2nd stock longblock into the 9s
11-08-2009, 11:56 AM
#1
Drifting
Thread Starter
2nd stock longblock into the 9s
and this time with a 6 speed!!!!!!!
Thought I would post in the FI section for those that don't wonder to the Perf Results section. I was hoping to scare Chris Stewart's auto conversion 9.7x, but that might be out of reach for where I want the car.
What a great time yesterday! That's what this is all about. I had a blast! My wife and friends even enjoyed it. They asked when we were going to do it again. Of course not sure when/if that will happen.
Big thanks to everyone that helped yesterday. I owe much of it to two guys. Chris Uzzel for helping me turn wrenches and getting this thing to the amazing car it is. Steve Williams (Frost) for setting me up with an amazing tune. Who'd a thought a stock longblock could do this??
This was my first time out with radials. I was also a little rusty as I only had 8 passes in 2009 coming into this event. My shifts were dead on all day. On the passes we logged, the shifts were within 8 rpm of our target. Took me a little time to figure out the launches though. It was pretty cool to bust it out in the last 5 minutes of the day. Gotta love the pressure!
Details
'03 Z06
A&A D1SC
100% stock longblock
Stock transmission (M12 6 speed)
Stock differential with both hardened output shafts
Stock gears
Stock rear suspension
Here's the slip and video.
Thought I would post in the FI section for those that don't wonder to the Perf Results section. I was hoping to scare Chris Stewart's auto conversion 9.7x, but that might be out of reach for where I want the car.
What a great time yesterday! That's what this is all about. I had a blast! My wife and friends even enjoyed it. They asked when we were going to do it again. Of course not sure when/if that will happen.
Big thanks to everyone that helped yesterday. I owe much of it to two guys. Chris Uzzel for helping me turn wrenches and getting this thing to the amazing car it is. Steve Williams (Frost) for setting me up with an amazing tune. Who'd a thought a stock longblock could do this??
This was my first time out with radials. I was also a little rusty as I only had 8 passes in 2009 coming into this event. My shifts were dead on all day. On the passes we logged, the shifts were within 8 rpm of our target. Took me a little time to figure out the launches though. It was pretty cool to bust it out in the last 5 minutes of the day. Gotta love the pressure!
Details
'03 Z06
A&A D1SC
100% stock longblock
Stock transmission (M12 6 speed)
Stock differential with both hardened output shafts
Stock gears
Stock rear suspension
Here's the slip and video.
11-08-2009, 04:43 PM
#9
Race Director
Wow!! Great run man!! 
11-08-2009, 04:46 PM
#10
Drifting
Thread Starter
Gears were the tough part. I was sooo tempted to toss some gears in it. I bet that's costing me .3 or more. I'm only crossing at apx 6k. It would help my 60' too. I just didn't want to mess with the street manners.
Last time I went to dyno it was in the upper 80's. 651/540.
On the track I have always run 100 octane and a crap load of meth. 93 on the street, but I don't lay into it.
11-08-2009, 05:01 PM
#11
Collections Hold
Dave that is absolutely fantastic. That is my goal, 9's with stock running gear. Not too many, at any power level, have been able to get into the 9's with the stick. Fine job indeed. You now own, with out a shadow of doubt, the stock long-block Z06 record. Chris still has the modified running gear (auto conversion) stock block record.
That launch looks great, nice and smooth. Could you elaborate? What tires? What RPM? What clutch action? and so on...
Robert
That launch looks great, nice and smooth. Could you elaborate? What tires? What RPM? What clutch action? and so on...
Robert
congrats Dave!
11-08-2009, 07:35 PM
#16
Drifting
Thread Starter
Dave that is absolutely fantastic. That is my goal, 9's with stock running gear. Not too many, at any power level, have been able to get into the 9's with the stick. Fine job indeed. You now own, with out a shadow of doubt, the stock long-block Z06 record. Chris still has the modified running gear (auto conversion) stock block record.
That launch looks great, nice and smooth. Could you elaborate? What tires? What RPM? What clutch action? and so on...
Robert
That launch looks great, nice and smooth. Could you elaborate? What tires? What RPM? What clutch action? and so on...
Robert
Robert, tires were Hoosier Drag Radials 255/50-16. Learned these tires like a LOT of air in them and a lot of RPMs. Ended up with 23#, but could probably go higher. Launch was north of 5k, but a very slow release of the clutch to prevent shock to the system.
The key is to feed throttle as the clutch starts to grab. You cannot let the RPMs drop below your max HP point.
Everyone has their own style, but I believe the clutch is a consumable if you are going to have big power. Let the clutch do it's thing and you will save a lot of broken parts. There are a lot of videos of my passes. Nothing looks violent at all. That's because I have a slow release of the clutch.
Pretty sure Robz has a similar approach. He cut some low 1.3 60', yet it still didn't look violent. He also uses a McLeod clutch.
McLeod rebuilds are $300 plus $125 for balancing. I'll take that over $3k+ for diffs/trans.
I'm pretty proud to have done it with a 6 speed, but have to admit - I get a little jealous when I hear Chris having to detune to run 10.00.
Pretty amazing what these stock blocks are capable of.Thanks. No turbo here though. A&A D1SC
Last edited by clemsondave; 11-08-2009 at 07:37 PM.
11-08-2009, 08:20 PM
#18
Safety Car
Congrats Dave and damn fine drivin. A nice reward getting your goal, that you've been planning all year and did it. Amazing that a stock motor LS6 can run into single digit race car territory with proper setup. Sets the bar pretty high!
I like that launch technique, you can see exactly what's happening in the video. Ride the clutch out from the start to the tree. When I realized that trick, I already switched to auto, but I do like the torque converter.
I like that launch technique, you can see exactly what's happening in the video. Ride the clutch out from the start to the tree. When I realized that trick, I already switched to auto, but I do like the torque converter.
11-09-2009, 07:55 AM
#19
Drifting
Wow, how many runs do you actually get out of a clutch?
I think I'd rather switch to an auto trans, rather than a "slow release" of a clutch. I just don't see how clutch can last very long at all with that technique.But hey, it worked for a 9 sec pass.
-
11-09-2009, 08:27 AM
#20
Drifting
Thread Starter
I pulled it out before the rental. It had about 30 passes on it. No bluing on the flywheel, zero dust and almost no wear on it.
If you want all out ET or bracket/index racing, I agree that auto is better. I just think the 6 speed is more fun and more of a challenge on the driver.
If you want all out ET or bracket/index racing, I agree that auto is better. I just think the 6 speed is more fun and more of a challenge on the driver.