Page 1 of Big Block Chevrolet Merlin Cylinder Heads by World Products

merlin oval port the high velocity head for great bottom-end and mid-range torque machined surfaces for superior sealing exhaust port head bolt bosses raised 1 to unrestrict air flow complete assemblies equipped with manley stainless steel valves accepts all chevy mk iv valve train components accessories exclusive right castŪ technology assures optimum port accuracy oval-shaped intake ports provide excellent velocity technical specifications material high density cast iron valve seats integral intake hardened steel exhaust valve guides integral cast iron valve spring seats machined for 1.550 springs valve size 2.300 x 1.880 rocker arm studs 7/16 shank screw-in style with hex shoulder furnished with assembly exhaust flange stock port location includes accessory bolt holes included in base assembly manley racemaster 1 -2 models 1-pc forged stainless steel valves with swirl-polished heads ring band style 1 -2 models valve seals 1.550 1 -2 models or valve springs manley 7° chrome moly 1 -2 models retainers keepers and pushrod guide plates recommended installation items head gaskets fel-pro #1017-1or equivalent pushrods requires heat-treated stock length pushrods spark plugs accepts 14mm .460 reach tapered seat 5/8 hex champion #670 or #802 or equivalent heat range may vary consult with engine builder intake gasket fel-pro #1212 or equivalent for oval port fel-pro #1211 or equivalent for rectangular port exhaust gasket fel-pro #1410 or equivalent head bolts 8 longer than stock required world #832015-8 merlin 269cc oval port heads are excellent for most street-driven big blocks up to 468 c.i.d.they ll out-perform larger heads in many applications because the intake runners have a very high velocity and the stock 2.190 diameter sized valves have been replaced with 2.300 diameter valves to also improve flow it s the best of both worlds true d-shaped exhaust ports help expedite the flow of spent gasses which also contributes to improved performance we used these heads on world s own daily driver and cruiser engines because of their excellent low and mid-range torque output merlin oval port heads are great for towing applications and have a strong following in the marine market right castŪ 269cc oval port intake runners 119cc open chamber design is far superior to oem closed chambers merlin ii 269cc oval port cast iron high performance bbc heads 11/32 guides 2.300 x 1.880 part 030040 030040-1 030040-2 description bare merlin head merlin iron head merlin iron head intake runner oval 269cc hydraulic oval 269cc mech hyd roller oval 269cc cam type valve type manley race master manley race master spring specs 1.550 dual 120 seat 1.550 dual 150 seat max lift chamber 119cc .600 119cc .650 119cc 24 rev 2/07 cylinder heads

[close]