cammed LS2 GTO vs E85 Cobalt SS/TC *vid*
08-20-2012, 03:48 PM
#41
I think you guys are getting too wrapped up in the Cobalts trap. Watch the video of his pass, which is just shy of 115mph. At the track, he can't build any boost, and the launch is slowwww (60' was a 2.2). From a roll, it is much stronger, and even on the stock turbo brakeboosting makes a nice difference.
08-20-2012, 04:22 PM
#43
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I think you guys are getting too wrapped up in the Cobalts trap. Watch the video of his pass, which is just shy of 115mph. At the track, he can't build any boost, and the launch is slowwww (60' was a 2.2). From a roll, it is much stronger, and even on the stock turbo brakeboosting makes a nice difference.
Also, the Cobalt didn't come around the GTO til after 120mph, which is higher than what both trap. Race ended around 140.
GTO is heading to the track soon, maybe this week.
This is the same Cobalt, but on street tires, vs a 45x rwhp GTO, which walked away from the cam only GTO in the original video.
Also, the Cobalt didn't come around the GTO til after 120mph, which is higher than what both trap. Race ended around 140.
GTO is heading to the track soon, maybe this week.
This is the same Cobalt, but on street tires, vs a 45x rwhp GTO, which walked away from the cam only GTO in the original video.
Strong running 'balt there.
08-20-2012, 04:25 PM
#44
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08-20-2012, 06:13 PM
#47
What I figured......which is why I get beat up at the track in the slobalt with mid 13's but 106/7 traps are fun for streets where most unplanned runs are from a roll. (106 was before current tune)
Last edited by hugger1975; 08-20-2012 at 06:59 PM.
08-20-2012, 08:00 PM
#51
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08-20-2012, 08:58 PM
#52
Hypothetical Question for the balt guys. What are your option for building boost at the line with a manual? The reason i ask is in my Cummins i have a twin disk valair clutch. With it i can hold at the line, rev to 2,000 rpm or so a.d start to engage the clutch while not moving. This allows me to build around 15psi before i take off, and it hits 45+ psi instantly when i let the clutch out. Im sure its been thought of just curious, and im sure traction may have somethin to do with it.
08-20-2012, 09:08 PM
#53
Cammed 02, I'm not sure why you think my comment was directed at you, your post never mentioned trap speed.
First you have to try and determine whether or not both trap speeds were attained in similar conditions. My trap speed has varied up to 5 mph just due to the DA.
Second, a car that spins badly, like a lot of FWD cars do, will trap lower than it is capable of. The trap will be high for the ET, but low compared to what it would do with decent traction.
Third, some cars are set up differently and will run differently from a dig and a roll. My G8 will spray instantly from a roll, but from a dig the nitrous doesn't some on until I hit 20 mph (3000 rpm in 1st gear), which loses me some acceleration early on and makes the car trap a little lower. GTP's also come to mind. They run great at the track, putting up decent trap speeds, but run one from a roll and watch it fall on it's face when it shifts into 3rd gear.
Just an example from my experience, when my Z28 was cam only, trapping 117, I raced a Mustang that was a consistent 120 mph car. When we raced from 20 mph I pulled him every time.
Not trying to come across as a dick, if that's what it seemed, but some people think that a higher trapping car will always pull away from a lower trapping car from a roll, but that's not always the case. A lot of times it does hold true, but not always.
Second, a car that spins badly, like a lot of FWD cars do, will trap lower than it is capable of. The trap will be high for the ET, but low compared to what it would do with decent traction.
Third, some cars are set up differently and will run differently from a dig and a roll. My G8 will spray instantly from a roll, but from a dig the nitrous doesn't some on until I hit 20 mph (3000 rpm in 1st gear), which loses me some acceleration early on and makes the car trap a little lower. GTP's also come to mind. They run great at the track, putting up decent trap speeds, but run one from a roll and watch it fall on it's face when it shifts into 3rd gear.
