Cylinder heads come fully rebuilt to factor specs. - Pressure Checked -3 angle valve job -surfaced block and manifold side -new valve stem seals. options available are new bronze guides with cut back,...

Datsun L-series N47 cylinder head. Can be built stock, mild or wild Let us know in a message.

Performance Swirl Polished Valves for L-Series Engine. Undercut Stems for increased flow and reduced weight. OL 4.620

Performance Swirl Polished Valve for L-series Engine. Undercut stems to increase flow and reduce weight. OL 4.620"

Performance Swirl Polished Valves for L-Series. Undercut Steams for reduced weight and increased flow. OL 4.580"

Swirl Polished Performance Valve for L-Series engine. OL 4.580" Undercut Stems to reduce weight and increase flow. Harden tip to insure longevity

SBI Intake Seat Price is Per Seat

SBI Intake Seat Price is per Seat.

SBI Exhaust Seat. Price is per Seat

SBI Intake Valve Seat. Price is per seat.