la sacred 5.3

Hey whats up guys techs i have some questions well i guess im a newbie to this forrum well its the first time i ask something well i been having problems with my truck its a 2002 ext cab dont know why but like at mid or high rpm it stops pulling and let say the other truck gains on me and passes me well im going to tell u the mods i have and hope i can get this problem fixed thanks in advance my mods r 5.3 stock bottom end i have a nbs intake ported ,90mm ported throttlebody 36 pound flexfuel inj ,243 port and polished heads with hollow valves knn intake,headers ,cam 235 242 620 620 lift 109lsa custom grind cam built 4l60 trany 36 38 vigilante torq converter ,eaton possi with 456 gears wallbro fuel pump 3inch exoust magnaflow 1inlet 2 outlet 2 1/2 and some 18 in 305 40 18 nitto drags well here r my mods and hope somebody can helpme thanks and gb

la sacred 5.3

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Chevy7981

I got a 224/224 cam would i have any issues if i install it in a stock 5.3 i just want it for the sound

Jake33

I have 226 230. 575 600 it hits pistons had to change them

RevGTO

iTrader: (12)

I would wager there are newer and better options than those discussed in this ancient thread.

A viable topic, but one that deserves a fresh start in a new thread.