Just an example from my experience, when my Z28 was cam only, trapping 117, I raced a Mustang that was a consistent 120 mph car. When we raced from 20 mph I pulled him every time.
Not trying to come across as a dick, if that's what it seemed, but some people think that a higher trapping car will always pull away from a lower trapping car from a roll, but that's not always the case. A lot of times it does hold true, but not always.
Last edited by ScreaminRedZ; 08-20-2012 at 09:21 PM.
08-20-2012, 09:29 PM
#54
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Hypothetical Question for the balt guys. What are your option for building boost at the line with a manual? The reason i ask is in my Cummins i have a twin disk valair clutch. With it i can hold at the line, rev to 2,000 rpm or so a.d start to engage the clutch while not moving. This allows me to build around 15psi before i take off, and it hits 45+ psi instantly when i let the clutch out. Im sure its been thought of just curious, and im sure traction may have somethin to do with it.
08-20-2012, 09:59 PM
#55
Damn, you change out the brembos?
I have 235'/18's on
Hypothetical Question for the balt guys. What are your option for building boost at the line with a manual? The reason i ask is in my Cummins i have a twin disk valair clutch. With it i can hold at the line, rev to 2,000 rpm or so a.d start to engage the clutch while not moving. This allows me to build around 15psi before i take off, and it hits 45+ psi instantly when i let the clutch out. Im sure its been thought of just curious, and im sure traction may have somethin to do with it.
Cammed 02, I'm not sure why you think my comment was directed at you, your post never mentioned trap speed.
First you have to try and determine whether or not both trap speeds were attained in similar conditions. My trap speed has varied up to 5 mph just due to the DA.
Second, a car that spins badly, like a lot of FWD cars do, will trap lower than it is capable of. The trap will be high for the ET, but low compared to what it would do with decent traction.
Third, some cars are set up differently and will run differently from a dig and a roll. My G8 will spray instantly from a roll, but from a dig the nitrous doesn't some on until I hit 20 mph (3000 rpm in 1st gear), which loses me some acceleration early on and makes the car trap a little lower. GTP's also come to mind. They run great at the track, putting up decent trap speeds, but run one from a roll and watch it fall on it's face when it shifts into 3rd gear.
Just an example from my experience, when my Z28 was cam only, trapping 117, I raced a Mustang that was a consistent 120 mph car. When we raced from 20 mph I pulled him every time.
Not trying to come across as a dick, if that's what it seemed, but some people think that a higher trapping car will always pull away from a lower trapping car from a roll, but that's not always the case. A lot of times it does hold true, but not always.
First you have to try and determine whether or not both trap speeds were attained in similar conditions. My trap speed has varied up to 5 mph just due to the DA.
Second, a car that spins badly, like a lot of FWD cars do, will trap lower than it is capable of. The trap will be high for the ET, but low compared to what it would do with decent traction.
Third, some cars are set up differently and will run differently from a dig and a roll. My G8 will spray instantly from a roll, but from a dig the nitrous doesn't some on until I hit 20 mph (3000 rpm in 1st gear), which loses me some acceleration early on and makes the car trap a little lower. GTP's also come to mind. They run great at the track, putting up decent trap speeds, but run one from a roll and watch it fall on it's face when it shifts into 3rd gear.
Just an example from my experience, when my Z28 was cam only, trapping 117, I raced a Mustang that was a consistent 120 mph car. When we raced from 20 mph I pulled him every time.
Not trying to come across as a dick, if that's what it seemed, but some people think that a higher trapping car will always pull away from a lower trapping car from a roll, but that's not always the case. A lot of times it does hold true, but not always.
my 1/8 ET is no way represents what happens the back half.
good stuff ^
i know for a fact my trap has more in it which is why i do pull away from higher trapping cars.
same with the hugger on my last outing. 117 was high for the 12.3 i was running spinnin like an ******* at the indy track.
08-20-2012, 10:43 PM
#58
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Yep 275/40R17's lol spinning is not winning! Lol
http://balt2nv.smugmug.com/Cars/Balt...4586431_4Vm3KQ
