440 Source Aluminum Heads

I have them on a 512 Stroker in a 72 Satellite Sebring. No problems, no issues, all I did was double check the springs and valves. Also have there roller rockers and shafts!! Excellent part and great tech support. I got the heads(CNC ported & assembled, NIB) & there Roller Rockers, push rods, shafts and shims for $1000.