[Z06] 120.95 Trap Speed!
Thread Starter
Safety Car
Joined: Aug 1999
Posts: 4,353
Likes: 252
From: Minnesota
120.95 Trap Speed!
My drag racing ability must su%k because with a 120.95 trap I only managed a 12.3 et. :crazy: :crazy: This was last weekend at Route 66 in Joliet Ill. My 60' was a 2.05 on the stock tires all set at 30 psi. 1/8 mile was 8.121 @ 93.16. I was real happy with the trap. I shifted as quick as I could from 1 to 2. No power shift as I would have spun. I did power shift 2 to 3 at 6500 rpms and from 3 to 4 at 6200 rpms. I probably should have taken her to 6500 on the 3 to 4 shift but I got antsy. ;)
My DRM head and cam car is using stock valves, and I do not have underdrive pulleys, nor do I have a ported tb. The airbridge is also still stock. The main cats are also still on the car. If I put some slicks on it and could do a 1.7 or 1.6 60' I think this is a mid 11 at 125 car. Maybe next year.
My DRM head and cam car is using stock valves, and I do not have underdrive pulleys, nor do I have a ported tb. The airbridge is also still stock. The main cats are also still on the car. If I put some slicks on it and could do a 1.7 or 1.6 60' I think this is a mid 11 at 125 car. Maybe next year.
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Re: 120.95 Trap Speed! (Rippied Z06)
Ron,
Excellent runs. Great trap speed that reflects your big rwhp.
Once you hit a certain proficiency in shifting (which you abviously have), reducing the ET further is all about launch and the first 330', which includes the shift to 2d. You were running on a very fast track, still well prepped from the recent events. But it appears their launch area was not as sticky as it might have been, probably reflecting traffic by a lot of cars running street tires.
Short shifting to 4th probably cost you 0.05 sec or so.
I'm figuring on my car, breaking under 12.00 will take a 1.75 60', a good hook on the shift to 2d and staying off the limiter thereafter. That would include a 330' - 1320' of about 6.95 sec.
With DR and a line-lock and a little practice, you'd be in the 11.8x Then, of course, they'll call you to the tower for your warning to stay north of 12.00.
That would be a sweet warning to get.
Ranger
Excellent runs. Great trap speed that reflects your big rwhp.
Once you hit a certain proficiency in shifting (which you abviously have), reducing the ET further is all about launch and the first 330', which includes the shift to 2d. You were running on a very fast track, still well prepped from the recent events. But it appears their launch area was not as sticky as it might have been, probably reflecting traffic by a lot of cars running street tires.
Short shifting to 4th probably cost you 0.05 sec or so.
I'm figuring on my car, breaking under 12.00 will take a 1.75 60', a good hook on the shift to 2d and staying off the limiter thereafter. That would include a 330' - 1320' of about 6.95 sec.
With DR and a line-lock and a little practice, you'd be in the 11.8x Then, of course, they'll call you to the tower for your warning to stay north of 12.00.
That would be a sweet warning to get.
Ranger
Melting Slicks
Joined: Sep 1999
Posts: 3,292
Likes: 0
From: Round Rock, Texas Texas
Re: 120.95 Trap Speed! (Rippied Z06)
My drag racing ability must su%k because with a 120.95 trap I only managed a 12.3 et. :crazy: :crazy:
I feel your pain!
My trap speed is 115.7 with a 2.0 60ft and an et of 12.6.
I'm granny shifting, but that all ends this Friday!
I'm looking into a set of BFG DR's, and I'm going to powershift the hell out of my stock clutch (32k).
I'll let you know how I fare.
Melting Slicks
Joined: Mar 2001
Posts: 2,423
Likes: 0
From: western colorado colorado
Re: 120.95 Trap Speed! (Rippied Z06)
Hey looking good.....Did you suffer any wheel hop? How well was the track surface, sprayed good?I have noticed over the years sticky tires will really help your et but the mph will stay about the same...Keep your eyes open for those mopar boys :yesnod:
Thread Starter
Safety Car
Joined: Aug 1999
Posts: 4,353
Likes: 252
From: Minnesota
Re: 120.95 Trap Speed! (dbvettez06)
I tried dumping the clutch at 1800 and wheel hop city resulted. On my 120.95 run, I held the rpms at about 1400 and let the clutch out slowly to avoid spin. It worked pretty well. I didn't spin, but my 60' wasn't good either.
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Re: 120.95 Trap Speed! (Rippied Z06)
Ron,
Here's an alternative. Hold the rpm at 2200 and release the clutch fully over the first 2'-10' of movement. Go to WOT only after the tires are hooked.
On successive runs add 200 rpm. You'll find the best launch rpm for that track on that day.
On a sticky track I am launching at 2700-2900 rpm with 60' in low-mid 1.8s.
I'm usually running the rears at 23-24 psi and the fronts at 42 psi.
A low-mid 1.8Xs 60' on your car would put it in the 11.9x on stock tires.
Ranger
Here's an alternative. Hold the rpm at 2200 and release the clutch fully over the first 2'-10' of movement. Go to WOT only after the tires are hooked.
On successive runs add 200 rpm. You'll find the best launch rpm for that track on that day.
On a sticky track I am launching at 2700-2900 rpm with 60' in low-mid 1.8s.
I'm usually running the rears at 23-24 psi and the fronts at 42 psi.
A low-mid 1.8Xs 60' on your car would put it in the 11.9x on stock tires.
Ranger
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Thread Starter
Safety Car
Joined: Aug 1999
Posts: 4,353
Likes: 252
From: Minnesota
Re: 120.95 Trap Speed! (Ranger)
Thanks guys! Ranger, if I tried to launch like you suggest, my pos stock clutch with 17,000 miles on it would die a sudden death. When the clutch gets replaced, I'll give it a try. :cheers: