Zl1 rear sway bar size?

Davescamaro · 04-23-2023, 07:27 PM

Hey all,
My 1LT came with a FE3 sport suspension setup and was wondering if the ZL1 would be bigger in MM? I see that it has adjustment holes for the endlinks. I've tried Google and nothing in description came out for size. I got it from ZZPerformance for $100 and took a shot in the the dark.

Any knowledge?

DriftNDraft · 04-23-2023, 09:24 PM

The GM SC1 sway bar kit is made up of the FE4 sway bars from the SS 1LE and ZL1. It's a matched upgrade for the standard SS with FE3 suspension and summer-only asymmetric size tires.

According to Wildhammer the rear sway bar in the kit has a diameter of 1.181 inches = 29.99 mm. The rear sway bar has one set of holes for the end links. As an aside, the ZL1 1LE sway bar has three sets of holes for adjusting rate.

Diameter isn't the only specification that will determine spring rate, however. Rate is also a function of how hollow the bar is (the wall thickness of the bar). It's a good idea to also make sure that the ratio of stiffness between the front and rear away bars matches the front and rear spring rates and tire grip for the kind of suspension tune you're trying to achieve.

WhiteMale · 04-24-2023, 09:13 AM

The bar on my ZL1 measured 1.08"/27.2mm. I upgraded to a BMR nonadjustable bar.

Msquared · 04-24-2023, 08:34 PM

Doesn't the regular ZL1 use the same FE4 swaybars as the SS 1LE? And it's nonadjustable? I think it's only the ZL1 1LE that uses the FEA rear bar with adjustable endlink holes.

VR Baron · 04-25-2023, 12:40 AM

Quote:

Originally Posted by Msquared

Doesn't the regular ZL1 use the same FE4 swaybars as the SS 1LE? And it's nonadjustable? I think it's only the ZL1 1LE that uses the FEA rear bar with adjustable endlink holes.

Yep

04-23-2023, 07:27 PM	#1
Davescamaro Drives: Chevy camaro Join Date: Jul 2019 Location: North Carolina Posts: 198	Zl1 rear sway bar size? Hey all, My 1LT came with a FE3 sport suspension setup and was wondering if the ZL1 would be bigger in MM? I see that it has adjustment holes for the endlinks. I've tried Google and nothing in description came out for size. I got it from ZZPerformance for $100 and took a shot in the the dark. Any knowledge? __________________ 2019 Camaro 1 LT 2.0 Riverside Blue Metallic, ZZP strut bar, K&N intake, ZZP catted DP, MRT axle back, Injen IC piping, Trifecta Elite tune, zzp heat shield, turbosmart diverter valve. Knockoff zl1 sideskirts, gm front chin spoiler, 1le blade spoiler, diode sides, 20" staggered Asanti black labels, azenis 510 245/40/20 fronts, nitto 555 g2s 275/35/20 rears.

04-23-2023, 09:24 PM	#2
DriftNDraft Drives: 2020 1SS 1LE M6 was 2018 V6 RS A8 Join Date: May 2018 Location: Minnesota Posts: 59	The GM SC1 sway bar kit is made up of the FE4 sway bars from the SS 1LE and ZL1. It's a matched upgrade for the standard SS with FE3 suspension and summer-only asymmetric size tires. According to Wildhammer the rear sway bar in the kit has a diameter of 1.181 inches = 29.99 mm. The rear sway bar has one set of holes for the end links. As an aside, the ZL1 1LE sway bar has three sets of holes for adjusting rate. Diameter isn't the only specification that will determine spring rate, however. Rate is also a function of how hollow the bar is (the wall thickness of the bar). It's a good idea to also make sure that the ratio of stiffness between the front and rear away bars matches the front and rear spring rates and tire grip for the kind of suspension tune you're trying to achieve. Last edited by DriftNDraft; 04-23-2023 at 10:01 PM.

04-24-2023, 08:34 PM	#4
Msquared Drives: Chevrolet SS 1LE Join Date: Oct 2019 Location: St. Charles, MO Posts: 1,451	Doesn't the regular ZL1 use the same FE4 swaybars as the SS 1LE? And it's nonadjustable? I think it's only the ZL1 1LE that uses the FEA rear bar with adjustable endlink holes. __________________ Matt Miller 2020 SS 1LE

04-24-2023, 09:13 AM	#3
WhiteMale Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020 Location: MO Posts: 2,017	The bar on my ZL1 measured 1.08"/27.2mm. I upgraded to a BMR nonadjustable bar.

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