Test-N-Tune, X half a dozen!
 

This thread spans over a year or more, but this is the condensed version:

Trip 1: Had a small meet up right before the track:

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Track was pretty full and we started late, so i only got 2 runs. First run:

Far lane: 98 Z28, built M6, 4.10s, VR reverse split cam, stock heads, full exhaust, bolt ons, 315 Nitto 555Rs on the back.

Near lane: Very close to the same except 3.73s, Cam Motion cam, and ET Streets on factory wheels.


Time slip:

Left........Right
.468.......105 Reaction
1.94.......1.65 60ft
7.98.......7.54 8th E.T.
90.4.......90.2 8th MPH
12.26.....11.85 1/4 E.T.
115.9.....114.1 1/4 MPH

Here's some pics from this race:
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2nd race:

Far Lane: Z28, 6.0 LQ4, built M6, 12 bolt with 4.56, Pat G cam, TFS 215 heads, bolt ons, Mufflex exhaust, 28 inch ET Streets

Near lane: Same as near lane above


Time slip:
Left.......Right
.569.......117
2.15.......1.71
8.37.......7.63
89.5.......90.0
12.63....11.95
117.5....113.8

More pics:

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Couple more videos:





As a sidenote, I got my shifting issues worked out. Turns out my mph on my trans tables was off by about 5 mph and it was causing all hell to break loose at WOT. Its fixed now so next time the car should see some honest mid 11s cam only. Waiting for the heat to die down some.

Fast Forward: Went back to the track this past friday. Finally got the car off the limiter. Best run was still about 11.8x. Couldn't get it to go any faster. I had a new best 60ft of around 1.58 and a new best trap of 115. DA was about 1650 at the time of the runs. Couldn't seem to get the ETs down though. My only 2 vids from that night are ****ty but I will link one from someone else:


Car was filthy: Right lane

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Left lane:


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Fast Forward Again: Well we headed back out. Car ran a new best, but still had more in it. Couldn't get it to leave good. Here are the slips in order:

60ft...........1/8....................1/4
1.65......7.58/89.5...........11.94/112.7
1.65......7.55/90.6...........11.87/113.5
1.73......7.62/90.8...........11.93/113.9 Spun some out of the hole.
1.62......7.51/90.2...........11.84/113.6
1.62......7.47/91.0...........11.77/113.6
1.62......7.47/91.1...........11.77/114.9


Pics and vids:

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4th Trip out: Track altitude: about 250 ft, DA for the night: about 2250. Yeah it was muggy with about 80-90% humidity. But we ran anyway for fun. Car ran good for the weather I thought, and pulled the driver tire 6-8 inches every run. Felt awesome :drive:

Here's how the slips stacked up:
Time...7:14.....7:18.....9:08.....9:34.....9:40... ....9:49
60'.....1.591....1.602...1.581....1.590...1.596... ..1.608
1/8.....7.350....7.342...7.316....7.344...7.321..... 7.327
1/8.....92.48....92.66...92.76....92.47...92.91..... 93.06
1/4....11.573..11.539..11.525..11.568..11.526...11.5 17
1/4....116.82..117.13..117.14..116.55..117.08...117. 59

And a couple of vids:


Since the last run it has a Fast92, AI 243s, PA Racing K member, Midwest bumper supports F+R, Strange 12 bolt. I was running about 3/4 tank of gas and an ice chest in the back. I know the 12 bolt is slowing me down some (over the previous runs) but I drove home so it's worth it :D Car is also tuned by a rookie tuner (me) and is set to conservatively shift around 6400. It ran exactly how you would find it any day on the street. Nothing added or subtracted.

Have run recently about 10 more passes. Changes are: Lightweight battery, Midwest chassis drag bar, speed inc carpet, sjm abs delete, firecore50 wires.....ET streets are bald and it was acting funky coming out of the hole but I did get a new personal best, 1.56 60ft, 7.20@95. Track wasn't running 1/4 at the time but I'm predicting it was a legitimate 11.30 pass. New changes are removing inner fender supports, removing front sway bar, aluminum radiator, and a full 17"Racestar setup. Inching closer to 10s NA I hope.

Here's some eye candy:

Stock carpet ready to be pulled:

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Pulled the gauges to delete the idiot lights:

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Letting the new carpet breathe, it does still have some padding under it, but it is a little louder then stock:

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Found under the stock carpet.....winning!!!

