top end induction package off my 434ci LSx. heads & intake were all spec'd & worked on by tony mamo. aside from the original spec's these heads were built with - they have the 10mm rocker bolt upgrade, tonys porting & milled to 70cc by him. i installed new valve springs at the end of last season. The rockers are 1.7 yella terra's that require the YT specific valve cover seals to clear the stock valve covers.
afr 245 mongoose head specs (from afr site)
Smm Bead Lock Intake Valve, 2.165" × 4.900"
Overall Valve Length
8mm Bead Lock Exhaust Valve, 1.600" × 4.900"
Overall Valve Length
PAC Racing Spring 1.270" OD Hydraulic Roller Dual Valve Spring, 155 Ibs. on seat, 650" maximum lift, Max RPM 7000-7200
7º Titanium Retainers 1.245" O.D x .885" I.D x .655"
I.D
7º Bead Lock Valve Keepers
Viton Valve Seals .600" O.D x .495" I.D
Hardened Valve Spring O.D Locator 1.380" O.D x
.570" I.D
Ductile Iron Intake Valve Seats 2.200" O.D × 1.750"
I.D x .375" Deep
Ductile Iron Exhaust Valve Seats 1.650" O.D × 1.350"
I.D x .375" Deep
8 mm Bronze Valve Guides .502" O.D × 2.100" O.A.L
