Boost+Nitrous/ 4.8L in-truck GoPro 1080P
02-13-2011, 11:26 PM
#1
Boost+Nitrous/ 4.8L in-truck GoPro 1080P
Well... I still own a 11 second truck... no 10s for me...
Setup tonight was 76mm at 15psi with 50 shot. Got two runs, first run the wideband error'ed out so HPtuners did not trigger the spray, only extra fuel so I was pig rich. Second run was clean.
However, I've come to another wall. The extra HP from the nitrous eats up my transmission setup. I need help though, is this converter slip or transmission slip?
I run a built 4l80E built by CKperformance rated at 1000HP and a circle D 9.75inch triple disk converter stall speed of 3200-3400 but is easy to footbrake to 3700-3800.
Truck drops about 700-800 rpms between shifts but within .5 second its right where it was in RPMS before the shift. Nitrous run I was in second gear for 1.9 seconds, 3rd gear for 7 second, 6 of those seconds between 6100-6200 rpms. Like I said it seems with more HP it gets worse and also just seems to be getting worse anyways. Trans temps have never been over 200, usually around 150-160.
Here's couple clips showing how it shifts different with less power and then on the clean run. If you have high speed, select 1080p to see the tach better and full screen that sucker. GoPro Hero is the ****.
Also beat up 2011 camaro with a 175 shot. It was damn close though.
http://www.youtube.com/watch?v=HzFUuCJJOl0&hd=1
http://www.youtube.com/watch?v=aObU1C3yMAg&hd=1
http://www.youtube.com/watch?v=6L7G8azIIOw
Setup tonight was 76mm at 15psi with 50 shot. Got two runs, first run the wideband error'ed out so HPtuners did not trigger the spray, only extra fuel so I was pig rich. Second run was clean.
However, I've come to another wall. The extra HP from the nitrous eats up my transmission setup. I need help though, is this converter slip or transmission slip?
I run a built 4l80E built by CKperformance rated at 1000HP and a circle D 9.75inch triple disk converter stall speed of 3200-3400 but is easy to footbrake to 3700-3800.
Truck drops about 700-800 rpms between shifts but within .5 second its right where it was in RPMS before the shift. Nitrous run I was in second gear for 1.9 seconds, 3rd gear for 7 second, 6 of those seconds between 6100-6200 rpms. Like I said it seems with more HP it gets worse and also just seems to be getting worse anyways. Trans temps have never been over 200, usually around 150-160.
Here's couple clips showing how it shifts different with less power and then on the clean run. If you have high speed, select 1080p to see the tach better and full screen that sucker. GoPro Hero is the ****.
Also beat up 2011 camaro with a 175 shot. It was damn close though.
http://www.youtube.com/watch?v=HzFUuCJJOl0&hd=1
http://www.youtube.com/watch?v=aObU1C3yMAg&hd=1
http://www.youtube.com/watch?v=6L7G8azIIOw
02-14-2011, 12:37 AM
#3
Hopefully a restal will help but the converter might be too small. My 10.5'' does the same thing when I run the pt88. Rpm never drops below 6300RPM after launch, and hits the 6800 limiter on the 1~2 shift no matter what I do. Yank said it's costing me big...
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02-14-2011, 10:59 AM
#10
Nice vids! (but I only watched to 480 here at work) I used my Go-Pro for the first time at the track yesterday but haven't downloaded the vids yet. Question though, what attachment did you use to get the angle from the back glass? My suction cup only has one mount which puts the camera perpendicular to the suction cup.