Project: Building a 12sec N/A LLT

[kjkjr27]

I'm not sure how much lighter/ heavier my new 18s will be compared to my Nurburgrings I'll have to weigh them when I get them. It will be interesting learning what way is best to launch with the new setup, maybe Mike can help me out

[lscamaro]

Originally Posted by Pro Stock John

If I were V6 auto, I'd do a converter before I would do gears as the converter will help the 60 foot more.

I run my drag radials at 16 psi cold. Skinnies would have gotten me in an the 11's, my 18's are 11 lbs lighter each than the 20x9's I had on there (57 vs 68 lbs). Skinnies would probably be 35 lbs.

I'd do a 3200 stall, tune, exhaust, weight reduction, Nitto 555R drag radials, and skinnies.

That's my plan. Already started doing the research for it. Don't want to lose to much driveability

[kjkjr27]

Originally Posted by lscamaro

That's my plan. Already started doing the research for it. Don't want to lose to much driveability

You sure have a lot of plans lol

[Lil' Nasty]

Originally Posted by kjkjr27

You sure have a lot of plans lol

[Macrackie]

My idea of a poormans rear seat delete as follows...

Remove seat (obvious)
Purchase 1/2" pink or blue board insulation
Cut and sand to fit trunk opening as needed.
Cover in black nylon or cloth
Pop in place with a clamp on latch from the trunk.
Do the same where seat bottom was or add carpet to hide any uglys under seat.

Light weight and cheap.

Not sure what it looks like under the seat but I have folded mine down a couple of times.

[Macrackie]

There are glues that work on foam board if thickness needed to be built up or you wanted to mold lines into it.

[rtcat600man]

Originally Posted by kjkjr27

I'm not sure how much lighter/ heavier my new 18s will be compared to my Nurburgrings I'll have to weigh them when I get them. It will be interesting learning what way is best to launch with the new setup, maybe Mike can help me out

You know I will tell you what I know.

Biggest issue you are going to have is getting both tires hot and sticky, since we are automatics. Can it be done, sure, is it easy, still struggling with that one.

Before investing into the torque converter that so many want to chime in on and some will even claim as much as 0.4 drop in the 1/4, I would look to swap out the rear from a manual so that you have posi. I am just now getting into that research for thinking purposes.

After you get thru the water box, heating them up launching is just like before. Slightly off idle and release the brake while smashing the gas.

Oh and one other thing, if you go with the Mickey Thompson's like I have, your dash will light up like Christmas and your systems for traction control, stabil-trak, ABS braking will all shut down. Not a big deal, but will catch you off guard the first time. When this happens your odometer for miles stops working too.

I put my wheels and tires on at home and drive with them to the track, only 45 minutes away. Your speedometer will be off to as you are using a smaller dia. tire. But our gearing effect goes from a 3.27 to a 3.57

I have run the PSI as low as 18 and thinking maybe I should try a little lower yet too.

[kjkjr27]

Originally Posted by rtcat600man

You know I will tell you what I know.

Biggest issue you are going to have is getting both tires hot and sticky, since we are automatics. Can it be done, sure, is it easy, still struggling with that one.

Before investing into the torque converter that so many want to chime in on and some will even claim as much as 0.4 drop in the 1/4, I would look to swap out the rear from a manual so that you have posi. I am just not getting into that research for thinking purposes.

After you get thru the water box, heating them up launching is just like before. Slightly off idle and release the brake while smashing the gas.

Oh and one other thing, if you go with the Mickey Thompson's like I have, your dash will light up like Christmas and your systems for traction control, stabil-trak, ABS braking will all shut down. Not a big deal, but will catch you off guard the first time. When this happens your odometer for miles stops working too.

I put my wheels and tires on at home and drive with them to the track, only 45 minutes away. Your speedometer will be off to as you are using a smaller dia. tire. But our gearing effect goes from a 3.27 to a 3.57

I have run the PSI as low as 18 and thinking maybe I should try a little lower yet too.

Well can't wait for that experience haha!

[rtcat600man]

Originally Posted by kjkjr27

Well can't wait for that experience haha!

Again that is only if you use tires with dia. that are different enough from the fronts for the system to register this and shut everything down. You can always look for something closer to the correct dia. and not worry about this ever happening. Just don't get to wide a tire. Our V6 set up like we have them doesn't really need more than the 265 width. You have to get the hot and sticky and the last time out for me I think it was just to cold of a day.

I plan to try a couple more times next year yet.

[RubyCamaro]

Always learning & enjoy reading the posts here.

[Pro Stock John]

Originally Posted by rtcat600man

You know I will tell you what I know.

Biggest issue you are going to have is getting both tires hot and sticky, since we are automatics. Can it be done, sure, is it easy, still struggling with that one.

Before investing into the torque converter that so many want to chime in on and some will even claim as much as 0.4 drop in the 1/4, I would look to swap out the rear from a manual so that you have posi. I am just now getting into that research for thinking purposes.

I back into water, middle of the water box. I then do a very short spin, and pull to the front edge. If I don't do that spin both wheels might not spin.

A former auto/v6 friend told me that the V6's shift pretty high. In the L99 auto the stock converter is about a 1600. I went 3200 and it's very drivable. I did try a 4000-4200 (the one that's in Rhino's car) and it was way too loose for a daily driver.

I would do a converter and a posi, drag radials, the others stuff you do, and I think it's possible.

[kjkjr27]

Originally Posted by rtcat600man

Again that is only if you use tires with dia. that are different enough from the fronts for the system to register this and shut everything down. You can always look for something closer to the correct dia. and not worry about this ever happening. Just don't get to wide a tire. Our V6 set up like we have them doesn't really need more than the 265 width. You have to get the hot and sticky and the last time out for me I think it was just to cold of a day.

I plan to try a couple more times next year yet.

So that will happen then if i run with skinnies up front and might not happen if I run with my normal 275/40/20s?

[KMPrenger]

Originally Posted by kjkjr27

So that will happen then if i run with skinnies up front and might not happen if I run with my normal 275/40/20s?

Its all about the diameter of the tires. Stabilitrac works by making sure all four tires are rotating at the same or a very similar speed. When one tire starts spinning at a different rate, it knows something is up and that's when it interferes to correct the issue.

So if you could find some lighter rims/tires, or skinnes to put up front that are basically the same height as the rears you are running, you shouldn't have an issue. If what your running now is a similar height as the DRs you are getting you should be fine, but if you are running what Mike has, they won't be.

[scrming]

Originally Posted by rtcat600man

You know I will tell you what I know.

Biggest issue you are going to have is getting both tires hot and sticky, since we are automatics. Can it be done, sure, is it easy, still struggling with that one.

Before investing into the torque converter that so many want to chime in on and some will even claim as much as 0.4 drop in the 1/4, I would look to swap out the rear from a manual so that you have posi. I am just now getting into that research for thinking purposes.

After you get thru the water box, heating them up launching is just like before. Slightly off idle and release the brake while smashing the gas.

Oh and one other thing, if you go with the Mickey Thompson's like I have, your dash will light up like Christmas and your systems for traction control, stabil-trak, ABS braking will all shut down. Not a big deal, but will catch you off guard the first time. When this happens your odometer for miles stops working too.

I put my wheels and tires on at home and drive with them to the track, only 45 minutes away. Your speedometer will be off to as you are using a smaller dia. tire. But our gearing effect goes from a 3.27 to a 3.57

I have run the PSI as low as 18 and thinking maybe I should try a little lower yet too.

Yep, big claims on a looser torque converter but have never really seen anyone prove that out!