Drag Racing

[HiTechRV]

What kind of setups are we going to see? This car has real potential as a weekend drag racer. I'm wondering if some drag radials or slicks will improve the 0-60 and ET's by a few tenths right off over the stock tires.

I think the launch control may make drag shocks and such unnecessary, but it will be interesting too see if that is true. I'm wondering if there will be tunes to tweak launch control in addition to the standard stuff like torque management.

Tiny front tires should be really easy with the 5 lug design. Anyone know which models will fit or how to xref to existing 5 lug cars? The weight savings should be significant though at least these will not be the heavy runflats with all their rotating mass.

Would a higer stall speed converter help on a auto? Might need a cam to go with it to see any gains there.

On an Auto I could see the steeped manual diff or gear as an obvious swap, along with the rubber to back it up.

I'm thinking these cars easily have the potential to get into the 10's or better since the wheel and tire options are there day one.

Other ideas on drag setups for a manual or auto V?

[The Tony Show]

Tiny front wheels will be tough, as brake clearance will be an issue- I doubt there's many "off the shelf" wheels that are mega narrow, yet still tall enough to clear the calipers.

Drag slicks will still help a bunch, since there's going to be somewhere around 8 ( )different thresholds for the PTM, including disabled. For street use I'll always have it on, but at the strip with some stickies on the back you could use all the available torque.

I completely agree that we're going to have a ton of potential right out of the box thanks to the MRC and 5 lug wheels. You'll see some guys going down the 1/4 a lot faster than stock within months of the car coming out, if not sooner.

[Katshot]

My guess would be the two biggest gains would be seen with drag radials (slicks) and reducing weight where possible. I just can't see doing much else to improve your ET since those improvements would surely have a negative impact on the car as a daily-driver.

[HiTechRV]

I agree the sticky tires and or wider tires will be the first step. I don't think the steeper diff gears would be much penalty for a daily driver except in MPG (no big issue for someone who drives low miles). Maybe you top out at 150 instead of 180 - just not an issue for daily driving but it gives decent potential ET improvement. Hole shot too.

I could see 1.6s hole shots with slicks.

do they make the little front drag wheels offset to the outside instead of inside? Then standard ones of that type might work. I'd think with a narrow tire the "wrong" offset might not be so bad.

[NormV]

With all the globalization and parts shareing I'd would not waste time reinventing the "wheel" as the V wheel is similar to the Aussie G8. Those guys are as much gear heads as us!

I think the G8 is already on the road there.

Norm

[Katshot]

Originally Posted by HiTechRV

I agree the sticky tires and or wider tires will be the first step. I don't think the steeper diff gears would be much penalty for a daily driver except in MPG (no big issue for someone who drives low miles). Maybe you top out at 150 instead of 180 - just not an issue for daily driving but it gives decent potential ET improvement. Hole shot too.

I could see 1.6s hole shots with slicks.

do they make the little front drag wheels offset to the outside instead of inside? Then standard ones of that type might work. I'd think with a narrow tire the "wrong" offset might not be so bad.

Isn't it going to have 3.73 gears? I'd think that with 550lb/ft of torque (bone stock) you probably wouldn't be needing shorter gears. To be honest, I wouldn't be surprised to find that this puppy will still have traction issues even with the widest/stickiest rubber you can get under it. And/or all that torque being harnessed via optimal traction causing driveline components to damn near disintegrate. Face it, even in totally stock configuration, that's a whole lot of twist to handle.

[HiTechRV]

Yeah the Aussies have the Commodore VE which is the G8 GT. Tom Stephens team built a little more margin into the entire driveline on the new V so it just might hold up to some slicks. The auto has a taller final than the manual (which has the 3.73 I think). First thing is first - the widest stickiest tires that will fit in back. If it cannot incinerate them, then find a way to exert some more torque (like steeper gears, a small shot...etc).

I bet initial attempts will be in the 12's but get to 11's very shortly after.

[Katshot]

By "small shot", I'll assume you mean nitrous. Not gonna help you on the launch since it's not in use at that point.

[NormV]

Yeah, "bottles are for babies" anyways!


Norm

Originally Posted by Katshot

By "small shot", I'll assume you mean nitrous. Not gonna help you on the launch since it's not in use at that point.

[TheRooster]

We need to get that crank pulley, CAI and tune sorted out quickly. Everything else from the LSX should bolt right up. I wonder what these heads casting will be.

[StealthV]

The spare tire from a '08+ CTS may work on the front of V2 if it'll clear the caliper. The tire is a T135/70R18.

And another little goodie from the '08 CTS - It's the same 5x120-mm bolt pattern as BMW, F-body and Corvette wheels. Will V2 be the same? My guess is yes.

[StealthV]

Originally Posted by TheRooster

I wonder what these heads casting will be.

[font=GMSans-Regular][size=2]

The LSA heads are LS9 heads (based off the L92) without the titanium intake valves.

Looks like 560 hp to me.

Side note - 6L90 gets 3:23:1 rear; TR6060 gets the 3:73:1.

[StealthV]

Seems like four years ago all over again.

TR6060...



6L90...

[StealthV]

Douple post.

[StealthV]

Using the above torque curve estimate, 175 lb driver, 70 degrees, 29.8 in Hg and crunching the numbers...

Stick 0.5 seconds between shifts

0-60 mph: 4.54 Seconds
0-100 mph: 8.76 Seconds
60 ft: 2.06 @ 35.17
330 ft: 5.42 @ 74.66
1/8 mile: 8.10 @ 94.25 (96.44 actual)
1000 ft: 10.36 @ 109.49
1/4 mile: 12.24 @ 120.88 (122.05 actual)
Max Accel: 0.694 G

Stick 0.2 seconds between shifts

0-60 mph: 4.23 Seconds
0-100 mph: 8.13 Seconds
60 ft: 2.06 @ 35.17
330 ft: 5.31 @ 75.05
1/8 mile: 7.87 @ 97.99 (100.06 actual)
1000 ft: 10.04 @ 114.14
1/4 mile: 11.86 @ 124.71 (125.82 actual)
Max Accel: 0.694 G

Slushbox 0.5 seconds between shifts

0-60 mph: 4.48 Seconds
0-100 mph: 8.84 Seconds
60 ft: 2.02 @ 35.58
330 ft: 5.51 @ 69.31
1/8 mile: 8.21 @ 94.50 (96.75 actual)
1000 ft: 10.47 @ 109.45
1/4 mile: 12.35 @ 120.82 (121.99 actual)
Max Accel: 0.724 G

Slushbox Tweaked TCM with 0.2 second shifts

0-60 mph: 4.17 Seconds
0-100 mph: 8.21 Seconds
60 ft: 2.02 @ 35.58
330 ft: 5.34 @ 74.22
1/8 mile: 7.91 @ 97.63 (99.71 actual)
1000 ft: 10.10 @ 113.71
1/4 mile: 11.92 @ 124.30 (125.40 actual)
Max Accel: 0.724 G

Slushbox Tweaked TCM with 0.2 second shifts and 3.73 rear gear...Shifts into 5th @ 1000'

0-60 mph: 4.40 Seconds
0-100 mph: 8.40 Seconds
60 ft: 2.02 @ 32.97
330 ft: 5.37 @ 75.22
1/8 mile: 7.94 @ 96.29 (98.27 actual)
1000 ft: 10.11 @ 115.23
1/4 mile: 11.94 @ 123.08 (124.08 actual)
Max Accel: 0.743 G