Gm Ls 276 cc Alumin Heads Bare 70 cc, 2.165"/1.60" Valve 6 bolt Morse Cable; D x 5-1/4" (133mm) Top

D x 5-1/4" (133mm) Top O

Part Number: AF620-04S

17mm hex with retainer cliprecess

8 x 3/4" (19mm) Outside Diameter

Part Number: AF6040-6000

Gm Ls 276 cc Alumin Heads Bare 70 cc, 2.165"/1.60" Valve 6 bolt Morse Cable; D x 5-1/4" (133mm) TopPart Number: AF95 0408 the series of aluminium cylinder heads are taking affordable Aeroflow performance street and strip cylinder heads to the next level. These heads utilize ultra smooth a356 t6 aluminium castings, new as cast runner and chamber designs produce excellent flow numbers. 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