325/600 1/4 times with Predator Stage II

[JVolpe]

My first diesel truck and of course first Cummins. I have caught the speed/BOMB bug.



Until a couple of weeks ago I had not been on a drag strip since the late 70s. Now I have the need for speed again. Maybe its late life crisis, don't really know but I got it.



I had kinda set mid 14s for the goal for my 7500lb 4x4. Of course the diesel forums have helped to fuel my desire. I see many running 13s.



Enough of that, this is my progress so far: 2004. 5 2500 QC 4x4 600 48RE 3. 73 LS. (BFG 315/70R/17s - not best for strip)



gauges (pyro, 60psi boost, trans temp).

1/4 Times at this point all stock: 9/12/04: Weight 7395lbs

60' 2. 428

330' 6. 898

1/8 10. 730 @64. 34

1000' 14. 043

1/4 16. 818 @81. 1



Added:

aFe Magnum Force & Torque Tube with standard filter/pre-filter.

Dr. Performance(Predator) Stage II for 325/600(85HP,160fpt)



1/4 Times at this point: 9/26/04: Weight 7425lbs

60' 2. 287

330' 6. 446

1/8 9. 995 @69. 50

1000' 13. 047

1/4 15. 657 @85. 58



The Dr. Performance(Predator) Stage II definitely adds hp/torque. I am satisfied with this box for now. 1. 161 second gain in 1/4 is very signficant.



Banks Monster exhaust did not make it Friday for yesterday's runs, it will be on this weekend. It wont help times, but maybe help not melting something.



Launched at between 5-10 PSI boost and really never let up. EGTs went to 1400-1440 and pretty much stayed there.



Only thing that scares me is the boost on launch will peak very close to 39 PSI and then drop to 30-32 for most of remainder of 1/4.



Trans temp after 3 runs got up to about 170 never higher.



For now I will just plan my mods for after Tax Time next spring, I can live with 15s, just couldn't live with 16s.



It does appear that if I drive my age that my MPG with the Predator Stage II has improved at least 1 - 1. 5 MPG. Of course it is very hard to drive my age.

 

[Chris N5CWM]

That's interesting info. I figured your times would be quicker and speed a few mph faster since you have the 48RE.



My 2001. 5 ETC with an early Edge '3-light' box, and 275 RV injectors, I turned 15. 8@92 and that's shifting an NV4500 5-speed and a stock clutch that slips a bit.



My truck weighs 6,640 Lbs. on the track scales.

 

[JVolpe]

Chris



There was a solid 10mph head wind, 93 degrees, high humidity. Most others with that time were in the same or not much better mph range. The 315s and 2" leveling kit make for a pretty high profile on the new body style.



If I get serious about the strip, I will to back to stock size tires. I don't think the trans is slipping any with this HP, but just does not get enough torque to the rear wheels. TC and Trans is the upgrade that I want the most for now.