Stock c6z06 and c6zr1’s mph in the half mile.
 

1.5 Mile Magnum is Dead unfortunately.

I don't follow 1/2mi stuff so much, but 153-155 for a C7Z seems a little fast. You'd think their aero and gearing would hurt badly in a 1/2mi run.

This.

Not sure on stock C6Z's. Most HCIE cars are 160 or so.

I ran 154mph in 1/2mi last October. 08 Z06, makes 550whp

I think my best 1/2 mi. time at the Texas mile was 146, but a better driver can likely hit 148--151 (stock C6 ZR1).

Stock and modified 1/2 mile times are listed in a sticky thread at the top of this forum for ZR1's. When bone stock I ran 154.0 1/2 split and 182.6 mile at the Texas Mile.

My stock zr1 plus headers and cold air, no tune did 156mph in the half. Did 170mph after heads/cam/porting/pulleys/etc.

My C6Z stock ran the 1/2 mile at Gila Bend in the low 150s. (800'elev.)

Now with HCI and 591/525 at Mojave I did 160/187/201.2 in the 1/2, 1, and 1 1/2 mile. DA was 4600' on those runs with tail wind.

The 196 stock was with a very strong tail wind. Without helping wind stock in the 1 mile was 173. I'd estimate stock in the Magnum without wind would have been around 188.

The notice we got from MKM that put on the Magnum was that the FAA sent a letter to the Mojave airport strongly discouraging shutdown of the runway to aircraft. The airport probably receives federal funding, so the airport no longer would host events. The Magnum did have a motorcycle fatality in each of the last two events held.

At Rantoul, IL a few years ago I ran 160-161 in my stock ZR1 with an intake and cat-back. I think the ECU balances out fuel trims and kills almost any gains of the intake, but the exhaust is probably worth about 10. I also have an expansion tank so another gallon of coolant, and I cooled down between runs so my IAT2's never got above 110. Weather was nice, maybe 70 degrees. I also ran a completely stock 1LZ C7Z06 auto who ran consistent 155-156 speeds and hot lapped, although he cooled down before running me. At this track on that day I think a truly and completely stock C6ZR1 would run maybe 158. Most races were done from a roll between 40-60mph and I did some digs which were well before the first cones. All runs never varied more than 1mph even with a 20 mph difference in start speed.

My stock 2011 Z07 did 149 at the Houston 1/2 Mile, 169 at the Texas Mile, both are run from a dig. I now have modified it and plan to run Shift S3CTOR in August in Indiana (1/2 Mile event). My car has consistently been doing 144-145 in Pocono (1/3 Mile) Roll Racing since the mods (553/501). I expect it to be 153-154 at the 1/2 Mile. When I ran the Texas Mile most stock C7Z06's were running 147-149 1/2 mile speeds. I also recall seeing a few posts by C7 Z06's running half miles in the high 140's.

I ran against a stock C7Z on 4 passes in the half. He hit 148mph on all 4.

Surprising. I'm assuming the aero and weight are holding the C7Z back compared to the C6Z?

Mainly the aero and heat soak. At the Texas mile when the C7Z's first showed up almost all of them has their wicker bills high and ran low 160's in the mile. When they lowered or removed them they would run 8-10 MPH faster. The C7ZR1 that ran this spring ran 183 with the high wing and 190 without.

Aero drag hurts high speed. CD of C6Z is ~0.33 and C7Z something like 0.38 for Stage 3. Factory top speed rating of C6Z was 198. For C7Z with Stage 1, 2 and 3 Aero was 196, 190, 186.