Can't improve my 60ft..... why?

[209camaross]

A year ago I went to the track and my car did a 12.1 at 116 mph and my 60ft was 1.8... my car was full bolt ons, cam, 3200 stall and 17 inch drag radials in the rear... since then I've added ported and milled heads, e85, 17 inch skinnies, 3.91 gears and trailing arms.. my car did 11.6 at 121 mph with the same 60ft 1.8... forsure I thought the skinnies and the gears were going to help out but it didnt.. my car is also on 1 inch lowering springs, don't know if that's affecting it

[QUICRNU]

Just a few quick questions, I'm sure others with more experience may have more relevant but.

Are you pulling ABS fuses 40 and 43?
Have you marked the rims in relation to tires to see if they are spinning inside the tire?


I assume you did several passes launching from different RPMs until you found max RPM launch?
A lot of other variables in drag racing, DA etc... just curious how the days compared.

Do you datalog runs?



I have heard some scenarios where the bigger gears in the Auto run a Slower ET with no different mods. Saw a car on here that way..... the 3.45 did .2 better ET than a 3.91 in the same car... but I am not a pro here.. just some food for thought.

Curious what PSJ or Rhino etc might say... or any of the other dialed in drag racers here.

Good Luck man, still sounds fun either way!

[209camaross]

Originally Posted by QUICRNU

Just a few quick questions, I'm sure others with more experience may have more relevant but.

Are you pulling ABS fuses 40 and 43?
Have you marked the rims in relation to tires to see if they are spinning inside the tire?


I assume you did several passes launching from different RPMs until you found max RPM launch?
A lot of other variables in drag racing, DA etc... just curious how the days compared.

Do you datalog runs?



I have heard some scenarios where the bigger gears in the Auto run a Slower ET with no different mods. Saw a car on here that way..... the 3.45 did .2 better ET than a 3.91 in the same car... but I am not a pro here.. just some food for thought.

Curious what PSJ or Rhino etc might say... or any of the other dialed in drag racers here.

Good Luck man, still sounds fun either way!

What are abs fuses for or what do they do?
No I have not marked the tires but that sounds like a good idea .
Launching at idle has been best for my car I've tired laughing at different rpms..
No I haven't done any datalog because I don't know how...

[1709]

you need to get a good tuner to come to the track and data log your runs, you most likely have no timing on the bottom end. mine were 1.6s to 1.7s and after a track tune they went down to low 1.4s. you have to run high octane fuel.

[209camaross]

Originally Posted by 1709

you need to get a good tuner to come to the track and data log your runs, you most likely have no timing on the bottom end. mine were 1.6s to 1.7s and after a track tune they went down to low 1.4s. you have to run high octane fuel.

The closest track to me is 2 hours away and I don't think my local tuner would want to go unless I pay him a fortune lol... he tuned my car the best he could for the 1/4 mile... my shift points are set at 6900 rpms and I'm running e85

[1709]

I don`t know what your cam specs are, 6900rpm sounds high to me. what does your dyno sheet say. I would say that at 6900rpm your QT will be way down. are you an auto or standard trans?

[QUICRNU]

Fuses are Here
http://www.camaro5.com/forums/showth...=395979&page=3

Makes sure all the nannies are disabled and cannot activate brakes. Worth thinking about at your own risk.

Wheel marking.
Mine only moved about a 1/4 inch in 8 passes cutting 1.5x 60 ft each time... but every tire wheel and install could be different... if they used alot of grease or not? It is worth verifying.


I would also wonder about the 6900 rpm shifts ... I am FI so I shift at 6700 limiter set at 6800. Probably just me trying to be a little bit cautious.


Im not sure if it is factory but I have seen the spark table have a timing correction for off idle hard acceleration. So I would be curious to see what your spark advance does directly off the line......

Do you have any type of tuner/scanner? I use HPTuners, and I enjoy logging and reviewing what the car is doing all through each run. If what you have matches what the tuner has, normally they would be willing to use your log to adjust your tune without them having to be there.

[209camaross]

Originally Posted by 1709

I don`t know what your cam specs are, 6900rpm sounds high to me. what does your dyno sheet say. I would say that at 6900rpm your QT will be way down. are you an auto or standard trans?

I'm auto 6l80e with a 3200 yank.. my car made 500 rwhp with cam, heads, bolt ons and e85

[209camaross]

Originally Posted by QUICRNU

Fuses are Here
http://www.camaro5.com/forums/showth...=395979&page=3

Makes sure all the nannies are disabled and cannot activate brakes. Worth thinking about at your own risk.

Wheel marking.
Mine only moved about a 1/4 inch in 8 passes cutting 1.5x 60 ft each time... but every tire wheel and install could be different... if they used alot of grease or not? It is worth verifying.


I would also wonder about the 6900 rpm shifts ... I am FI so I shift at 6700 limiter set at 6800. Probably just me trying to be a little bit cautious.


Im not sure if it is factory but I have seen the spark table have a timing correction for off idle hard acceleration. So I would be curious to see what your spark advance does directly off the line......

Do you have any type of tuner/scanner? I use HPTuners, and I enjoy logging and reviewing what the car is doing all through each run. If what you have matches what the tuner has, normally they would be willing to use your log to adjust your tune without them having to be there.

My cam is a ss3 vvt from GPI and the heads are also from them... when my tuner put the shift points at 6900 I ask Aaron with GPI and he said it was ok .... as for scanner I don't have one but been interested in getting one

[1709]

Ok I thought you had more power, you will need more power to get a better 60 foot. these are heavy cars and it takes a lot of power to get a good 60 foot I have 785rwhp to get 1.4s 60 foots.

[QUICRNU]

586 RWHp 520rwtq with the PD Blower... 2800 stall stock gears 1.51 60 ft.

Blower makes a lot of torque early.

Yea, I wasn't saying the 6900 was wrong. Trust what Aaron says 100% of the time over me!

Seems it should have improved at least a little since you added some power and lowered sprung weight. Im not NA though... so I will bow out of this hunt.

[209camaross]

Originally Posted by QUICRNU

586 RWHp 520rwtq with the PD Blower... 2800 stall stock gears 1.51 60 ft.

Blower makes a lot of torque early.

Yea, I wasn't saying the 6900 was wrong. Trust what Aaron says 100% of the time over me!

Seems it should have improved at least a little since you added some power and lowered sprung weight. Im not NA though... so I will bow out of this hunt.

Yea I just been trying to reach where prostock John and nalide92 are at... they run 10s NA and they're 60ft is 1.4 or 1.5 we pretty much got the same setup except they both got drag suspensions and I have lowering springs

[QUICRNU]

Originally Posted by 209camaross

Yea I just been trying to reach where prostock John and nalide92 are at... they run 10s NA and they're 60ft is 1.4 or 1.5 we pretty much got the same setup except they both got drag suspensions and I have lowering springs

I would argue, at the level of track performance those guys have, getting datalogs for adjustments would be well worth the money. You might try to mirror what your tuner uses to simplify things.

[Pro Stock John]

-What air box?
-Did you log the pass?
-Did you idle the car long time before you made a pass, what were the coolant temps?
-What cam, what shift points, what converter lock up?