10.8 @ 128 all motor T56

[SH4DY]

I know there are some Z's putting up some crazy fast times but I wanted to share my results from my first drag racing event with the Z this weekend at Street Car Takeover at Virginia Motorsports Car. 

The build list is pretty extensive:

but the short of it is: LS1 based 383 w/ ITB's makes ~465rwhp, GTO T56, WHP CV axles and stubs, factory long nose R200 with Mfactory Helical LSD, Hoosier DR2 245/45R17, CX racing coilovers.

First pass (ever in this car) it went 11.6 @ 124. I launched around 3k slipping the clutch and shifted pretty easily. The car had also gotten really hot in the staging lanes and wasn't super happy. Let the car cool down for a good hour or so and got back in the lanes. Second pass netted a 11.4 @ 126 with no changes to the car. Actually slipped the clutch harder and it slowed down the to 60' (1.9 vs 1.8). Loaded the car up after that to look over logs (forgot my laptop) and get it ready for the race the next day.

Logs showed it was a little rich (ethanol content was slightly down) and videos showed the car squatting a lot on the launch and shifts. I added a full turn of preload to the rear springs and went from 10 to 3 click from full hard on the dampening. Left the fronts at 16 out of 32 on the dampening.

Only pass I got to make on race day was during eliminations and I brought a spit ball to a gun fight - I got gaptized by an AWD k-swapped civic. Anyway, I couldn't be happier with the way the car ran. I launched around 4k barely slipping the clutch and netted the following:

 

A couple pictures of the car:

 

(Yes - I hand laid the carbon fiber for the stack and the air boxes)

 

Not sure where to go with the car from here. I think the 10.8 was one of those moments when all the stars aligned - I'd be lucky to get it to 60' like that ever again. It has a weld in 4 point roll bar right now but if I put any kind of power adder on there, she'll need more cage for sure. She weighed in at 2,935 lbs with me in it which is ~200lbs heavier than I was expecting (I'm 170lbs), but makes sense considering the gauge metal I used when replacing the floors/ tunnel, adding the tubular frame rails, roll bar, etc. Don't really want to hack it up at this point though. 

This is the last time I'll get to race it this year but the wheels are definitely turning about what to do this off season.

 

[weedburner]

Nice project!

 

60' is mostly about high launch rpm and then getting your clutch to slip just right. Hit and miss trying to do that with your feet, much more consistent and far less wear/tear on the clutch with a 2-step and a clutch hit controller.

 

Grant