FS: GM's T1 race suspension kit: Shocks and sway bars/bushings!
03-12-2017, 05:06 AM
#1
Sr.Random input generator
Thread Starter
GM's T1 race suspension kit: Shocks and sway bars/bushings!
SOLD
These parts are not individually available (only sold as kit).
- Stabilizer bars (40% stiffer front And 20% stiffer rear; allows wider front tires) with T1-specific bushings.
- Track-Optimized Passive Shocks (cheap!; front 22873513, rear 22873509).
Only used for about 1500 miles. I am switching to a full LG suspension, so these will have to go. Asking only $850 shipped (The best price for the whole kit, which also includes LCAs is about $2900 shipped).
These shocks come with the T1 kit.
Front sway bar is T1-specific. Rear sway bar is same as Z06 rear sway, but with T1-specific bushings. (Springs are not included, but on sale separately).
These parts are not individually available (only sold as kit).
- Stabilizer bars (40% stiffer front And 20% stiffer rear; allows wider front tires) with T1-specific bushings.
- Track-Optimized Passive Shocks (cheap!; front 22873513, rear 22873509).
Only used for about 1500 miles. I am switching to a full LG suspension, so these will have to go. Asking only $850 shipped (The best price for the whole kit, which also includes LCAs is about $2900 shipped).
These shocks come with the T1 kit.
Front sway bar is T1-specific. Rear sway bar is same as Z06 rear sway, but with T1-specific bushings. (Springs are not included, but on sale separately).
Last edited by X25; 10-13-2017 at 04:04 PM.
04-09-2017, 01:10 AM
#2
Le Mans Master
I'll hop in line and ask what "track optimized" means.
And I assume LCA aren't included?
And I assume LCA aren't included?
Last edited by village idiot; 04-09-2017 at 01:11 AM.
04-09-2017, 01:15 AM
#3
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Thread Starter
I got the description from somewhere else, but basically the shock valving is a bit more biased on performance than comfort, as compared against the Z51.
Here's Tadge's answer:
https://www.corvetteforum.com/forums...post1593630264
Here's Tadge's answer:
https://www.corvetteforum.com/forums...post1593630264
Tadge answered:
The short answer to the specific question asked is, “The standard Grand Sport and the Stingray fitted with T1 hardware would be expected to have very similar capability on the track”.
But you were probably hoping for more than that.
Since the packages were developed independently of each other and at different times by different engineers we don’t have a lot of direct comparison data. Ideally we would run both cars on the same track on the same day with the same driver. The data we have is from our on-site Milford road course – a track few customers will ever drive. The T1 package was developed around the SCCA spec tire, the Hoosier A6. Since the tire was the starting point for chassis development, we had to optimize the rest of the components around the performance of that tire. The best solution included a very large stabilizer bar on the front and in the rear we used the same bar we would eventually spec on the Grand Sport. This bar combo gave us the roll gradient we wanted and very balanced handling at the limit. We wanted to make sure the cars had performance accessible to many drivers.
There is a question in the thread wondering why higher spring rates were not specified. We looked at that, but found no significant performance benefit, and in fact, are within 10 % of the C6 T1 spec (front slightly softer, rear slightly stiffer). Shock tuning migrated towards calibrations we loved on the track in development work for the Stingray Z51, but were not put in productions because the street ride was considered too harsh for most customers.
OK, how about some numbers…. Well, here is the best we have. On our track a Stingray Z51 has run a 1:56.3. With the T1 package we have a time of 1:53.9, an almost 2.5 second improvement. To be honest, we didn’t put huge energy into setting the fastest possible time on a track that is not comparable to others, so there could be a few more tenths in it. Ditto the standard Grand Sport – the times are right in that range, but we spent most of our track time with the Z07 package. Our best time with that set up is 1:52.6.
The short answer to the specific question asked is, “The standard Grand Sport and the Stingray fitted with T1 hardware would be expected to have very similar capability on the track”.
But you were probably hoping for more than that.
Since the packages were developed independently of each other and at different times by different engineers we don’t have a lot of direct comparison data. Ideally we would run both cars on the same track on the same day with the same driver. The data we have is from our on-site Milford road course – a track few customers will ever drive. The T1 package was developed around the SCCA spec tire, the Hoosier A6. Since the tire was the starting point for chassis development, we had to optimize the rest of the components around the performance of that tire. The best solution included a very large stabilizer bar on the front and in the rear we used the same bar we would eventually spec on the Grand Sport. This bar combo gave us the roll gradient we wanted and very balanced handling at the limit. We wanted to make sure the cars had performance accessible to many drivers.
