Low track times our of SLP ZL585

[Smkymts]

Although interesting video to some, this thread is not the place for this type of infomation or illegal street racing.
I asked for dragstrip results not proof of pre-pubescent kicks. Do everyone a favor, stay off the streets and the serious thread topics.

Our local Homecoming Queen and her runner up was burned to death when street racing idiots rearended her car causing it to explode on impact while stopped at a redlight on her way home from a football game.

The 17 year old Mustange owner and the 45 yr old Viper owner are now doing 15 yrs each for murder in Tennessee state Prison.
Racing belongs on the track not the streets. $5 gets you and your car in almost every Thursday here. Was their lives worth $10?

[Smkymts]

The good news is that SLP does monitor this website and what the members have to say. Dave Hamburger, director of Marketing and son of Ed; as well as Hank Daniecki, Director of Engineering; both contacted me on this website. That lead to a personal phone call to discuss the details.
Just like forum member -Ted of JannettyRacing, SLP wanted to see the DataLogs to determine what is actually happening on the track. I agree with SLP that the car is producing the advertised horsepower given a 18% drive train loss.
But no where near the track numbers one would expect for the horsepower. So I will be collecting the Datalog and sending it to SLP to inspect and a copy to Ted to independently review and see if both conclude the same. Please stay tuned for the conclusion.
And a grateful thanks to SLP for a fast response and to Ted for a generous offer to review the logs.

[McBeevee]

That's great to hear Smkymts. I look forward to hearing the solution

[MikeOD]

I hope you can come to a decent solution too. I do NOT want to sound like I'm insulting SLP in any way...but I had a 2010 SLP ZL575 on the dyno, and it was nowhere close to the advertised horsepower. The tune in it needed a LOT of work, but when done, the car put down power that finally did make sense for the advertised number...and it also then felt a good deal faster than my regular old bolt on LS3 SS.

[Smkymts]

Originally Posted by JANNETTYRACING

Even with all of the driving factors, the MPH tells the story, this car is not making the power on the track that it shows on the dyno.

There are So Many things that can cause loss or lack of power it would really take a set of Trained Eyes and ears to diagnose your problems.

Logging would be an Immense help, you should have an SCT tuner set it up and log your Runs.

Ted.

I have collected and sent off 4 sets of data logs to Ted and SLP for review. Awaiting their analysis. stay TUNED!

[lewylew]

I love my SLP car ran 11.95 stock. Hope you get your problem fixed.

[Falundir]

Mine is a mostly stock Vert right now that I will be tracking on Wed. I'll post times for reference. The following week I should be at 500hp NA and will track on wed again and post times if you haven't heard back by then.

Best of luck in getting this resolved.

[Smkymts]

Originally Posted by lewylew

I love my SLP car ran 11.95 stock. Hope you get your problem fixed.

Now see that's what I am talking about. Those are great numbers. The same numbers all the magazines reported and SLP advertised. I would have been thrilled with those numbers and happy with low 12s.
But I am still not down on SLP. I love my car- in sickness and in health, she's just a little under the weather, no reason to kick her to the curb. So I will keep the faith.

[Smkymts]

Originally Posted by lewylew

I love my SLP car ran 11.95 stock. Hope you get your problem fixed.

I see your SLP is meth injected. Did you see a noticable cooling of the supercharger with it? Did you baseline Dyno before and after to see if it gained you much HP?
I have read some theories that the meth eats away at the SC's gaskets. Causing leaks and internal damage. How long have had it on the supercharger? Your thoughts?

[lewylew]

No meth on my car. Thought about it, but decided against it.

[SUX2BU]

Originally Posted by 20camaro12

Not to sound completely stupid here, but have you put slicks on it and see if it pulls anymore? I have yet to take my camaro out to the track so I can't compare. For a fully loaded SLP car like yours, you should be hitting low 12's easy. Your looking at a 8.5lbs to 1hp ratio. Something isn't right here. You sure your knock sensor isn't detecting something it shouldn't and retarding the spark? (I said retarding lol)

With 101 mph, a stickier tire is not going to do anything.

Originally Posted by MarylandSpeed

You need to keep in mind..you already have the heaviest, slowest Camaro in the convertible.

Originally Posted by JoshBobGuptaMarley

Why would you buy a convertible for anything other than cruising. They are not race cars and will never have good times. The convertible adds 400 pounds to the stock weight. The body flex around corners is not helping. Nothing about the convertible is friendly to track time.

Just because it's a little heavier doesn't mean you can't get a goot time out of it. You should see Gingers FAT ass get out there and do her thing!