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Lightweight battery getting its first charge:

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Simple aluminum flat bar hold down:

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Midwest drag bar:

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Firecore50 wires:

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Full 17" Racestar setup. Hoosier ProStreet 26x7.5x17 fronts, new ET Radials in the rear:

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Peek-a-boo:
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For the bushes:
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$135 shipped:
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Truth be told, the radiator swap and inner fender cutting was a kill two birds with one stone kind of deal. The last outing to the track I ripped a huge gash in the bumper. I installed a bracket to move my car ramps closer for when I load my ATVs on my car hauler....and I new it was close but had loaded successfully several times before. This time I wasn't so lucky.......

Ouch:
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Did a quick patch and we raced anyway:
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But I needed a fix...so I found a place called OnlinePartsBin (or something of the nature) and they did a VIN matched paint and then shipped the bumper for $250. So I took it apart while I waited....lead time was about 2 weeks.

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I've always hated the China halo lights so I found a set of OEMs to go back on:

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The busted bumper and china lights got hung for decoration:

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And, 3 weeks later Fedex drops this beauty off:

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Thanks EmblemPros:

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Two more random tire pics:
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Time....7:56......8:05.....8.35.....8.39
60'.......1.59......1.55.....1.67.....1.55
1/8.......7.24......7.19.....7.35.....7.18
MPH......94.18....94.37...93.97...94.24
1/4.......11.40....11.34...11.52...11.32
MPH......118.4....118.7...118.2...118.8

Wheel spin on the 3rd pass, 64/6500 shifts for 1 and 2, then 6700 for 3 and 4. Looks like I gained next to nothing by putting the shifts higher.

Time.....12:17.....12:35......12:46.......12:59
60ft........1.52......1.53.........1.53.........1. 54
1/8th......7.14......7.14..........7.13........7.16
MPH........94.2......94.4.........94.5.........94. 3
1/4........11.30....11.293....11.27......11.32

No changes.

Most recent, Go-Pro


At 0:25 in this one


At 1:00 in this one:


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Waaay righteous! Thanks for sharin' that red badaSS!!!:icon_cool:

yes nice I see you have built it up ,yes I would even think about 5 core raceing radiator ,,but I guess you like the track ,an know that the track is the place thing break ,no matter what sooner or later ,

Midwest Chassis rear bumper support but it isnt new.....
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A full 10lbs of metal removed, about 1 pound went back in.
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Losing the catback and 4" cutout, going to a single 4" bullet. Total weight lost will be a minimum of 35 lbs.
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I love stock appearance......

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To come.....
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I also have a 5 gallon bucket of misc brackets, bolts, back of the radio etc thats up to 30lbs and Im not near done yet. I also found a full gallon of coolant in the spare tire well so figure that was an extra 8 pounds I was dragging around for nothing :bang:

Got a chance to tinker some more.

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Decided to run the 4" pipe all the way out the back for the fumes, and the drone. I realized I had to delete the upper panhard support brace to make room for the pipe. I don't trust running without one so I fabbed up some supports of my own.

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Running vertically supporting the bracket

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This is what I started with, to go after the Y merge.

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It snaked over the rear end quite nicely, with a little gap on top and bottom. Its ****ing loud.....

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After some inspecting I realized WOT blasts make for super hot exhaust pipes. Was too close to the gas tank for comfort and melted a tiny bit of the bumper. So I wrapped the rear section and repositioned the tailpipe slightly.

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The cutout i removed.
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Got to tinker some today. Switched from a Chrs1313 AC ram air to a SSRA Megamouth (non-AC) ram air

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Cut out the lower radiator support. It was worth 5lbs. The edges of the bracket are still strong enough for an adult male to hang from. I'm gonna run some aluminum flat bar across to give the air dam something to mount to.

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Before my 11.2 run I had done the following weight reduction:

ABS Delete: 10
Bumper supports F+R: 40
9.5" converter: 15
Cruise delete: 5
Power seat delete: 10
Lightweight battery: 20
Spare tire delete: 20
Monsoon delete: 20
K Member: 30
Front swaybar delete: 15
Midwest rear bar: 5
Front fender cut: 5
Lightweight carpet: 20
Driver airbag delete: 5
Total: 220 lost

Since I've done:
AC Compressor/bracket: 20
Sway bar brackets: 5
AC fan delete: 5
Lower radiator support cut: 5
Catback delete: 30
Misc bucket of brackets: 35
Spool: 20
Condensor and evap: 5
Coilovers: 10
Spare tire well delete: 10
Upper panhard delete: 5
Total so far: 150

Total 370 lbs.

