ltdriser

Reaction - 1.097
60' - 2.184
330'- 5.817
1/8 Et - 8.613
1/8 mph - 88.92
1/4 et - 12.907
1/4 mph - 114.87

This was the best et I could get all night. After running two 13.0x back to back with a max trap of 116.

Car is a 05 manual LS2 cam, cai, headers, exhaust, tune car with street tires and dynojet @425whp/381wtq.

2nd time to the track, first time with favorable weather. I'm just curious how some veterans see these numbers and if my numbers seem to line up with my dynochart. If they don't where do I start looking?

GUM3Y

There is a half second in your 60 foot times that are probably a combination of street tires/spinning off the line and your launch rpm. The other variable is what the DA was. Depending on the DA, and whittling the 60 foot time down you are probably pretty close to where I would guesstimate that car.

KW Baraka

What are you running for gears, and what are your cam specs?

Adding a 'good sized' cam will compromise your torque under the curve; sometimes significantly depending on the cam.

You may want to consider some 4.10 gears if you're still running stock.

KW

ltdriser

Cam is a 231/242. I just thought my trap speed seemed low for guys w similar mods. I was expecting 120+ but I'm not even close.

HOXXOH

My very first pass with a bone stock '08 (est 360 whp) was better than your best pass. You possibly have a tuning issue, some really bad fuel, a clogged air filter, running at a high elevation track in terrible DA, or a combination of those issues. Since your 425 dyno HP (assuming that's not a phony number) should have produced much better results, I'd be checking the air filter first for a plastic bag restriction.

ltdriser

I've went ahead and purchased HPtuners for some data logging to try to get a decent idea of what's going on. The 425, I don't think was phony. It was on the printout after the tune. I'm really interested to see what is going on. DA at the track was like 1700 feet. I just have never felt the car was running/making the power it "should". I wish I would have got before and after Dyno readings.

Slow98teg

How are you launching and what rpm are you shifting at?

ltdriser

I'm launching at 2500ish and riding the clutch a bit. Then feather/modulate the throttle the best I can to not spin. Once I am in third gear its full throttle until the end, I get into 4th just before I pass the end marker. I'm shifting at 65-6600ish. I'm not too concerned about getting the quickest time in the world, I just want trap speeds that match my dyno reading or better. I have no intention of buying drag radials or anything like that, just trying to have fun. I just feel like the car may be lacking somewhere and Im trying to determine if its the car or driver.

Slow98teg

More than likely driver. I got my c6 last summer and started off bottom 12s and quickly learned within a few trips to the track. Dipped into the 11s on street tires and then got radials and ended low low 11s by the end of the year. Just takes practice and learning the car. It helps to write down on each slip key points of the run. Like launch rpm, tire psi, shift points.

jimmyray

2 tips. Stickier tires and launch technique, because Every 0.1 in 60ft equals 0.2 in ET, as a general rule.
On your first second and third shift, shift as close as you can to the red line. It almost always pays off to wind the engine out.

FWIW, in my stock 2008 C6 LS3 6-speed, I managed a 12.375 with my daughter and Luggage in the car, while we were on the Hot Rod Power Tour a few years ago at Memphis International Speedway

HOXXOH

If you want mph numbers, launch in 2nd gear and shift to 3rd early around 6000 RPM. You need to stay in the torque curve, not the HP curve. A 2nd gear launch at lower RPM will hook quicker too.