230-250-292 1.94 6 cyl Performance head .530 lift for roller rockers G
As the title says. Performance head for the 230-250-292 6 cyl engines.
Expect a TQ and HP increase with this head. Ready to bolt on and Go!
LARGE chamber head. Right at 70CC Chamber. Will raise the compression of a 230-250-292
Cleaned, crack checked, pressure tested
New guides installed
Hardened exh seats installed
Intake valve increased to 1.94
Exhaust valve 1.60
Throats were cut for the larger valves and radius-ed in by hand
Medium Porting done on Intake and exhaust ports. Valve guides were cone shaped
HI-FLOW bolt in lump kit installed
Machined for Viton valve seals And installed.
Uses Roller rockers with Screw in studs, 7/16 Studs included
Stainless steel chromed stems valves. Undercut stems.
Setup with .530 lift capable springs and lite weight retainers.
Head decked .030 to increase compression
TAPERED SEAT sparkplugs 75 UP