I was concerned with the air going around the radiator since the condenser was gone. So I fabbed up a couple pieces out of ABS, pictured here plus the hole I was facing.

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Life gets in the way at times, but I'm still working on it.

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UPS delivers happiness in a box.

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3120, stock brakes, no driver, 1/8th tank of gas.

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Found this guy wondering around the shop. I taught him the way home.

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Center of lower radiator support cut out

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Airbag computer with bracket:
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Compressor with one hard line still attached:

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Ebrake handle
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Ebrake cables

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Passenger airbag

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AC side cooling fan

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2 door speakers

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I originally got this kit, with Strange aluminum hubs. After looking I was sure it would not fit behind a stock wheel due to the design and the large dust cap. After searching around I found most drag wheels allow for the dust cap to come through the center. Since switching wheels was not an option I contact Midwest Chassis and they revised the kit to work with a stock hub and therefore stock wheels.

The kit for drag wheels:

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Here's the modified kit and brackets:

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So once I had all the correct parts, I fit it all to the car. You will need either brake line adapters, or a brake line kit. I got the kit from Midwest and it work well. The old hard lines are a pain to break free from the stock adapters so go easy on them. You can see the new line and adapter in place in this picture.

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Here they are behind the wheel:

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And the weight. I assembled all the strange stuff on the scale and got 25lbs total. I assembled one side of the stock stuff and got about 31lbs. So 62 vs 25. So a 37 pound weight drop:

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For driving impressions, the first few stops felt about like stock. After say a half dozen stops the pedal got more reactive and sensitive and the brakes had a very nice initial bite. Very confidence inspiring. I did not do any hard panic type stops but for normal driving you wouldnt know they were there other then the fact that the car seems to stop very well.

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So we know what the new stuff looks like:

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Yanked the old stuff off and promptly put it for sale: Its a BMR setup, which has worked good for me.

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2 concerns, weight by needing to add the stock transmission crossmember back and ride quality. So lets look at the weight....The BMR torque arm was 25lbs. Then their crossmember was 10 pounds. Making the old setup 35 lbs.

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Here's the stock trans crossmember: Its fully boxed and heavy. It should be as the torque arm is mounted to the trans when stock:

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The stock trans crossmember:

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We are gonna un-box it by cutting the stock welds.

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Now this little piece removed might not weigh much:

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I mighta hole sawed it too......

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TA crossmember cleared my Flowmaster 3 into 4 merge very comfortably.

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The Midwest torque arm: about 17lbs.

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And this is their crossmember with DS loop:

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The conclusion, the BMR setup was 35. The Midwest is 17, I was able to get the TA crossmember down to 5 by eliminating the DS loop, so we are at 22. I was able to get the stock transmission crossmember down to 4 so that's 26. We lost 9 pounds.

Driving impressions: Nice. Quiet, not harsh, I'm really impressed. Traction is about the same on the street. Pinion angle is -2.5.

So I finally decided to collect the fruits of my labor. Track time, TNT, we been planning it for over a month. Well the weather turned out really nice and DA was in the 750-1000 range. So, everyone and their momma came out.

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Long story short I made three passes. I adjusted the coilovers in between each pass looking for traction. The second two passes I wheel hopped bad. Due to the crowd I decided that was enough for me for one night. I did noticed with the new brakes I can brake stall really high now. With the stock brakes it would push through pretty quick. I notice a bad vibration on the way home, and Im thinking its driveshaft related, broken ujoint or something. I made it halfway home and had to call the old lady to come bring the car hauler.

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This, doesn't look right.

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Decided to not chance it and just make the repair on the trailer:

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Wheel holes are wallered out, brake rotor holes are too, and the centering register on the axle is ****ed. So I will be replacing all of them. Caliper took a little rubbing from the rotor but looks mostly cosmetic.

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Strange was so kind to drill both 12mm and 1/2" stud holes. I will be going back with 1/2" this go round to see if I can stop this **** from happening again.

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Here's the passenger side wheel studs.....whoops. Attachment 12522

So I waited about a week for new 1/2 studs and a brake rotor from Strange. I didn't get in a hurry to get it fixed due to I'm still waiting on a wheel. I went ahead and patched it together yesterday and put the stock wheels back on the rear to get it off the trailer.

This is the damage to the caliper where the rotor rubbed the inside of it. Looks like i stopped in time and didnt do major damage to the caliper.

