Lowering the '17 ZL1

zl1_tommy · 12-28-2016, 07:49 AM

Wanted to bring this back up again. I know Phastek has lowered the one ZL1 here in Houston, but has anyone else explored this yet?

I have never just added lowering springs to a car, I've usually added additional components. My concern is that just dropping the car an inch will mess with the MRC, or simply just make the car less fun to drive.

Diggitydog · 12-28-2016, 08:01 AM

ZL1_Tommy, Just curious if your ride height has settled out on your car since taking delivery?

It would be interesting to know what the effects on MRC will be. I won't be messing with mine but still interested.

LuZim · 12-28-2016, 08:03 AM

from what i've heard it won't mess with ur MRC, but it will make the ride a bit rougher regardless..

hawk02 · 12-28-2016, 08:32 AM

I lowered my 5th gen ZL1 and it did indeed harshen the ride. I won't be lowering my new ZL1.

GoneBoy · 12-28-2016, 08:50 AM

I'm waiting for some solid answers to this as well. My front appears to have lowered slightly since purchase, but it's still in need of at least a 1 inch drop

Evolvedx27 · 12-28-2016, 10:55 PM

ride quality depends on spring design and quality.

2011Black2SS · 12-29-2016, 08:55 PM

Had Pfadt springs on my 13 ZL1 and the ride wasn't that bad. I will be lowering my 17 ZL1 when I get it in.

bluHawk141 · 12-29-2016, 09:11 PM

I would think drop spindles would be the best way to go about this, no?

KaBoom1701 · 12-30-2016, 12:18 AM

Quote:

Originally Posted by bluHawk141

I would think drop spindles would be the best way to go about this, no?

$250 worth of drop springs or $4000 for drop spindles.....

Z_Rocks · 12-30-2016, 01:03 AM

Quote:

Originally Posted by zl1_tommy

Wanted to bring this back up again. I know Phastek has lowered the one ZL1 here in Houston, but has anyone else explored this yet?

I have never just added lowering springs to a car, I've usually added additional components. My concern is that just dropping the car an inch will mess with the MRC, or simply just make the car less fun to drive.

I remember when GM had introduced the MRC into it's line and there was an interview with one of GM's suspension engineer regarding after market changes to the suspension, i.e. lowering the car or even changing the wheel's size, and he said (not in exact words), that MRC is a complex machinery that is designed and calibrated with factory designed and developed parts. Changes to the suspension can throw off the MRC calibration and it's intended behavior.

Another words, leave it alone!

seddon · 12-30-2016, 08:32 AM

Im hoping that ss coilovers work on the zl1, i dont care for the mrc.

Nor Cal ZL1 · 12-30-2016, 09:13 AM

Quote:

Originally Posted by bluHawk141

I would think drop spindles would be the best way to go about this, no?

Drop spindles is always the way to do it and retain geometery, roll center and camber curves. Sadly not enough people take this route, so most times they are either really expensive, or just not produced. It is without any doubt the correct way to do it. The 5th gen had a product in the works but it was abandoned due to costs and load certification requirements.

BreedsAS · 12-30-2016, 10:36 AM

Quote:

Originally Posted by KaBoom1701

$250 worth of drop springs or $4000 for drop spindles.....

The most a set of four drop spindles can be reasonably priced is $600-$700.

2SSRS@Gen5diy · 12-30-2016, 11:22 AM

We had some parts that lower the front of the car by 3/4 and let you change camber at the same time this week, there only prototypes so far, more testing going to them this weekend, know you will like them, i have 2 sets on order when there out.

12-28-2016, 07:49 AM	#1
zl1_tommy Drives: 2017 ZL1 Join Date: Nov 2016 Location: Houston, TX Posts: 298	Lowering the '17 ZL1 Wanted to bring this back up again. I know Phastek has lowered the one ZL1 here in Houston, but has anyone else explored this yet? I have never just added lowering springs to a car, I've usually added additional components. My concern is that just dropping the car an inch will mess with the MRC, or simply just make the car less fun to drive. __________________ 2017 Camaro ZL1 Instagram: @ZL1_Tommy Youtube: ZL1 Tommy

12-28-2016, 08:32 AM	#4
hawk02 Coupe Newbie Drives: 2017 ZL1, 2021 Corvette Convertible Join Date: Jul 2011 Location: Columbus, Ohio Posts: 3,279 View My Garage	I lowered my 5th gen ZL1 and it did indeed harshen the ride. I won't be lowering my new ZL1. __________________

12-29-2016, 08:55 PM	#7
2011Black2SS Drives: 2017 ZL1 M6 Join Date: Jul 2010 Location: Louisville, Ky Posts: 211	Had Pfadt springs on my 13 ZL1 and the ride wasn't that bad. I will be lowering my 17 ZL1 when I get it in. __________________ 2017 Nightfall Gray Metallic ZL1 M6 2014 Black GMC Serria Z71 1996 Red Z28

12-30-2016, 08:32 AM	#11
seddon Drives: 2017 ZL1 Join Date: Dec 2009 Location: NYC Posts: 1,165	Im hoping that ss coilovers work on the zl1, i dont care for the mrc. __________________ Elite Design Concepts NY5THGEN2017 ZL1 Garnet Red/M6/// IG @Crazl1

12-28-2016, 08:01 AM	#2
Diggitydog Drives: 2017 ZL1 Nightfall Convertible M6 Join Date: Nov 2016 Location: Saskatchewan Posts: 276	ZL1_Tommy, Just curious if your ride height has settled out on your car since taking delivery? It would be interesting to know what the effects on MRC will be. I won't be messing with mine but still interested.

12-28-2016, 08:03 AM	#3
LuZim Drives: Black '16 2SS - @Luca2SS Join Date: Sep 2016 Location: Florida Posts: 21	from what i've heard it won't mess with ur MRC, but it will make the ride a bit rougher regardless..

12-28-2016, 08:50 AM	#5
GoneBoy Drives: '17 ZL1 Join Date: Dec 2015 Location: Atlanta Posts: 410	I'm waiting for some solid answers to this as well. My front appears to have lowered slightly since purchase, but it's still in need of at least a 1 inch drop

12-28-2016, 10:55 PM	#6
Evolvedx27 Drives: 2017 ZL1 Join Date: Aug 2016 Location: Long Island, New York Posts: 1,036	ride quality depends on spring design and quality.

12-29-2016, 09:11 PM	#8
bluHawk141 Drives: 2015 Sierra Join Date: Apr 2016 Location: Manhattan, IL Posts: 78	I would think drop spindles would be the best way to go about this, no?

12-30-2016, 11:22 AM	#14
2SSRS@Gen5diy Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008 Location: By the lake in AZ Posts: 15,719 View My Garage	We had some parts that lower the front of the car by 3/4 and let you change camber at the same time this week, there only prototypes so far, more testing going to them this weekend, know you will like them, i have 2 sets on order when there out.

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