Why did my Z06 dyno so low? Lots of mods, low numbers
#121
Originally Posted by Spinmonster
I don't mean any disrespect sir but that cam has an intake closing point of 79 degrees unless you have some advance built into it. That is 7.4:1 dynamic compression. You need to boost a full point to get to 8.4 static for pump gas and I would go even higher. So you left at least 15rwhp from the compression alone on the table and far more torque.
I think you didn't boost the CR because that cam wouldn't fit and you didn't want to notch the pistons. As for getting 430 to the wheels with that cam on other cars, I could get 430 with that motor stock and a LG cam, headers, and UD everytime. For the record, I got 441 to the wheels with a 224/230 xer cam off the shelf from comp cams in essentially the same motor you put this monster in. My HP peaked around there too so you have something very wrong if your dyno sheet is showing a peak at 6400-6500 with that cam.
I think you didn't boost the CR because that cam wouldn't fit and you didn't want to notch the pistons. As for getting 430 to the wheels with that cam on other cars, I could get 430 with that motor stock and a LG cam, headers, and UD everytime. For the record, I got 441 to the wheels with a 224/230 xer cam off the shelf from comp cams in essentially the same motor you put this monster in. My HP peaked around there too so you have something very wrong if your dyno sheet is showing a peak at 6400-6500 with that cam.
Chuck
#122
Originally Posted by Shawn MacAnanny
We couldnt check with LS1edit so no one knows if we are or not.
And honestly how can a 19 year old be paying for a Z06 and hotrodding it himself. Lotto winner is only way I see that being possible.
Really amazed this car is even still at the same shop...
#124
I dunno what color the R6 is. It's a 'friend of a friends' bike who was talking crap about my car. He's backed down now though.
The car did get run at the track by my mechanic. It ran a best of 11.80@120 with a 2.0 60ft on drag radials. The other runs he missed a gear in, and he just couldnt seem to get it to hook up. He did fix a few things and port the TB. We didnt re dyno it but chuck did send us a new tune which seems to have more low end power.
We also found the steering problem which i am taking up there to get it fixed tonight. He installed the steering shaft in the wrong position which is causing the sensor to steer the car for no reason. I also scanned the codes through the DIC. Here is what i came up with. The new tune was uploaded on Friday, so the codes would have been reset then right? I didnt check to see which ones were history and which were current but here they are.
P1518 PCM to TAC Module Serial Data Circuit
C1221 LF Wheel Speed Sensor Input Signal is 0
C1222 RF Wheel Speed Sensor Input Signal is 0
C1241 Magna Steer Circuit Malfunction
C1248
C1278 TCS Temporarily Inhibited By PCM
C1287 Steering Sensor Rate Malfunction
C1288
U1000
B0502 RH DRL Relay Circuit
B0507 LH DRL Relay Circuit
B2482 Backup Lamp Relay Circuit
B2252 Key Cylinder Switch Fault
B2282 Battery #1 Fault
B2284 Battery #2 Fault
U1064 Loss of Communications with BCM
U1016
B2283 Battery #1 Fault
B2285 Battery #2 Fault
U1064 Loss of Communications with BCM
U1016
B0521 Tachometer Signal Circuit Malfunction
The car did get run at the track by my mechanic. It ran a best of 11.80@120 with a 2.0 60ft on drag radials. The other runs he missed a gear in, and he just couldnt seem to get it to hook up. He did fix a few things and port the TB. We didnt re dyno it but chuck did send us a new tune which seems to have more low end power.
We also found the steering problem which i am taking up there to get it fixed tonight. He installed the steering shaft in the wrong position which is causing the sensor to steer the car for no reason. I also scanned the codes through the DIC. Here is what i came up with. The new tune was uploaded on Friday, so the codes would have been reset then right? I didnt check to see which ones were history and which were current but here they are.
P1518 PCM to TAC Module Serial Data Circuit
C1221 LF Wheel Speed Sensor Input Signal is 0
C1222 RF Wheel Speed Sensor Input Signal is 0
C1241 Magna Steer Circuit Malfunction
C1248
C1278 TCS Temporarily Inhibited By PCM
C1287 Steering Sensor Rate Malfunction
C1288
U1000
B0502 RH DRL Relay Circuit
B0507 LH DRL Relay Circuit
B2482 Backup Lamp Relay Circuit
B2252 Key Cylinder Switch Fault
B2282 Battery #1 Fault
B2284 Battery #2 Fault
U1064 Loss of Communications with BCM
U1016
B2283 Battery #1 Fault
B2285 Battery #2 Fault
U1064 Loss of Communications with BCM
U1016
B0521 Tachometer Signal Circuit Malfunction
#125
i would think something is wrong. i have a 98 TA w/ magicstick, ls6 intake, lid, pulley, and it makes 405 at the wheels at 6500, this is with 98k miles on it and stock heads, throttlebody, etc. i tend to agree that its a lack of compression, and too big of a runner for the stock cubes and lack of compression. I also thing the 1 7/8 headers are too big. I would tend to say the best solution offered so far would be to cut the pistons and bump the compression. Hope things work out for you man.