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Here's the new 1/2 studs after installation.

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Here's the complete assembly with the new center register and rotor. You can see from this picture the rotor is stud-centric meaning it depends on the studs to center itself. Common sense tells you if it fits with 1/2 studs and 12mm are smaller, then there was some slack with the 12mm. Enough to cause an issue? Well I cant say for sure but I do believe these were designed to work best with 1/2 because the fit is much tighter. Strange should mention this detail in their product literature I think.

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I'm making a lug nut swap also. I'm including this picture for those who may not be familiar. Stock wheels use a hex nut conical seat on the top left. Drag wheels use something like the mag type hex nut with a washer. That type goes through the wheel to grip the stud all the way at the base making it stronger. Even with stock wheels you can use the hex nut ET (extended thread) and it gives a similar effect of the mag type where it actually passes through the wheel and engages more thread and in to a further point.

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Damn!!!!! How fast are you hope by for? Btw do you have the same handle on LS1tech?

Would like to go 11.0s but we will see. I have the same screen name everywhere.

With the right da, tire, suspension etc you should hit close to 11.0 yup your name looked familiar and I remember following some of your threads on tech!

Making some good use out of a pair of old 10 spokes. I figure these will hit the lugs a little softer then the radial giving the lugs a chance to survive plus they are sticky as hell so traction shouldnt be a fight like it was with the 18s. This is a Hoosier full slick 28x10x17.

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yes there sharp rims from an ss ,guy has 3 of them for sale in 4th gen wheel tires ,like I said to him ,I would buy them as replacements ,over time the front ones where out faster then the rear ones ,may get them cheap,i like the tires they look great how good are they on the highway

Kill mode!

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need some 370 or 390 gears for the rear. you need to retorque the lugs after a while when they are new. wonder if that had something to do with it. i had a rear come off on the streets one night, rear jumped up a couple feet. i think some idiot losened the lug nuts at the party... anyways torque them down at 90-100 ft lbs and do it again after a days driving. that is unless you feel a vibration,,, lol, you are so lucky.

Rear has 373s in it now. The lugs werent new, they were well seasoned....couple years old.

Delay from technical difficulties.

I took off work for the race saturday, I had everything ready on the car. Car was washed, truck and trailer were washed and loaded.....and the weather just wouldn't cooperate. Friday night all cleaned up we sat in the garage hoping things would clear for the race the next morning....

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They decided to postpone the race till the afternoon and around lunchtime when we thought the weather was going to break we headed to the track. That didn't work out and we ended up coming home dripping wet and the race postponed.

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Around midnight the weather finally got moving and they had a fresh water logged track to prep for an early AM race day.

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Sunday morning the weather was fantastic, temp in the 60s, and DA ranged from negative 400 or so to around 500 last time I checked.

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Couple of random staging lane pics:

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Fastest pass of the day, but I only ran 3 times. It went .08, .09, .08 in that order.

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And finally some go pro footage:

I'm at 3:25 on XXX Motorsports footage:

wow good stuff those rear tires helped alot I am sure,left them in the dust ? so you raced another 4gen ls1 an a gto sounds great,looks like some of the less experienced drivers just lost out ,but that was cool ,makes me re think my position on raceing ,the track is the way to go ,safer I think then street raceing? are you running a glass pack style muffler full bore ,I have single chamber since putting true duals ,an blew the chamber so now I need to run a full bore of some kind ,I was thinking magnaflow wich I have now ,an will trade them for the full or glass pack ,one good thing is they have life time warranty

Buried up in the pics somewhere is the muffler. Its a 4 inch Dynomax bullet.

So I figured while I was doing a gear swap I'd freshen up a little bit. I've always hated the fact that I spray painted the rear end in this car. Money was tight when I ordered it so saving money was important, now I can go back and undue that mistake. So ordered up some Richmond 4.10s. Gonna hold onto the Motive 3.73s for now, they may end up going back in one day.

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Got it pulled and hung up for full disassembly.

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And off to the powder coat shop!

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Going more low key this go round, went with gloss black.

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And that little custom touch that makes it your own and unique.

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Been running a turn down for a while. I'm not about that life anymore. So I extended the 4" all the way out the back with a little heat wrap to help the gas tank.

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All that hard work, lets relax by the BBQ grill with some LSX buddies.

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Should have it reassembled this week, a few tuning tweaks, and off to the track March 11th weather permitting of course.

woh,,, all that food,,, how much help you got,,,