60 ft times are not what they should be. Help!

[Steve GT]

I have tried several different launch methods, but the best 60 foot I've gotten is a 1.9x on DRs and 1.89 on street tires. I have a Yank 3200 TC, Nitto NT05R Drag Radials, and a Livernois Stage 2 cam. Most of the G8s with similar setups seem to be in the 1.7x range and I cannot get anywhere close to that. I've tried launching from idle, launching from 1000, 1200, 1500, etc. RPMS, and even launching how I used to on street tires and nothing seems to help. I've also tried really heating up the DRs and not heating them up as much. No matter what I do, it always seems to be a 1.90-2.00 60 foot.

So what am I doing wrong? I feel like I'm getting all the negatives of the TC (fuel economy, drivability) but none of the positives. I also feel like I've completely wasted my money on the DRs (275/40/17) as I can usually duplicate my best 60 foot times on street tires.

[gr8lover]

What psi are you running on DR? I would try 18psi or so and nail from idle to get the most out of the converter.... make sure you heat of the Dr's and try that launch.... run a bit less than a 1/2 tank gas....

[Steve GT]

I was running 16 psi last night. I've tried various air pressures but I always end up in the same range. I usually have a half tank or less when I'm at the track. Since it is an hour and a half away I can usually plan how much fuel I'll have in the tank when I get there.

When I last spoke to Yank it was recommended that I get a new tune with less TM and reset the fuel trims by pulling the battery for 30 minutes or so after buying nice gas such as Shell. I did all of those things and had Rick send me a new Trans Tune and the end result was the same as every time before.

My car made 390 rwhp on the dyno so I should be putting down much better numbers than this, right?

[wreckwriter]

What are your full ETs and MPHs?

[Steve GT]

What are your full ETs and MPHs?

My best run was as follows.

60 ft - 1.9971
330 ft - 5.4569
1/8 mile - 8.307 @ 93.28 mph
1000 ft - 10.5756 @ 100.99

That was on the stock tires. My best 60 foot of the night was 1.9625 on the DRs. Keep in mind it is a 1000' track so I don't have full 1/4 mile times and ETs. Dragtimes.com shows the DA at 2050 feet at the time of the best run. Earlier in the day, it was just under 3000 feet so it was a pretty hot day to say the least.

[JonnyG2132]

you should easily be getting 1.7s on DRs. Are you spinning at all? How much Tq does your car have

[GeorgeInNePa]

The DA is definitely going to affect both your top end and your 60', but you should still be lower than a 1.89/1.90.

Even in the 1800'-2000'DA range, I was able to get mid to high 1.7s and I had the OEM cam and DoD system.

I had zero TM, none, nada. I also found that my car and MT ET Streets liked leaving at 2000-2000rpm. That was the sweet spot. Much less and it would bog a bit. Much more and it would spin.

Sometimes I could mash the gas to launch, other times I would have to push the pedal down slower as the car moved out after releasing the brake.

One question. You are turning the traction control off, correct?

[fiveoh]

So are you spinning or bogging off the line?

[Steve GT]

Yes, traction control is off.

When I had the car on the dyno it only showed 325.74 RWTQ but they did the dyno in 3rd gear and I'm wondering if it was even done right in the first place.

I agree that the car seems slower than it should be with the mods and I was also a little disappointed with the dyno results.

Could the cam just be the wrong choice for the car? Here are the specs.

http://www.livernoismotorsports.com/downloads/Images/camspecl92stg2.jpg

[JonnyG2132]

Yes, traction control is off.

When I had the car on the dyno it only showed 325.74 RWTQ but they did the dyno in 3rd gear and I'm wondering if it was even done right in the first place.

I agree that the car seems slower than it should be with the mods and I was also a little disappointed with the dyno results.

Could the cam just be the wrong choice for the car? Here are the specs.

http://www.livernoismotorsports.com/downloads/Images/camspecl92stg2.jpg

With that torque you will have trouble hitting 1.7s. Something isnt right there. you should have more torque then that unless the cam is too big. Where did you get it tuned?

[GeorgeInNePa]

Who is tuning it?

[Steve GT]

I don't feel like it is either spinning or bogging off the line. I've had people watch and they all said it looked like it was hooking nicely. I have the cable from Livernois that allows me to upload new tunes as needed. I believe they have done a few of these cams so I'm not sure what could be causing the low torque numbers. Would it be all in the tuning as far as the torque numbers or could something else be causing this hardware wise?

[JonnyG2132]

Ya you shouldnt have that low of torque. It could be tuning, but its hard to believe that the tune could be that far off. most g8s with non dod cams have torque around 375-400

[GRRRR8]

I would have it dynoed in 4th and see where you are at as far as TQ. When Patrick tuned my car he picked up 38ft lbs of TQ and it was noticable in the SOTP for for sure.

[Darkside]

Your cam is not far off from my cam specs and mine puts down 407rwtq. Thats a big difference even considering dyno differences and conditions. But don't feel bad, the two times I've run at the track I haven't gotten below a 2.0 with MT streets.

[parish8]

if your not spining then you cant blame the tires, tire pressure or burn out. it sounds like you have tried diferent loading before the launch from none to alot. sounds like a lack of low end to me.

that looks like pretty big cam to me. it would be neat to see what patrickG thought of it. i had almost the same cam once in an iron 6.0 truck motor and it didn't come on till 4200rpm.

[GRRRR8]

I just noticed the specs as well. With that cam I would think 1 7/8 headers, 3.45 gears and a 3600 stall would do the trick.

[Steve GT]

So the cam is basically too big for my setup? I don't really want a 3600 stall, I'm not liking the 3200 stall that much as-is. Would I be better off just swapping out the cam or dealing with it for the time being?

