The engineers I talked to at PRI30 last year suggested the GM Performance Lowering Kit along with the GM Sways which are the FE4 bars. They said this setup would provide me with the ZL1/1LE setup. I’m loving the ride, handing and it’s so much better. They said these parts are tuned for the cars geometry.


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Let's get this one answered! GM has vested interest in providing this info as it will drum up interest in their suspension kits and we'll be able to make an informed decision!

What does the timing look like on the next poll?

Thanks for the reminder. We'll get going on it.

Might be worth knowing whether these kits were designed around Supercar 3's, 3R's, or something else.


Norm

I agree. I've added this to the list of questions in the original post.

We need to get this one down to a single question or at least one that doesn't have so many different directions.

Something Like:

I'm interested in upgrading the 1SS base suspension to be closer to the 1SS 1LE. Can we get some comparison data (lap times) and your thoughts to help make this decision.

Kits:
1. SS lowering kit
2. SS 1LE suspension kit (with MRC cal update)
3. ZL1 1LE suspension kit (both 84352121 and 84352119)

Existing literature states:
- SS lowering/handling kit (springs/shocks-84188726) + handling kit (swaybars/front links-84242386) provides a 1.6s lap time reduction on Milford Proving Grounds Autocross course.
- ZL1 1LE combo noted above provides a 1.8s lap time reduction at Milford Proving Ground NE course on an SS.

mlee,
Thanks for including the suspension kit question in this poll! I agree the original post probably had too many subquestions, but I'd ultimately like to understand this:

1. With a goal of getting as close to an SS 1LE as possible (on a non-MRC SS car), what suspension kit and wheel/tire combination is recommended?
2. Would the SS 1LE wheel/tire combination have any interference with any of the suspension options noted above?
3. Which wheel/tire combination was each kit optimized around?

To parse it down to the bare minimum, what do you think about this wording for the question (see proposed change in bold below)? If you agree with this working, I can update the original post.

"Al,
I'm interested in upgrading the 1SS base suspension to be closer to the 1SS 1LE. Can we get some comparison data (lap times) and your thoughts to help make this decision, including recommendations for wheel/tire combination upgrades to work with each kit.

Kits:
1. SS lowering kit
2. SS 1LE suspension kit (with MRC cal update)
3. ZL1 1LE suspension kit (both 84352121 and 84352119)

Existing literature states:
- SS lowering/handling kit (springs/shocks-84188726) + handling kit (swaybars/front links-84242386) provides a 1.6s lap time reduction on Milford Proving Grounds Autocross course.
- ZL1 1LE combo noted above provides a 1.8s lap time reduction at Milford Proving Ground NE course on an SS."

This post provides a lot of good information comparing options 2 (FE4/MRC) and 3 (FEA/DSSV) from the original post: https://www.camaro6.com/forums/showt...=528652&page=6

[Answer] https://www.camaro5.com/forums/showthread.php?t=512278