01-16-2016, 12:00 AM | #1 |
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Setting up for drag racing
What is the best bang for your buck on rear suspension to help me hook up at the track and street? Currently on BMR 1.25 drop Springs toe links trailing arms and upper control arm bushings.
I know I need my car to squat but I need it to stay there and not bounce back up.
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MODS 6.0 forged iron block, TH400, B&M shifter, DSS axles & driveshaft, Viking / BMR suspension, Full custom fuel system with cell, Twin 76mm teriyaki tornados on 24lbs.
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01-16-2016, 12:14 AM | #2 |
Too much is never enough!
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01-16-2016, 12:19 AM | #3 |
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I have the BMR trailing arms and springs and it helped a lot with the wheel hop. I may not be running as much power as you though.
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01-16-2016, 12:22 AM | #4 |
Drives: 2010 camaro ss Join Date: Jun 2010
Location: Port Arthur, Tx
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From what I hear is removing the front sway bar. Drag radials and trailing arms with bushings along with toe rods. Lower psi on tires
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01-16-2016, 12:54 AM | #5 |
coilovers set to high compression, low rebound up front and set to low compression high rebound in the rear.
that set up allows the front to extend easily and delays its return, while allowing the rear to squat and delaying its rebound. not sure what else you could do for a bang/buck as you've got the rest pretty much done. cradle bushings? |
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01-16-2016, 01:07 AM | #6 | |
In The Circle
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Quote:
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Last edited by Merc; 01-16-2016 at 02:20 PM. |
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01-16-2016, 05:13 AM | #7 |
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So what should I do? I have the DSS axle and driveshaft upgrades. Running hoosier 295 40 18s.
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MODS 6.0 forged iron block, TH400, B&M shifter, DSS axles & driveshaft, Viking / BMR suspension, Full custom fuel system with cell, Twin 76mm teriyaki tornados on 24lbs.
https://www.instagram.com/whoopa_ss/ |
01-16-2016, 05:15 AM | #8 |
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So I don't want the ass to squat but I want the front to lift?
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MODS 6.0 forged iron block, TH400, B&M shifter, DSS axles & driveshaft, Viking / BMR suspension, Full custom fuel system with cell, Twin 76mm teriyaki tornados on 24lbs.
https://www.instagram.com/whoopa_ss/ |
01-16-2016, 07:09 AM | #9 |
www.1baddogracing.com
Drives: 2010 IOM 2SS/RS Auto Join Date: Apr 2011
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Correct. The angle of the IRS in the 5th gen requires the rear to limit squat, but transferring weight to the rear of the car will help with traction. The further you squat the more severe the axle angle becomes resulting in lost power.
The heavy duty cars like Farks have moved the center section further up in the cradle to allow them to squat more without losing axle angle and power. Unfortunately in the 5th Gen, the only option to do this is to remove the gas tank and put in a fuel cell. Hendrix Engineering has developed some off-set diff bushings that may help some of the axle angle issues. Here is a good article on IRS: http://www.nmcadigital.com/2015/01/0...-axle-go-fast/
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01-16-2016, 07:27 AM | #10 |
CamaroFans.com
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Get rid of the lowering springs and go back to stock with some trailing arms.
Stock suspension will get some 1.5x 60' |
01-16-2016, 09:00 AM | #11 |
Drives: 2010 2SS LS3, 2013 duramax Join Date: Nov 2012
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Rear irs drag spec alignment helps
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01-16-2016, 09:56 AM | #12 |
that article states that you do want squat for an IRS. even the Camaro example desired squat.
A little positive camber fixes the alignment issue so the wheels have max contact during the squat, but the axle issue is still there. I guess it's a compromise of traction and power delivery. Seems like those offset bushings would be great for allowing more squat. The article also stated weight on the rear is good, even ballast. Maybe try a couple sandbags in the trunk to see if your times drop? And the biggest rear sway bar you kind find! |
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01-16-2016, 11:37 AM | #13 |
Eh, that'll happen
Drives: 2010 2SS Join Date: Apr 2012
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Get rid of lowering springs and buy the Hendrix offset differential bushings. Lowering springs put even more angle on the axles than stock in which you dont want. The offset bushings straighten things out and help a lot.
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01-16-2016, 01:18 PM | #14 | |
In The Circle
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Quote:
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