Chevy BBC 396 454 Hyd FT Cylinder Head Top End Engine Combo Kit [Oval Port]

Brand:	Speedmaster
Part Number:	PCE435.1016
Part Type:	Cylinder Head Combo
Product Line:	Hydraulic Flat Tappet
Camshaft Included:	No
Intake Manifold Included:	Yes
Fuel Delivery Style:	Carbureted
Intake Material:	Aluminum
Intake Finish:	Natural
Carburetor Quantity:	One
Intake Style:	Single plane with divider
Intake Basic Operating RPM Range:	1,500-6,500
Intake Manifold Height:	4.650 in.
Intake Manifold Model (descriptive):	Speedmaster - MidRise Air
Timing Chain and Gears Included:	No
Lifters Included:	No
Gaskets Included:	Yes
Cylinder Head Style:	Assembled
Cylinder Head Material:	Aluminum
Cylinder Head Finish:	Natural
Combustion Chamber Volume (cc):	119 cc
CNC-Machined Combustion Chamber:	No
Intake Runner Volume (cc):	320 cc
CNC-Machined Intake Runner:	No
CNC-Machined Exhaust Runner:	No
Intake Port Shape:	Oval
Intake Port Location:	Standard
Exhaust Port Shape:	Rectangular
Exhaust Port Location:	Raised
Spark Plug Style:	Angle
Comp. Valve Job:	No
Intake Valves Included:	Yes
Intake Valve Diameter (in):	2.250 in.
Exhaust Valves Included:	Yes
Exhaust Valve Diameter (in):	1.880 in.
Intake Valve Angle:	24 deg.
Exhaust Valve Angle:	15 deg.
Valve Springs Included:	Yes
Outside Diameter of Outer Spring (in):	1.450 in.
Damper Spring Included:	Yes
Number of Springs Per Valve:	Dual
Retainers Included:	Yes
Retainer Material:	Chromoly steel
Locks Included:	Yes
Lock Style:	10 degree
Valve Stem Seals Included:	Yes
Valve Stem Seal Style:	Positive stop
Rocker Arms Included:	Yes
Rocker Arm Studs Included:	Yes
Rocker Arm Nuts Included:	Yes
Rocker Arm Nut Thread Size:	7/16 in.
Guideplates Included:	Yes
Guideplate Pushrod Size:	3/8 in.
Pushrods Included:	No
Valve Covers Included:	Yes
Valve Cover Material:	Cast aluminum
Valve Cover Finish:	Polished
Valve Cover Mounting Style:	Perimeter bolt
Accessory Bolt Holes Drilled:	Yes
Valve Guides Included:	Yes
Valve Guide Material:	Bronze
Valve Seats Machined:	Yes
Valve Seat Machine Style:	3-angle
Valve Seat Material:	Ductile iron
Steam Holes Drilled:	No
Oiling Style:	Through pushrod
Machined for O-Ring:	No
Heat Crossover:	No
Cylinder Head Bolts Included:	No
Quantity:	Sold as a kit.

Don't spend hours figuring out which pieces and parts you need to get what you want from your engine. Speedmaster has already done the work for you; our Top-End engine kits will save you the time and hassle of mixing and matching components yourself. These kits are specifically designed to deliver the performance you want, at a better price than purchasing the parts separately. Kits include: Fully assembled Speedmaster cylinder headsIntake manifoldValve coversIntake manifold gasketsRoller rockersGuideplatesScrew in studsAssembly SpecificationsMax Lift: .550Coil Bind: .740Intake Install: 130lbs @ 1.8Exhaust Install: 130lbs @ 1.8Closed Sear Pressure: 110lbsOpen Seat Pressure: 300lbsIntake Manifold InformationThese manifolds for Big Block Chevys are a worthy companion to our phenomenally successful single plane small block racing manifold. Designed for serious performance big block applications, they feature nitrous bosses, dual distributor holddowns, four corner water ports, and are available for both rectangular or oval port cylinder heads. Rectangular port size at the gasket flange is 1.69-inches wide by 2.31-inches tall, which can be opened up to match the gasket and/or larger port cylinder heads.Runner size is effective for 468 to 540 cid engines.Intake Manifold Gasket InformationSpeedmaster intake manifold gaskets have Printoseal construction, which puts beads of special elastomers around the ports for extra sealing power. They also feature a non-metallic, rubber-fiber base material that resists gasoline and alcohol, while allowing engine builders to precision-trim around the intake ports.Cylinder Heads Suggested PartsHead GasketsDue to the wide combustion chamber needed to fit around the large 2.250/ 1.880_ valves, we recommend our PCE348.1004 MLS head gaskets. These gaskets are .041_ thick, and fit bore sizes as large as 4.540_ on all Mark IV and VI blocks, as well as aftermarket blocks. Felpro 1017 gaskets will also work with these head/ block combos. To install our BBC heads on Mark V blocks, you will need to use our SM5233L and SM5233R Elite Series MLS head gaskets. Alternatively, you can use Victor Reinz # 4918(R) & #4923(L) head gaskets on Mark V blocks with our heads.Spark PlugsOur heads require the use of 14mm. x 3/4_ reach 5/8_ hex gasket seat sparkplugs. Some recommended plugs are; NGK BCPR6ES or R5671A-7, Champion RC12YC, Autolite AR3923 or AR3924. Remember these are for mild street engines. Higher compression or boost requires colder sparkplugs!Head Bolts / StudsDue to the raised (+.625_) exhaust port location on our heads, +.100_ longer bolts / studs are needed next to each port. Use our PCE279.1005 head stud Kit. ARP #135-3703 12pt. Head bolts, and #235-4303 Head studs work too. If you already have a standard BBC head stud kit and are just looking for the 8 +.100_ studs, use our PCE279.1006 or ARP # 235-4306. These heads should be torqued to 65ft.lbs. using high pressure moly lube or 70ft.lbs. using 30wt. oil.Please consult your fastener manufacturer for their specific recommended torque values.Exhaust GasketsOur BBC heads utilize a 1.88_ x 1.88_ square exhaust port. This exhaust port requires specific gaskets. Our PCE355.1003 gaskets are made of re-useable copper, or if you prefer paper, use our pn# SM5123. Felpro also offers gaskets that work with our heads as # 1410.