Off the trailer and onto the scales, this is the base weight. 41.9 percent is just the rear weight percentage. |
Something that was never done in ESP trim since I owned the car, setting the corner weights! Took it to Team Zip Tie's Worldwide Racing Headquarters today and after a few hours of thrashing, the Camaro is fully built for C Prepared. Or something.
The last time I remember weighing the car was 10 years ago or so when it was rolled onto the scales at FBC Performance.
The car weighed 3,168 in 2014 in ESP trim (albeit OEM 16X8 fourthgen F-Body wheels instead of 17X11 CCWs). |
Not that it has fourth-gen stockers instead of the 17X11 CCWs, which I'm guessing the latter is heavier. But it's pretty close to a baseline of the old ESP setup.
Of course a lot of weight has been shed over the past year. All-aluminum 5.3 replaced the cast iron (block and heads) 350, which according to the internet is 100-pounds difference. Off the nose of the car. The interior is also mostly gone -- just a Corbeau driver's seat with most of the dash and all the glass is all that remains - no heater core or center console, lightweight battery ... probably some odds and ends I'm forgetting about.
I was guessing it would be in the low 3,000 range, but I was pleasantly surprised to see it roll onto the scales at 2,932. So it lost roughly 260 pounds going by the picture above from 2014. (Brainstorming differences other than the wheels, it had a heavy OEM replacement battery then ... now it's 17-ish pound Odyssey PC680.)
That's underweight for C-Prepared which is actually good because weight can be added in all the right places. Which is what we did from the start today -- added 70 pounds to the right-rear corner.
The cross-weight is what we were targeting. It started off in the 53-percent range, but ideally it should be 50 percent. The one time I actually corner-weighted a car was one of my old Sentras, and it initially rolled onto the scales at 47-percent but ended up high 49-percent after tweaking the ride height. It wasn't an earth-shattering difference in handling, but it definitely felt more balanced. Like if you could do something simple to pick up 10 horsepower, why wouldn't you do this?
After much thrashing, we got the car to a high 49-percent cross-weight.
Top weight is with ballast without me in the car. Bottom weight is with me in the car. The graphic is the design of the wing that may someday appear on the car for downfarce. |
Got even better adding a couple gallons of gas. This car is right at the edge of legality for weight, I need to top off the tank before each autocross. Not like it will ever turn tires at a national SCCA event anyway, but I want to play on equal ground.
Next up is a VMSC autocross at Virginia Motorsports Park next Sunday, Sunday, Sunday. Feeling a bit more confident in the car, but I need to grip it in rip it like pulling off a scabbed-up bandaid on the first run.
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