There is a question in the thread wondering why higher spring rates were not specified. We looked at that, but found no significant performance benefit, and in fact, are within 10 % of the C6 T1 spec (front slightly softer, rear slightly stiffer). Shock tuning migrated towards calibrations we loved on the track in development work for the Stingray Z51, but were not put in productions because the street ride was considered too harsh for most customers.
OK, how about some numbers…. Well, here is the best we have. On our track a Stingray Z51 has run a 1:56.3. With the T1 package we have a time of 1:53.9, an almost 2.5 second improvement. To be honest, we didn’t put huge energy into setting the fastest possible time on a track that is not comparable to others, so there could be a few more tenths in it. Ditto the standard Grand Sport – the times are right in that range, but we spent most of our track time with the Z07 package. Our best time with that set up is 1:52.6.
04-09-2017, 01:20 AM
#4
Le Mans Master
I got the description from somewhere else, but basically the shock valving is a bit more biased on performance than comfort, as compared against the Z51.
Here's Tadge's answer:
https://www.corvetteforum.com/forums...post1593630264
Here's Tadge's answer:
https://www.corvetteforum.com/forums...post1593630264
And LCA aren't included? What's the difference from those to the base LCA?
Last edited by village idiot; 04-09-2017 at 01:23 AM.
04-09-2017, 01:34 AM
#5
Sr.Random input generator
Thread Starter
The LCAs have stiffer bushings. Since then, GM made the LCAs also individually purchasable, so you could source them for cheap.
Last edited by X25; 04-09-2017 at 01:35 AM.
04-25-2017, 02:01 AM
#6
Sr.Random input generator
Thread Starter
Ttt
05-29-2017, 02:50 PM
#7
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Thread Starter
Ttt
05-29-2017, 05:51 PM
#8
Team Owner
Member Since: Jan 2007
Location: cookeville tennessee
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ttt
Free bump buddy but you are going to love the LG coilover set up on the car. 
05-29-2017, 05:54 PM
#9
Sr.Random input generator
Thread Starter
05-30-2017, 02:48 AM
#10
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Thread Starter
Lowered the price. If you're in the market for these parts, save big!
05-30-2017, 11:34 PM
#12
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Thread Starter
Hi Brendt, yes, it works on any Stingray.
08-23-2017, 06:44 AM
#13
Sr.Random input generator
Thread Starter
Ttt. Price updated.
Last edited by X25; 08-23-2017 at 06:46 AM.
The following users liked this post:
X25 (08-31-2017)
08-31-2017, 07:07 AM
#15
Sr.Random input generator
Thread Starter
Ttt
08-31-2017, 07:13 PM
#16
Naples FL
(LOWERED PRICE)
These parts are not individually available (only sold as kit).
- Stabilizer bars (40% stiffer front And 20% stiffer rear; allows wider front tires) with T1-specific bushings.
- Track-Optimized Passive Shocks (cheap!; front 22873513, rear 22873509)
Only used for about 1500 miles. I am switching to a full LG suspension, so these will have to go. Asking only $850 shipped (The best price for the whole kit, which also includes LCAs is about $2900 shipped).
These shocks come with the T1 kit.
Front sway bar is T1-specific. Rear sway bar is same as Z06 rear sway, but with T1-specific bushings. (Springs are not included, but on sale separately).
These parts are not individually available (only sold as kit).
- Stabilizer bars (40% stiffer front And 20% stiffer rear; allows wider front tires) with T1-specific bushings.
- Track-Optimized Passive Shocks (cheap!; front 22873513, rear 22873509)
Only used for about 1500 miles. I am switching to a full LG suspension, so these will have to go. Asking only $850 shipped (The best price for the whole kit, which also includes LCAs is about $2900 shipped).
These shocks come with the T1 kit.
Front sway bar is T1-specific. Rear sway bar is same as Z06 rear sway, but with T1-specific bushings. (Springs are not included, but on sale separately).
08-31-2017, 07:15 PM
#17
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Thread Starter
09-01-2017, 06:40 AM
#18
Naples FL
I drive my car daily and don't want the trade off to our way the benefit.
09-01-2017, 01:52 PM
#19
Sr.Random input generator
Thread Starter
That said, if your focus is commuting with your car, this might not be the right product for you. This suspension kit is meant to support much higher traction slicks/R-compounds if you put them on, besides stock tires.
10-12-2017, 07:06 AM
#20
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Thread Starter
Ttt