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 Exhaust Fabrication Note: Thread sealant must be

Note: Thread sealant must be used on all rocker bolts asthreads intersect with intake ports

- Great retail packaging for easy display and product protection

Must use a master cylinder that has those dimensions or has oval drilled mounting holes

Chamber Chamber:  58cc

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 Exhaust Fabrication Note: Thread sealant must beThe 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