SierraSlow

i have posted about this before,but ill try again.
i have a 04 gmc ecsb 4x4 with a 5.3 and 3.73 rear,and i have installed a transgo kit with a vette servo.i am totally inimpressed with bottom end performance[below 3500]i think a yugo could kick my *** to the 60' mark.does anyone have any proven mods that help low end performance or is this just the way these LS engines are?
anyone try advancing the stock cam timing?iam afraid to try a larger camshaft,thinking this will move the power band up even further.
anyone try milling the heads to increase compression?
i have tryed PCM mods with total torque management removed and after all the hype of doing this, the improvement was hardly noticeable. is my truck a freak?i do not want a higer stall converter,that is just a crutch.
HELP!!

PappyDan

iTrader: (4)

what do you want to do rock climb or drag

SierraSlow

just act like it has 8 cylinders.you know have low speed power.it is just and everyday truck i tow my drag car with.

Tokez420

LSx engines are just like that
but u can do a torquey cam...something like a 208/212

PappyDan

iTrader: (4)

one03sierra

iTrader: (1)

did you remap your timing tables and fuel when you tuned it. did you take out all tqm. arent there like 5 tables i think. oh yay it is an 04. you need to do a search and find where parish fixed the throttle plate closing at wot. you may have done all this but just checking.

SierraSlow

nelson has done three different tunes,all results were basically the same.

kwkshift

Electric fan(s). Check my sig. It made a very nice improvement in throttle response and low end.

SierraSlow

hey 02denali,what is this about throttle plates closing?need more info?i cant answer your question on the timing and fuel tables,allen told me his tune was for 100% TQ managemant removed.did not improve low end at all,not even a little.from 3500-5500 it did feel stronger.
kwkshift,i have thought about fans but have yet to try anything.

NovaTime

a nice cam will take care of that