can somone please educate me??

[mattjones]

last night i lined up with my buddies 04 silvy both trucks have the z-71 package with the 5.3. he smoked me i never even had a chance is there a major difference between our engines for the years?
his mods 04 silverado (everything is stock unless said otherwise) mileage: 120k
-intake
-blowmaster catback
- np tune
my mods 99 silverado (everything is stock unless mentioned) mileage:180k
-intake
-lpp longtubes w/ cat delete 3in flowtech terminator splitting to 2.5in duals.
-corvette servo
-np tune
im just looking for an explanation
also i hope im posting in the right section if not im sorry!

[ducky]

Reg cab or ext cab?

[mattjones]

both are ext. cab

[kerrige]

What distance were you racing? Roll racing? You likely suffer some bottomend losses from the long tubes. Tire heights and type of tire can make a big difference as well.

[Frenchy]

Gearing could be a factor. His being an 04 could also have the L33 High-Output 5.3

[mattjones]

We started from a dead stop. Both of us have 285/75/16 AT's

[bangbangskeetskeet]

What gears does each truck have?

[farmtruc]

99's are the slowest and lowest rated engines. mileage on both? compression? lots of variables. octane? drivetrain?
two identical engines , one with less hp or slower 1/4 mile, seen it a lot of times.
his was built on wednesday, yours on monday.

same thing as when one truck breaks records or puts out more hp than the others, now all the others expects their setup to do the same.
when in fact, there are variables and differences.

don't be sad, i have a slow one too; my escalade, it's just one of those combinations that can't take timing lol, luck of the draw.
yes, there are things to fix it and improve performance but steps need to be taken.

hope this helps, no sarcasm intended

[mattjones]

oh non taken farmtruc!! and im on you 89 octane tune. thank you all for the input. what steps do i start to take from here ive got some efans (just gotta order the harness from np) after that i was going to start getting ready for my cam adn drop in a 3200 stall, trans cooler, and shift kit. then my cam. are there any other "free" mods im missing after my fans that i could notice power in? id rather not change up my gearing my last truck had 4:56 gear ratio and it killed me on the highway. ive dont the air intake, full exhaust, cleaned the maf, i left the tb alone because i read on here its not needed until i go the route of FI. i thought about running nos but i dont know what kind of shot stock internals can take let alone my tired 4l60 witch im patiently waiting for it to start going so i can throw something a little better in it.

[o2camaross]

My buddy has an 04 ccsb z71 5.3 that is an absolute turd. I mean it is the heaviest silverado ever made lol but it seems much slower than it should. It has an intake, headers, efans, and tune and my roommate's bone stock 02 tahoe can beat it to 60 or so