I ran a 14.05 in 2HI with a 2.13 60', spun a little off the line. Then I ran a 14.19 launching in 4HI and pushing the 2HI button after the 1-2 shift. 60' was 2.08 and I kind of messed up on the 1-2 shift. I was a little late and bounced off the rev limiter, otherwise I would have been a little faster.
Big slow mud truck with a TUNE!!!!!!
Found some more information on this subject. Keep in mind stock48 is running low 10s
T78, 1.15ar, bb - Page 2 - PerformanceTrucks.net Forums
99RCSB Broke because I wasted thousands and thousands of dollars on my truck.
nice info, better not try to change from 4h to 2h then.....
Yeah, but he is also running 10s. Apparently a stock transfer case can handle lot of power. Except for STOCK48, I have not heard of a stock transfer case fail...in a 4WD or AWD form.
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
What if you have a manual transfer case and you do the 2low mod where you put a switch in to disconnect the front axle in 4 low. Then launch in 4 hi and about the 60 ft flip the switch to disconnect the front axle and still leave tcase in 4wd. Would it work or help?
Haven't heard of doing that yet. Leaving the TC in 4WD means it will will still be spinning, creating a little bit of power loss through the driveline...Originally Posted by fastlt1
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
I launch in 4hi and hit 115.... The week part in these trucks for the front is the tie rods easy to bend... They make sleeves for them or u can buy after market tie rods that are like a 1/2in thick I think.. Then they have some with hime (sorry about spelling) joints ends not the ball joints... If u go watch the 09 camaro vs 05 silverado thred that's me doing my 4hi and u can see that the wheels toe in on that launch ill be getting the after market tie rods cause their either going to bend or snap if I keep launchn it like that hope that helps
Maze, ever looked into the Cognito steering braces? Those along with some stout sleeves and some QA1 double adjustables made a world of difference on the front end for me. Also kept me from throwing my alignment out every trip to the track. I would guees you are high 11s with the 115 trap speeds?
Last edited by Sizzle Chest; 11-05-2009 at 08:12 PM.
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2006 2500HD, RCLB, 4X4
6.0, 4L80e, 14 bolt
o i have no idea never been to track was just out playn around and we had a long stright and just kept going.... thought he was wondering how fast is 2 fast for 4hi so i just threw in the week parts of the front end for him if he wants to launch in 4hi... the cognito makes the tie rods also dont they?
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