Re: LT4 heads or After market!!!
+1 on a set of Advanced Induction heads. I had them do a set of Trick Flows for me. Might as well invest the money now, like the rest of us you will end up doing it later anyway.
'95 Z-28, Forged 4-bolt 383, Vortech T-trim, FAST XFI, TH400 w/ TCS 3200 stall, Comp Cams 227/239, Pro Magnum 1.6 rr's, Delteq, 65# injectors, Nasty Performance Street Stage 3 fuel system, Advanced Induction 215cc TFS heads, Grotoyhann LT's, Moser 9" w/3.70's Detroit Locker and 31 spline axles.