ZOHSIC

First time down the lane with it, BONE stock on Stock goodyear tires.

First time lining up......total rape of the street tires abort the pass.
second pass, I bought another IRS car, so gotta learn to peddle it: 12.14 @ 120 with 1.99 60'
third pass, trying again, but got worse and slower 12.26 @ 119 with 2.03 60'
Fourth pass, felt better, 12.ohhhhhh @ 121 with 2.04 60'
Fifth and last pass of the day, change shift points (on LET8HANG's advice) 11.96 @ 119.6 with 1.90 60'




video:

dankhts

RedZ4me

stock rubber vs. stickys..........well done !! what was the smoke at the end?

camirocz

Your mph seems low.Make sure you get into 4th gear at the 1000 ft mark.You should be going 11.7 at 123 to 125 mph.Launching on the good years is no easy task.Shifting into 4th is critical to achieve maximum mile per hour.

ZOHSIC

Just prior to our race, another car ahead of us put a rod through the pan past the finish line, so they had spent 15 minutes with oil dry all over the end zone. I was the first car down after that mess (******** my pants actually) so I kicked up all the dust as i was slowing down.

ZOHSIC

I shifted into fourth to get into the 11's. First two passes I crossed the line in 3rd buzzing 7 grand. I'm not sure what rpm to shift at for best results. I would think anywhere over 5500?

Also, does anyone do gear swaps on these to mathematically get them down into the 10's?

My personal goal after some mods I plan to do is 10.99 then I'm calling it a day. I heard that 520rwhp should be enough for 10's but on the stock 3.42 rear gears?

sami85L98

Good for you man, i had to applaud for making it to track, hardly any vettes come out to track, many times i find myself alone vette guy......i will be back at the track next year. Right now its my DD and not enough funds if i broke anything.....so hopefully next year.

LS7 BUD

There are no other gear ratios for the C6Z diff... You could put a 26" tall drag radial or biasply on a 17x11 rim and that would give you the gearing you want... Plus better traction...

ZOHSIC

I was planning to run a 345/30/19 NT05R full time.

Last I saw for you was 10.68 on motor, when you heading to the track next?

camirocz

Now i know why your mph is so low .Every gear has to see 7000 rpm.Shift right before the limiter kicks in.

LS7 BUD

Yeah 10.66 on a 90* day with 90% humidity at 3300DA... I'm going to the track this weekend... I'll be at TMP because Sparta has a OSCA event this weekend... Hopefully they won't kick me out right away... Most of the time they let my friends and I run in the 10's without cages but that depends on how many people are there...

My friends at RPM Transmissions sell a built base C6 IRS with 4.10's if you want... That would help you a lot plus ditching that stock clutch for a McLeod RXT would really help too... Being able to slip the clutch off the line will really help... The stock clutch gets too hot too fast... It sucks for any hot lapping...