
Originally Posted by
Tolliwacker
Start with sandpaper, about a 320 grit, and go from there to a 800-1000 grit. Then get some aluminium Mag polish and use plenty of Elbow grease, might want to remove the butterfly once again to get it completly through the bore.
do ya have too retune after this ,i know i stayyed with same mm t/b just went too bbk and ran like sht ,curios if this guy is gonna start his truck and go holy sht what did i do.
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .