yea,i got a 6.0 swap froma 5.3.it runs nowhere i thought it was.or where it should IMO.the reason i havent got a re-tune is because the mechanic told me to wait alittle while to "get on it" and wait to get the truck tuned. and with my gf prom around the corner i've spent so much money on it,im broke now.and had to put the stock push rods on it.could that be a problem? it only clatters at 1,100-1,500 rpms. once i pick it up faster it sounds good anf runs good too
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2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s 
Originally Posted by LamboDoNoMo