She is currently the #8 fastest bolt on car (corrected for DA) and I believe I'm the ONLY convertible in the top 43! Not bad for a HEAVY convertible amongst a bunch of coupes hundreds of lbs lighter.

Originally Posted by Smkymts

Thanks for all the comments. Most are helpful and tell me that I am not crazy. It didn't seem right to me either. But SLP has seen this thread and wants me to contact them now. I haven't Dataloged, and didnt want to mess with the tune and have SLP void its warranty. As for gas, I alway use 93, but added 4 gal. of 103 fuel at the track fir a total of 5 gallons fuel, 240lbs driver, no extra dead weight, stock 20x10 Pzero tires, shifting 1st-2nd at 6000rpm, never shifting to 4th, crossing finish line at 5900rpn in third. Engine temp at greenhorns was 191. Tried launch control and no LC. At track start time temp was 91 degrees but fell to 79 by the time I reached the finals of bracket race. Adjusted alt. was 1700feet. And I was at 3000rpm launch. But lime I said, I am nor counting the times I had wheel spin or missed a gear. Had many excellent runs with no problems, other wise I could not have take 1st in a field of 30.
With respect to JoshBob and Padre This was a drag race not a road race and the swaybars and springs had not been installed yet at time of the run. I did not purchase the convertible to race, I took it to the track to see the time numbers.
As to the track, for those that don't know, this is a NHRA certified track and you can't run beaters at this track and must go through track inspectors to run. The only down side to Bristol, is it's known for being a slower track because of the altitude and weather air conditions being trapped between two mountains. But John Force loves the track and wins here all the time. The day I took it to the track, officals announced that it was the best track conditions the entire year with the lowest adjusted altitude.

As for Maryland Speed, you must not have read completely, I know how to drive. You don't beat fields of thirty racers and take first if you don't know how to drive. And I am fully aware that you drive a lite weight two seat turbo 4 cylinder different than a heavy 6sp manual. Don't take this wrong, but I wa not bashing SLP or anyone. I simply posted my concern that something seems to be off if all reports from the magazines are actually correct. I openly started that the horsepower seemed to match SLPs posted 585 if you use 17-20% adjustment lost fro drivetrain. It's just I can't figure out why the car won't break 13 sec 1/4 mile. Maybe it's because it's the heavier Convertible which was not used in the magazines investigation of SLPs zl585, and the slow track conditions, but would that add up to over a sec in the 1/4????
Thank you again to those with positive comments/concerns. This is the best forum on the web!

I don't know what to tell you man, that dyno # definitely doesn't match that MPH. Hell, my car COMPLETELY stock with only 500 miles ran a crappy time 0f 13.9 but the mph was still 104 with a density altitude of 2,640 feet! The same day she dynoed 367 rwhp 365 rwtq.

With just bolt ons she dynoed 426 rwhp 422 rwhp and clicked off a best of 12.35 @ 113 with a density altitude of 1,429 feet.

I'm hoping to get in the 11's with some negative DA and another small change.

But hey at least your car is GORGEOUS!

[Smkymts]

Originally Posted by lewylew

No meth on my car. Thought about it, but decided against it.

Sorry about that. I read it and missed that it was a possible future mod. My bad.

[fldrummer]

Originally Posted by SUX2BU

With 101 mph, a stickier tire is not going to do anything.



Just because it's a little heavier doesn't mean you can't get a goot time out of it. You should see Gingers FAT ass get out there and do her thing!

She is currently the #8 fastest bolt on car (corrected for DA) and I believe I'm the ONLY convertible in the top 43! Not bad for a HEAVY convertible amongst a bunch of coupes hundreds of lbs lighter.




I don't know what to tell you man, that dyno # definitely doesn't match that MPH. Hell, my car COMPLETELY stock with only 500 miles ran a crappy time 0f 13.9 but the mph was still 104 with a density altitude of 2,640 feet! The same day she dynoed 367 rwhp 365 rwtq.

With just bolt ons she dynoed 426 rwhp 422 rwhp and clicked off a best of 12.35 @ 113 with a density altitude of 1,429 feet.

I'm hoping to get in the 11's with some negative DA and another small change.

But hey at least your car is GORGEOUS!

I was just gonna ask the OP, before I read your post, what altitude is the track you're running at (since your avatar reads N.E. Tennessee, which sounds like Appalachian Mountains territory)? High altitude could have a big effect on your ET as well.

*Edit* Sorry OP, I guess I didn't read the whole thread thoroughly, the first time. Bristol Speedway = 1,496' Elevation. 'Just looked it up.

[Smkymts]

Buried in the thread, I listed that the adjusted altitude (meaning, weather conditions made it seem like like it was higher because of pressure & humidity) the day I posted the best time of 13.2, was 1700 ft.