New 1/4 Time with TC/Trans upgrades

[JVolpe]

I went to the track this afternoon to see how the new TC/Trans upgrade would do. First time I have ever ran a WOT 1/4 in 4WD or launched over 15psi of boost. I made a number of runs trying to figure out exactly what I was doing with launch boost and lockup button. Not the best day for racing, 97*, high humidity and a head wind. OK all the excuses are out of the way.



Stock truck w/315s last Sept.



60' 2. 428

330 6. 898

1/8 10. 730 @ 64. 34mph

1000 14. 043

1/4 16. 818 @ 81. 00pmh



With Air Intake, Banks Exhaust, Juice/Attitude 100hp & 315s in March.



60' 2. 287

330 6. 446

1/8 9. 995 @ 69. 50mph

1000 13. 047

1/4 15. 657 @ 85. 58



Same as above except for TC/Trans upgrade.



60' 2. 005

330 5. 696

1/8 9. 271 @ 75. 02mph

1000 12. 138

1/4 14. 638 @ 89. 83mph



TC and Transmission upgrade makes it possible to launch with 20psi boost in 4wd. Took over 1 second off my best time with the exact same mods. I am pretty sure I will do better with a little more practice in 4wd. Still a long way off from my goal of low 13s, but a BIG step in the right direction.



Thanks Michael.

 

[KevinO]

Do you leave it in 4wd the entire run?

 

[JVolpe]

KevinO



Yes I left it in 4wd until slowed down after run. After reading all the posts related to launching in 4wd and trying a few launches, I decided that even if you shift it out of 4wd is stays locked up until you let off of the throttle. The first few times I did it made me pucker pretty good. I had no idea what kind of front end vibrations might happen at 80-90mph with the 315s in 4wd. After a few runs I felt comfortable with it. I had no real vibration or control problems at all, really can't tell that it is in 4wd unless you hold the T-Case shifter.

 

[NLamke]

Have you tried your 180 hp setting yet?

 

[CLAYTON]

Do you have the push button 4x4 or the manual shift 4x4?

 

[ECappleman]

Yes I left it in 4wd until slowed down after run.

Well, it was a nice running truck.

 

[Graphic man]

Have you tried 2 wheel drive?

and are you locking it up in second gear?

do you have a billet input and output shafts?

i would try 10 pounds of boost in 2WD or as much as you can without wheel spin

 

[JVolpe]

I did post about the TC/Trans upgrades on another thread. Setup for racing. Triple disc TC with custom HP/Stall, VB, billet input, intermediate and output shafts, bunch of other things. I think I was actually launching with too high a boost lauch. Will be working on that along with adding HP.



Graphic man,



I will not hook up the 315s with anything over 8psi boost in 2wd. It looks impressive to smoke the 315s for about 2-4 seconds, but does not get you down the track.