Bare GM LS3 6 Bolt 276cc CNC Ported Aluminium Cylinder Heads with 70cc Chamber (Pair) 2.60" x 1.28" Intake Port, 1.47" x 1.64" Exhaust Port Cylinder Heads firewall plate may be needed

firewall plate may be needed to fit

165" diameter intake valves and 1

Brass Left Mount Proportioning Valve Kit

continuous power throughout the engine's RPM

These 15° LS3 Rectangle Port heads are designed to fit LS series engines with a 4

Bare GM LS3 6 Bolt 276cc CNC Ported Aluminium Cylinder Heads with 70cc Chamber (Pair) 2.60" x 1.28" Intake Port, 1.47" x 1.64" Exhaust Port Cylinder Heads firewall plate may be neededThe Aeroflow Series of Aluminium Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. Theseheads utilise ultra smooth A356 T6 aluminium castings, new as cast runner and chamberdesigns produce excellent flownumbers. This combined with a 5 angle competition valve job,diamond honed bronze guides, hand bowl blending and professional assembly help to outperform some of the best brands in the business. The