#126
Well while fixing a steering problem i found out the two nuts for the rear tie rods were loose causing excessive side to side play in the rear wheels. I dunno if this could have caused a power loss or not but i suppose it could have cause it some.
#127
Originally Posted by Shawn MacAnanny
Well while fixing a steering problem i found out the two nuts for the rear tie rods were loose causing excessive side to side play in the rear wheels. I dunno if this could have caused a power loss or not but i suppose it could have cause it some.
Maybe you should keep making 130 mph runs with the hood up...
#129
LOL btw... not a lotto winner...and yes im going to school. (im very busy) turned 19 on july 10th, had my vette for a few months before my birthday
for any of you that are wondering im a computer aided drafter.. i live at home so i dont pay rent but i do pay for the car and the insurance all on my own... 600 car payment and 202 insurance. kinda sux that i cant drive it right now
for any of you that are wondering im a computer aided drafter.. i live at home so i dont pay rent but i do pay for the car and the insurance all on my own... 600 car payment and 202 insurance. kinda sux that i cant drive it right now
#130
Originally Posted by LostCauseZ06
LOL btw... not a lotto winner...and yes im going to school. (im very busy) turned 19 on july 10th, had my vette for a few months before my birthday
for any of you that are wondering im a computer aided drafter.. i live at home so i dont pay rent but i do pay for the car and the insurance all on my own... 600 car payment and 202 insurance. kinda sux that i cant drive it right now
for any of you that are wondering im a computer aided drafter.. i live at home so i dont pay rent but i do pay for the car and the insurance all on my own... 600 car payment and 202 insurance. kinda sux that i cant drive it right now
#131
Originally Posted by Shawn MacAnanny
HPE S cam, 238/242 .608/.612 115LSA
Car was tuned on the dyno with 30 degrees of timing advance.
Car was tuned on the dyno with 30 degrees of timing advance.
My hp was actually higher with a lower timing. My peak hp came at 23 degrees of timing.
#132
I service pools. like 90% of all the inground pools in the entire state. I am 1 of 2 service techs for Pools and Spas unlimited, the other being my dad whom i hired last week. I still live at home as well but pay for my car, insurance, the other 6 cars i had, and food and such. Pretty much i just dont pay rent. Car payment is $350 (mom got it through a home mortgage loan over 10 years) insurance for the truck and car is like $200 (mom as primary driver on vette, $598 just for the vette otherwise). That leaves enough money a month for an apartment but im just gonna save up the money for the 2 years i have to wait to get a house loan, save up a downpayment, build a new house, pay off the car with the home loan, and be all set. Lol.
Anyway we are going to try this weekend to try the timing thing. Chuck did the tuning so im sure it's right on where it should be but ya never know.
Anyway we are going to try this weekend to try the timing thing. Chuck did the tuning so im sure it's right on where it should be but ya never know.
#135
This is what it ran before we fixed the suspension (both rear tirods loose)
temp was 73, humidity was 80+.
60' -2.043
330-5.211
1/8-7..817
MPH-95.15
1000-10.021
1/4-11.893
MPH-120.94
I think it's still got more in it, especially with my driving. I made Fran drive becuase of my ankle. I broke the 3rd gear synchro, and snapped output shaft now, so i have to replace that before i can run it.
temp was 73, humidity was 80+.
60' -2.043
330-5.211
1/8-7..817
MPH-95.15
1000-10.021
1/4-11.893
MPH-120.94
I think it's still got more in it, especially with my driving. I made Fran drive becuase of my ankle. I broke the 3rd gear synchro, and snapped output shaft now, so i have to replace that before i can run it.
#136
Originally Posted by Shawn MacAnanny
This is what it ran before we fixed the suspension (both rear tirods loose)
temp was 73, humidity was 80+.
60' -2.043
330-5.211
1/8-7..817
MPH-95.15
1000-10.021
1/4-11.893
MPH-120.94
I think it's still got more in it, especially with my driving. I made Fran drive becuase of my ankle. I broke the 3rd gear synchro, and snapped output shaft now, so i have to replace that before i can run it.
temp was 73, humidity was 80+.
60' -2.043
330-5.211
1/8-7..817
MPH-95.15
1000-10.021
1/4-11.893
MPH-120.94
I think it's still got more in it, especially with my driving. I made Fran drive becuase of my ankle. I broke the 3rd gear synchro, and snapped output shaft now, so i have to replace that before i can run it.
so u saying i suck huh?.....just to let u know ive NEVER ran slower in ANY 6 speed car i have driven at the track
#137
Haha yeah man im 140lbs, almost 100lbs lighter probably. That's like .1 right? get the 60 to 1.6 thats already an 11.3 lol. I really wanted to see who was the better driver, we'll get to see here shortly.
#140
Originally Posted by wavrdr
Glad to hear you got the kinks worked out. It sounds like the car is screaming!
Do you have any pics of the car with the C6 wheels....Just curious...
Do you have any pics of the car with the C6 wheels....Just curious...