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Discussion Starter #1
So a customer came in to my job today with a time slip from the track last Friday, he drives a 2011 cts v as far as i know only had exhaust otherwise stock and auto, he ran a 12.56 at 116, i always thought those were pretty fast cars stock, but reading around here i feel like my car should run faster so...
What would you guys estimate a decent track time to be for my car and im certainly no john force lol, mods as follow so you guys don't have to check my garage

Rotofab intake
Obx longtubes and x pipe, stock mufflers
Rcr dragmaster cam
3000 circle d stall
3.45 gears
Street tires 255/40/19
Made 415whp on most recent tune
 

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Ditch the street tires and you should be running way into the 11s. In good DA, I suspect 11.60s give or take a couple tenths.
 

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Discussion Starter #3
Yeah looking into some stickies soon just gotta recover from trans rebuild a bit lol, I won't be able to afford a proper drag pack till next year so I'm thinking I'll go with 285/40/18 mickeys for now
 

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Really?

My GT ran a 12.26 multiple times in negative DA weather with Livernois stage 1 cam, Vararam, Kooks LTs/high flow cats, tune, and drag radials and stock 2.92 gear. In the heat of the summer, mine would slow to 12.7s.

The OP should be at least 0.5 sec faster than my car with the advantage of his 3.45 gear and 3000 stall...which puts him at mid-upper 11s to low 12s depending on weather. I see that he has an RCR cam so if RCR his helping with the tuning, no reason this car isn't running in the 11's. Rick has a bunch of them in the 11s.
 

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Discussion Starter #7
I would be thrilled with 11s heck Ive never been faster than 12.89 so anything lower and Ill be happy, and no Rick is not involved previous owner installed cam, I would be glad to have him tune it but Im in Ohio, however the tuner I am using its very highly regarded locally especially in the LSX community
 

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with rcr tuning i would say 11.6. but as it sits now high 11s and a bad weather day 12.0 .. even my dod rcr cam with stock rear end went 12.1 in bad weather.
 

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What kind of 60s could you cut before cam upgrade? With some good air now before it gets too warm you should be able to crack or be very close to cracking 12.0 on street tires. I have near similar setup minus cam...(2800circle d and 3.45s) and have cut 1.79-1.83s on a 245/19 street tire but I just worry with that extra power you got that will cause your 60s to suffer until you get a nice radial. You should easily beat the V, granted that car appears to be under-performing some?
 

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Discussion Starter #11
I have not run the car at the track myself yet , previous owner went mid to high 12s but that was before gears and maybe before stall i can't remember exactly what he said, I'm sure it will take some seat time before I am comfortable in the car. I have honestly never dragged a fast rwd car I made a few runs in my g35 but it was stock and the clutch was slipping lol
 

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Discussion Starter #13
Was hoping to go to track tonight but didn't make it, just got the car back from the shop for the trans rebuild and retune. It made 383/355 which is a little lower than the previous numbers but also on a different dyno and no lock on tc vs locked before. Also got some 285s on the back Nitto 555G2s, definitely hook better than what i had before, maybe next week I'll make it out for some times
 

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Discussion Starter #14
So I finally made it to the track and Im a little disappointed, I had a best run of 12.93 with a 2.0x 60ft, I couldn't get the launch down either spun or wheel hopped which was weird the car had not done that before but either way I now have a number to improve upon. A friend of mine was randomly there with his neighbor who has a C63 amg and he only ran a 13.0 so I did feel pretty good about that at least lol
 

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If you are truly making 415 at the tire you should be low 12s AT SEA LEVEL even on streets. DRs might put you in the 11s, espec since you have after-market stall.

If you are making 383, that's a 7.5% reduction which will cost you about 2.5% of QM performance .... or ~3 tenths.
 

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Discussion Starter #16
Once problem I'm having is I can't fully utilize the stall because the tires start spinning before I get it fully reved up, at like 2200 rpms I tried letting some air out of the tires and that helped but didn't fix it completely. If anyone has any helpful tips I would be glad to listen!
 

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So I finally made it to the track and Im a little disappointed, I had a best run of 12.93 with a 2.0x 60ft, I couldn't get the launch down either spun or wheel hopped which was weird the car had not done that before but either way I now have a number to improve upon. A friend of mine was randomly there with his neighbor who has a C63 amg and he only ran a 13.0 so I did feel pretty good about that at least lol
What was the DA when you ran? Can you post the time slip? You're only giving half of the information. We have similar mods except I'm still running the stock camshaft. With a DA of +750-900, I'm running 12.0-12.1. I do run drag radials so my 60' is better than yours but your car seems to be underperforming. If I were you, I would get some drag radials and get your 60' down to an acceptable time and re-evaluate.
 

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OP you are in Ohio correct, so DA shouldn't be terrible, possibly 1500-2000+ on a bad night. With your mods there's no way you should be near upper 12's. I suspect something off in the tune, install. Also what kind of mph are you trapping on these 12.9x passes? Not that dynos matter too much but those numbers seem low too.

As for the C63 if its a stock 6.2L then 13.0 might just indicate poor track conditions/DA as I believe they can run 12.7-12.9 stock.
 
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