These are CNC'd 5.7 heads not the 98 style heads these are the centor bolts for 99+, with new valves, new springs(.650 lift), titanium retainers and new locks. I will even throw in a set of stock rockers so you can just bolt these on. These have never been mounted since purchased.

Flow Data
LS1 5.7 Stage 1.5
Lift Intake Exhaust
.100 71.3 52.1
.200 138.6 108.5
.300 200.4 160.0
.400 248.5 209.3
.500 283.0 236.9
.550 295.0 247.4
.600 300.4 255.3


They sell for about $1500. I will sell them for $1300 with the stock rockers, new GM bolts and gaskets to do the swap. These are some bad *** heads and since they are unmilled with work with pretty much all of the huge cams out there for the stock shortblock.