squats) but positive camber is not recommended for street driving, especially if you want the car to handle.

My point in my above post is that we are running 10.90's with a 1.5 sixty foot time using our street setting of -.5 degrees. This setting works great on the street and has yet to be a problem at the track...

mtcwby · 12-15-2010, 11:35 PM

Thanks everyone for all the good feedback. I'll probably go with about a neutral or 0 camber with me sitting in the car and 1/2 tank of fuel.
Then when road tripping, with all my stuff in the trunk and a full tank of gas it will be good on the curvy mtn roads.

redjeff · 12-16-2010, 10:05 PM

Honestly for what your asking I would just try and zero everything out. Maybe a little negative camber for more comfort daily.

Bruce@raymondsperformance · 12-17-2010, 08:12 AM

We have been setting the drag\street driven cars at 0 on the rear camber and have been getting good traction aswell as good every day performance.

JusticePete · 12-20-2010, 11:25 AM

Listen to the Pedders Specialists as they are giving you excellent information.

At the strip at full squat you want your rear tires as square to the pavement as possible. Most cars set up for drag will be running wider rear tires and stockers up front. That is a prescription for understeer. Reducing the rear camber to 0 or a bit positive will reduce the push / understeer.

Think of it this way. The rear IRS is as good as any IRS on any production car being built today. The front strut with virtual pivot point functions well, but not as well as a CTS Caddy. They are in some ways a mismatch with much greater grip in the rear than the front. Add to that the front weight bias and you can see why a drag ready alignment will work quite well on the street.

PFL · 02-25-2017, 07:57 PM

Quote:

Originally Posted by BMR guy

We are running the same wheel/tire setup and pushing 610 to the rear wheels. It all depends how violent your car launches and how far it squats during launch. A really "squatty" launch will have a lot of negative camber and less tire contact with the track. Running some positive camber, even if it was just .25 degrees would be ideal for a track-only car but handling will suffer on the street.

We have run between 1.54-1.56 60 ft/times 4 different times on 4 separate tracks using -.5 degrees of rear camber. This is just our street setting and I'm sure we are probably seeing some excessive negative camber off the line but on a prepped track we have had zero wheelspin so there has been no need to adjust it any differently....so far

Which Camber should go for a 100% drag race car, drag street? I do not care about comfort. I need to get a perfect launch.

JusticePete · 02-25-2017, 08:54 PM

If you are not running skinnier, the more negative camber you run up front the better. Max inflate your front tires and combined with high negative camber the car will act like you are on fat skinnies.

PFL · 02-25-2017, 09:03 PM

Quote:

Originally Posted by JusticePete

If you are not running skinnier, the more negative camber you run up front the better. Max inflate your front tires and combined with high negative camber the car will act like you are on fat skinnies.

Thank you for your help. I'm using drag radial for rear, should I use Positive Camber for rear?

JusticePete · 02-25-2017, 09:17 PM

Zero, not positive.

se7en · 02-26-2017, 07:43 AM

Pete my brother........ for drag racing these cars need some positive in the rear.

12-09-2010, 08:44 PM	#1
mtcwby High on "The Camaro Life" Drives: 2010 2SS, IOM, LS3, Vortech, LG cam Join Date: May 2009 Location: Big Sandy, MT & Yuma, AZ Posts: 1,028 View My Garage	Rear Alignment Specs for Drag Racing Could anyone give me some good alignment specs for the rear of a Camaro for drag racing. I want it to still be good for everyday driving, but need to get the contact patch as good as possible for launching at the strip. I'm running 18X9.5 +40 offset Corvette wheels and Mickey Thompson 305/45R18 Drag Radials. Thanks! __________________ "The democracy will cease to exist when you take away from those who are willing to work and give to those who are not."-Thomas Jefferson------Going Strong at 39,250 miles

12-15-2010, 11:35 PM	#6
mtcwby High on "The Camaro Life" Drives: 2010 2SS, IOM, LS3, Vortech, LG cam Join Date: May 2009 Location: Big Sandy, MT & Yuma, AZ Posts: 1,028 View My Garage	Thanks everyone for all the good feedback. I'll probably go with about a neutral or 0 camber with me sitting in the car and 1/2 tank of fuel. Then when road tripping, with all my stuff in the trunk and a full tank of gas it will be good on the curvy mtn roads. __________________ "The democracy will cease to exist when you take away from those who are willing to work and give to those who are not."-Thomas Jefferson------Going Strong at 39,250 miles

