It was hot out yesterday maybe 90 here in Illinois, but I still dont understand why it was this slow. My 60 foot was 1.7 and the car is full weight... can someone shed some light for me???? Thanx Brian

Performance Parts

• Cam - Comp Cams 231/237 .589/.595 112 LSA
• Heads – ETP 215cc Runner 59cc
• Springs – Comp 977 .650 Lift
• Pushrods - Comp 8.1
• Injectors – Ford SVO 30lb
• Throttle Body – Nick Williams 90mm
• Timing Chain - SLP
• Oil Pump - SLP
• Spark Plugs - NGK TR 55
• Spark Plugs Wires - Taylor 10.4mm
• Crank Pulley - ASP
• 160 Thermostat - Hypertech
• Air Lid – MTI Clear
• Filter - Holly
• Air Temperature Modulator - SLP
• Bellows - SLP
• Intake Manifold – Fast 90mm
• Transmission - Dr. Evil Stage 2 4L60E
• Torque Converter - TCI 3500 Stall 2.5:1 STR
• Shift Kit - Transgo
• Trans. Cooler - B&M 19,000 GVW
• Rear End – Dana S60
• Gear – 3.73
• Driveshaft – Speed Inc. Custom Length
• Exhaust - Magnaflow
• Headers – Hooker Longtubes
• Y-Pipe - Hooker
• Cut Out – Electric Qtech Finish Line Performance

Suspension

• Torque Arm - BMR
• Springs – Eibach Lt1
• Shocks - Bilstein Revalves
• Subframe Connectors - BMR
• Rear Lower Control Arms - BMR
• Panhard Bar - BMR
• Strut Tower Brace – BMR
• Sway Bar Links - Moog

Brakes

• Calipers - Ls1 J&J Powder Coating
• Pads – AC Delco
• Rotors – iRotors
• Line Lock - SLP

Appearance

• Wheels – American Racing Torque Thrust II
• Tires - Mickey Thompson Et Streets 275/40/17
• Gauges - Auto Meter Trans Temp. / Air Fuel / Water Temp.
• Side Markers - Afterthoughts Auto
• Rear Filler – Blacked Out
• Valve Covers - Corvette Custom Made
• Window Tint - Lumar 5% Shaded Days
• Head Rests - Custom
• Floor Mats - Llyod Mats
• White Inlays - Afterthoughts Auto

Track Times / Horsepower & Torque

• Quarter Mile – 12.143
• MPH – 113.2

• Horsepower - 431.48
• Torque - 401.33

 

How were the other guys doing? 90* is damn hot, I wonder what the DA was. Usually I'll ask one of the track rats how their car is running. I've seen as much as a 5mph difference between good and bad air on a stock Z06.
Your trap does seem low, but rather than start changing things I'd run it again in better conditions and go from there.

 

the environment can play havoc with how your car runs.... wait till a cool night with a good DA and run it again see if it doesnt run any better...ill be willing to bet you see a pretty decent increase in performance

 

I would go with a 4000 stall,ditch the rear seat,spare,frt sway at the track and add some bigs and littles.I went from 12.1-12.2 @112-113mph to 11.50 @117 with these changes. I was in the same boat as you.Just put the stuff back on when you get back from the track.

 

yeah im sure that tci 3500 isnt helping you..if your running all motor i would look into a PT4000 IMO

 

I would like to calculate the Density Altitude (aka DA) of when you ran.
What is the zip code or track name of where you ran as well as the time of your run.

What is full weight? Absolutely no weight reduction? What do you think your car weighs?

What did you expect the car to run?

What are your shift points?
After each shift what did your RPMs drop to?
1-2
2-3


Please post your complete time slip.
60ft
330ft
1/8 ET
1/8 MPH
1000ft
¼ ET
¼ MPH



Thanks

John

 

I agree on the converter....call Mike at Yank, he will likely suggest SS3800 or PT3800/4000....

you should be cutting high 1.5 low 1.6 and should run 11.7 at 115 or so with your combo at a good track/cool/etc,

SDB

 

It was at great lakes dragway in union grove, WI..... I will post the full time slip tomorrow... I dont have it on me.... the car is full weight... everything but the spare tire.... I know the car was shifting at 6800 to 7000 thousand but I didnt get a look at what it droped down to... I was hoping the car was gonna get me in the low 11's.... I hope the info helps.... let me know if you need anything else... Thanx for the help... Brian

 

I run my car in Kaukauna, Wi. I have been to Union Grove as well. I have noticed at 2 mph trap speed differece between tracks, but Union Groves was higher??? Same car same mods, similar temps etc. I dont have near the mods you do and I run a 12.7 @ 108. The temperature didnt help, and knowing WI it was probably humid as heck... Try again on better day and see how much that changes things

 

Tr6 .045"

 

60ft - 1.754
330ft - 5.041
1/8 ET - 7.777
1/8 MPH - 89.89
1000ft - 10.150
¼ ET - 12.145
¼ MPH - 113.37

 

The DA at 2pm was ~3500ft in Union Grove which is brutal. Looking over the mods that you listed and that you only had the spare and jack removed I’ll bet that your race weight was ~3700lbs which is heavy.

Just as a comparison this past weekend I ran 11.15 @ 121.2 with the same basic power mods. The DA was ~2000ft and my race weight was ~3460.
I think you should loose some weight and try again.

John

 

Get some M/T ET radials, 4000 stall and lose a few hunderd pounds. that and run on a night with DA around 1000 and you'll probably hit low 11's if not 10's.

you should be 60ing around 1.50

 

Damn,my motor is bone stock,and i turn 1.73 60' and run 7.90's in the 8th.

 

I do not want to alarm you, but looking at your graph, the cut in graph and rapid fall off/dip after that is usualy an indication of some type of valve float.
Do you have other graphs, if indeed it is float it will happen at same rpm everytime.

Also in you suspension mods, I do not see any relocation brackets for the LCAs, that will kill some traction, and is your TRQ arm adjustable? What is your pinion angle (should be -2 difference between tranny angle and rear angle).
I used to cut 1.5x with a VIG 3200, it just gotta be setup right. (ET streets)

 

Floormats. Lloyd's Floormats are a known issue to cause serious problems at the track.

Just kidding. Hope you get everything figured out.

 

MAN....that is slow for all that cheese.......ouch

 

I my friend feel your pain im in the same boat....I have these mods
and only running 12.20's at 111 1.71 60ft, 7.81 in 1/8th at 89 mph

A4, 3600 fuddle
Patriot CNC 243's
VHP cam(222/228 .551/.551 115)
Every bolton...ported tbody,exhaust,pulley...etc
full UMI suspension..TA, LCAs, PHB, SFC
315 nittos and 3.73 gears

Dont have a FAST 90.....but my POS could not even pull a STOCK C6 from a 70-100 roll and he had a passenger

Taking Catted Y out and changing to Patriot Golds and ditchin the Yellow ZO6 springs in hoping to fix my cars poor high RPM performance

 

who tuned the car? I would have Chad at greenlight motorsports do it. Your dyno run looks good but a dynojet is not as acurate as a mustang dyno. Something with the combo is not right as on th right dyno I bet you only put down 360hp

 

I had Speed Inc tune the car... maybe I just need to try it again on a better day.... and maybe I need to lose some weight.... the torque arm is adjustable, but I do not have any relocated lca..... but the car hooked up very very very good. I could only stall the car up to about 2500, is that about right? Also how much power can you lose witha a high DA? Thanx for the help!!!!