cylinder head s/r sb chev (for 305 c.i.d.), 58cc chamber, straight plug, hydraulic cam 1.250' (3000) spring assembly

World’s S/R cylinder heads are the preferred alternative to expensive OEM castings or junkyard rebuilds. These heads are designed with extra-thick decks and walls for improved reliability as well as equipped with hardened steel exhaust seats that are compatible with today’s unleaded gasolines. They are machined for screw-in rocker arm studs for extra durability. 58cc chamber is suited for 305 cubic inch SBC. S/R Cylinder heads are fully 50-state emissions legal and because they are an OEM replacement head, they are legal for use by many oval tracks and race Sanctioning organizations.

Chamber Volume : 58cc

Make : Chevrolet

Material : Iron

Notes : Suited for 305 CID SBC / For hydraulic flat tappet cams

Runner Volume : 170cc

Spark Plug : Straight

Valve Head Diameter : 1.940/1.500

Valve Spring : 1.250