230-250-292 1.94 6 cyl Performance head .530 lift for roller rockers D
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. Including cone shaping the guides
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
Uses Tapered Seat sparkplugs 75 up