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12-14-2010, 04:41 PM	#2
BMR guy Drives: 2010 1SS Join Date: Jan 2010 Location: Tampa, FL Posts: 1,002	We are running the same wheel/tire setup and pushing 610 to the rear wheels. It all depends how violent your car launches and how far it squats during launch. A really "squatty" launch will have a lot of negative camber and less tire contact with the track. Running some positive camber, even if it was just .25 degrees would be ideal for a track-only car but handling will suffer on the street. We have run between 1.54-1.56 60 ft/times 4 different times on 4 separate tracks using -.5 degrees of rear camber. This is just our street setting and I'm sure we are probably seeing some excessive negative camber off the line but on a prepped track we have had zero wheelspin so there has been no need to adjust it any differently....so far

12-15-2010, 12:01 AM	#3
DMSDesign Suspension Specialist Drives: 2011 Camaro Join Date: Aug 2010 Location: SF Bay Area Posts: 65	You will want to reduce rear negative camber to the max. Even then you are not maxing out on what can be done with rear cambers. Pedders does make a rear camber kit that is easy to install, and you may get an additional .5 or so less negative camber. With these eccentrics, it is possible to get up to +.5 degrees camber on the rear. This is ideal for a launch if launching is your primary desire. Not real good for handling in the corners, however. mike dms

12-15-2010, 08:35 AM	#4
IPS Brandon Drives: 2010 Camaro SS black Join Date: Aug 2009 Location: Columbus Ohio Posts: 907	I agree with Mike, if drag racing is your pure objective then set your camber out to +.5 +.75 depending on how hard the car is coming off the line. The goal is to get the tires to 0 camber at launch and heading down the track this will promote the highest friction patch. Regards

12-15-2010, 11:30 AM	#5
BMR guy Drives: 2010 1SS Join Date: Jan 2010 Location: Tampa, FL Posts: 1,002	I think people are missing your statement that you want a setting for the track that is still fine for the street. Obviously you can run positive camber for ideal track settings (up to 1 degree depending on how hard your car squats) but positive camber is not recommended for street driving, especially if you want the car to handle. My point in my above post is that we are running 10.90's with a 1.5 sixty foot time using our street setting of -.5 degrees. This setting works great on the street and has yet to be a problem at the track...

12-16-2010, 10:05 PM	#7
redjeff Drives: Too many to list!!! Join Date: Dec 2010 Location: muskegon Posts: 10	Honestly for what your asking I would just try and zero everything out. Maybe a little negative camber for more comfort daily.

12-17-2010, 08:12 AM	#8
Bruce@raymondsperformance Drives: 2014 Z28 camaro Join Date: Sep 2009 Location: Indy Posts: 705	We have been setting the drag\street driven cars at 0 on the rear camber and have been getting good traction aswell as good every day performance.

12-20-2010, 11:25 AM	#9
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	Listen to the Pedders Specialists as they are giving you excellent information. At the strip at full squat you want your rear tires as square to the pavement as possible. Most cars set up for drag will be running wider rear tires and stockers up front. That is a prescription for understeer. Reducing the rear camber to 0 or a bit positive will reduce the push / understeer. Think of it this way. The rear IRS is as good as any IRS on any production car being built today. The front strut with virtual pivot point functions well, but not as well as a CTS Caddy. They are in some ways a mismatch with much greater grip in the rear than the front. Add to that the front weight bias and you can see why a drag ready alignment will work quite well on the street.

02-25-2017, 08:54 PM	#11
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	If you are not running skinnier, the more negative camber you run up front the better. Max inflate your front tires and combined with high negative camber the car will act like you are on fat skinnies.

02-25-2017, 09:17 PM	#13
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	Zero, not positive.

02-26-2017, 07:43 AM	#14
se7en Drives: 10 Procharged SS Join Date: Oct 2009 Location: The creek at the end of the dead end road Posts: 1,857	Pete my brother........ for drag racing these cars need some positive in the rear.