98mysticZ

iTrader: (11)

here is a vid of me at a local track... what am i doing wrong?

m6 9inch 408 car 4klbs ... and only getting 1.8x 60's runnin 12.23 @116 on motor... dont have a nitrous pass but figured i need to get the motor runs down before i can do anything on bottle... but on bottle went 11.24@128..

http://www.qb2productions.com/videos...z/crandall.wmv

98mysticZ

iTrader: (11)

come on some one should be able to help... PLEASE

getusum

iTrader: (42)

Link doesn't work.....What all have you done to the suspension?.....Our cars are close.m6,408 and 3800lbs

1BADAIR

iTrader: (1)

vid doesn't work for me
what kind of dyno are your numbers from?
484rwhp shoulbd be like 124mph on spray you should be 135 or more

Funkster

iTrader: (97)

MPH is pretty low for the build.

Suspension mods?

Tires and launch technique?

98mysticZ

iTrader: (11)

strange coil overs up front.. full rear susp.. but on a prokit in the back with a stock shock... comming out about 4k slipping the clutch.. on a 335/37/17 hoosier drag radial.... link should work




http://www.qb2productions.com/videos...z/crandall.wmv

Nitroused383

iTrader: (10)

I would into the tune on the car. Where did it make peak power and what rpm are you shifting at? I would put a set of 15x10" wheels on it so you can launch at a higher rpm.

GIZMO

iTrader: (8)

Spinning in first and it looks like you don't hit fourth until about the mph stripe.

fastGBcamaro

iTrader: (10)

It does appear that you spin a little in first but it isnt too bad. I think your biggest issue is your race weight. You should be able to pull out a bunch of weight and your mph/ et will improve. Like some others have suggested getting a 15 inch rim and a tire with a bigger sidewall will allow you to launch the car much higher which should get your 60' time down. I might have missed it, but I didn't see what gears you were running in the rear?

TORCHD 02 TA

iTrader: (39)

You did spin at the line. Just by listening to the soundclip, it seems that you are shifting way to low. What is the peak HP on your dyno graph?

rpmauto

iTrader: (14)

my 402 runs very similar. I think i remember some of your build threads. I put down 470rwhp on motor. 620 on the jug, havent run the squeeze yet, but on motor this weekend at Arm drop live all passes i made were 11.7 @117 with a 1.6 60'. My car has done better on motor, but not much. Yes it is a low trap and et for a 4xx car, but i my car is heavy too. For me it came down to add more power, or cut weight, Tony Mamo is doing a set of heads and cam for me know. That is my answer. Your trap speed will be about the same, but if you get some 15" tires and dump at 6k you will def impove on et.

98mysticZ

iTrader: (11)

its got a 3.89 rear gear and its gone the best of 7.41 1/8th on motor sitting in current form.. just a diff track so i know its got alot more in it.. just dont really know where to start.. car makes 484/462

fastGBcamaro

iTrader: (10)

The gears are fine for a good street/ strip combo for N20. I think your biggest gains without weight reduction or more hp is going to come frome a bigger side wall tire/slick. Then you can leave a lot higher in your power band. There is no reason why you shouldn't be able to go 1.5-1.6 60' times with a 15x10.5 slick. That alone would net you high 11's NA and 10's on the bottle easily.

1BADAIR

iTrader: (1)

my var is that heavy too.
from the vid it looks like you spin then bog really bad

98mysticZ

iTrader: (11)

ok well less weight a actual slick and higher launch.. and i belive i am gonna move my torque arm mount up 1 hole.. pulled a 1.71 short time with it higher i cant get anything lower then a 1.76 right now.. ... and that was on the same tire..

Mikey 97Z M6

iTrader: (37)

Can you give us a better run down on your mods list? Suspension mods especially. You mentioned moving your torque arm down a hole, is it a madman unit or MWC unit? What's your LCA angle?

What rpm are you shifting at? If you're shifting too early it will have a dramatic effect on your mph and et's. With that kind of hp, even with a heavy car, I'd expect a higher trap speed.

What tire pressures have you tried? What elevation is the track at and what temp was it when you ran that day?

Mike

DanZ28

iTrader: (5)

You guys have some heavy cars..

This could be a big factor as well...

You spun then bogged big time off the line, what gears you have?

98mysticZ

iTrader: (11)

3.89 gears full umi rear susp with a torgue arm relocation bracket set on the lowest hole.. eibach prokit rear springs/stock decarbon shocks, strange coilovers up front. -2 degree pinion tires were about 18psi... shifting about 6200-400 dyno graph above

will have to pull the slip to figure out the d/a and hummidity and elevation..

1BADAIR

iTrader: (1)

is the -2 driveshaft angle or driveline angle?

99TransAmLS16Spd

iTrader: (8)

It looks like your hp flattens out between 6k-6.5k on the graph, that could be for a few reasons (intake, exhaust, etc). Maybe try shifting a little higher in the rpms to get more out of the gear, like 6,500rpm
Weight is killing you like the others have said as well. skinnies up front and 15's w/ the right tire will help your 60's and MPH