[JonnyG2132]

That was my first thought. I would try and sell the cam but thats me. Im sure you have a lot up top. its personal preference really

[GRRRR8]

If it were me I would get it on a dyno, see where I am at and see where my tune is. Maximize my tune and see how it does in a bit cooler weather.

[Steve GT]

Does your shop have a dyno? If not, where would you recommend taking it in Houston?

[GRRRR8]

If you are near Houston, go see Patrick G in Victoria. You must make sure your tune is unlocked so he can tune it. It will be the best trip you can make to get a honest idea of where your car is at vs. where it will be when you leave.

[Devilish34]

If it's Livernois it's locked. Do you have the stock file that you can flash it back when get to a shop?

[13 QTR]

I tried the nitto's and didn't like them....2.0 60'. I went to bfg dr's @ 28psi at the track and went 1.69 60' I got a 3k stall and would stall it to 2500. I also just did about a 5-7 second burnout... I would just barely turn on the second stage light and leave on the last yellow( standard tree)....I hate that damn pro tree crap...
I'd try Patrick in a heartbeat.....get that tq up to +390

[GeorgeInNePa]

I tried the nitto's and didn't like them....2.0 60'. I went to bfg dr's @ 28psi at the track and went 1.69 60' I got a 3k stall and would stall it to 2500. I also just did about a 5-7 second burnout... I would just barely turn on the second stage light and leave on the last yellow( standard tree)....I hate that damn pro tree crap...
I'd try Patrick in a heartbeat.....get that tq up to +390

If he's not spinning, it won't matter what tires he uses.

[13 QTR]

If he's not spinning, it won't matter what tires he uses.

I didn't think I was spinning with the nittos...but apparently I was and couldn't feel it.
but a tune by patrick should get that tq up where it should be...

[JonnyG2132]

I tried the nitto's and didn't like them....2.0 60'. I went to bfg dr's @ 28psi at the track and went 1.69 60' I got a 3k stall and would stall it to 2500. I also just did about a 5-7 second burnout... I would just barely turn on the second stage light and leave on the last yellow( standard tree)....I hate that damn pro tree crap...
I'd try Patrick in a heartbeat.....get that tq up to +390

my buddy and I ran 1.7s on Nitto Invos. But just like GeorginNePa said, he isnt spinning. Its def his tq that is hurting him

[fiveoh]

Uh your using a mail order tune with a cammed car? That's your problem. Get a real dyno tune by a good tuner.

[vic2186]

You should be easy 415-430 and 400tq at least with that cam and overlap..your cam is not that far from chariots cam put he has ported heads and such..

Redyno it with pat g when possible

[Steve GT]

Yes, it's a Livernois tune so it'll be locked. I have emailed Rick as he has worked with me very well in the past and I'd like to hear his thoughts on my torque numbers. In their defense, I have never discussed the torque numbers with them so I'll see what they have to say. They have done several cammed cars on their own dyno so the tune should be close. The shop who did my dyno seemed iffy at best so I'd like to get it redone before jumping to any conclusions. The low torque would explain the 60 foots though, so maybe it's at least a jumping off point.

[GeorgeInNePa]

My best run was as follows.

60 ft - 1.9971
330 ft - 5.4569
1/8 mile - 8.307 @ 93.28 mph
1000 ft - 10.5756 @ 100.99

That was on the stock tires. My best 60 foot of the night was 1.9625 on the DRs. Keep in mind it is a 1000' track so I don't have full 1/4 mile times and ETs. Dragtimes.com shows the DA at 2050 feet at the time of the best run. Earlier in the day, it was just under 3000 feet so it was a pretty hot day to say the least.

In air that was -200 to +200 my car ran to 1000' in 10.teens to 10.2xs with 1.7xs 60', remember all OEM engine parts.

You are either spinning them hard and not realizing it, or you are down bunches of power...

Your MPH at the 1/8 is higher by about 3.5...

[stryker g8gt]

Your Tq should be alot higher, but I will say I hate my Yank 3200, I had better 60' times with my stock converter. I have even let other people drive it in the 1/8 that are great on the track. It is real bitch to get locked even on a dyno tuning it. I am at 434/400 with a similar cam.

[familycaronROIDS!]

What track do you race at?? In the Spring I was getting 1.800 60ft BUT now in the summer I am getting 1.8+-1.9 60ft... Do to DA and heat and all that good stuff...

[irnwkrkev]

Somethings wrong, my best in the 1/8 is 8.39 @ 84.XXmph w/ a 2.05 60'. That's w/ 20" street radials. Your mph is WAY UP there for your times and you have a better 60' as well. Weird.

[wreckwriter]

I run 93-94 mph in the 1/8 too but my ET is 7.50-7.60 for that MPH.

[Steve GT]

I went through all my timeslips again and I think something was wrong with the 1/8th mile timer in the left hand lane. I stayed in the left hand lane most of the night, but I did make two passes in the right hand lane. Those passes show me trapping 86.57 mph and 86.72 mph. I realized something was up when I reviewed the slip for a slow car I ran. It shows it trapping 87.02 in the 1000' but 92.63 in the 1/8th :facepalm:

I talked to Livernois today and was told I need to put my car back on the dyno because the figure it showed was probably wrong due to the 3rd gear pull. I don't have the time to go back to the place that did it so I guess I won't get anything done on my car for awhile. I still think it being way down on power/torque would cause the problems I'm having but there is nothing I can do about it for the time being.

I do know one guy on the other site was fairly disappointed in his track times with this cam, so maybe it is just the wrong choice for the car.