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PCE435.1006 Brand:SpeedmasterPart Number:PCE435.1006Part Type:Cylinder Head ComboProduct Line:Hydraulic Roller TappetCamshaft Included:NoIntake Manifold Included:YesFuel Delivery Style:CarburetedIntake Material:AluminumIntake Finish:NaturalCarburetor Quantity:OneIntake Style:Single plane with dividerIntake Basic Operating RPM Range:1,500-6,500Intake Manifold Height:4.650 in.Intake Manifold Model (descriptive):Speedmaster - Eliminator SeriesTiming Chain and Gears Included:NoLifters Included:NoGaskets Included:YesCylinder Head Style:AssembledCylinder Head Material:AluminumCylinder Head Finish:NaturalCombustion Chamber Volume (cc):64 ccCNC-Machined Combustion Chamber:NoIntake Runner Volume (cc):190 ccCNC-Machined Intake Runner:NoCNC-Machined Exhaust Runner:NoIntake Port Shape:SquareIntake Port Location:StandardExhaust Port Shape:SquareExhaust Port Location:StandardSpark Plug Style:StraightComp. Valve Job:NoIntake Valves Included:YesIntake Valve Diameter (in):2.020 in.Exhaust Valves Included:YesExhaust Valve Diameter (in):1.600 in.Intake Valve Angle:23 deg.Exhaust Valve Angle:23 deg.Valve Springs Included:YesOutside Diameter of Outer Spring (in):1.450 in.Damper Spring Included:YesNumber of Springs Per Valve:DualRetainers Included:YesRetainer Material:Chromoly steelLocks Included:YesLock Style:10 degreeValve Stem Seals Included:YesValve Stem Seal Style:Positive stopRocker Arms Included:YesRocker Arm Studs Included:YesRocker Arm Nuts Included:YesRocker Arm Nut Thread Size:7/16 in.Guideplates Included:YesGuideplate Pushrod Size:5/16 in.Pushrods Included:NoValve Covers Included:YesValve Cover Material:Cast aluminumValve Cover Finish:PolishedValve Cover Mounting Style:Perimeter boltAccessory Bolt Holes Drilled:YesValve Guides Included:YesValve Guide Material:BronzeValve Seats Machined:YesValve Seat Machine Style:3-angleValve Seat Material:Ductile ironSteam Holes Drilled:NoOiling Style:Through pushrodMachined for O-Ring:NoHeat Crossover:NoCylinder Head Bolts Included:NoQuantity: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 heads
Intake manifold
Valve covers
Intake manifold gaskets
Roller rockers
Guideplates
Screw in studs
Assembly Specifications
Max Lift: .580
Coil Bind: .750
Intake Install: 145lbs @ 1.9
Exhaust Install: 145lbs @ 1.9
Closed Sear Pressure: 145lbs
Open Seat Pressure: 360lbs
Cylinder Heads Suggested Parts
Head Gaskets
The head gasket we recommend for our 23deg. heads used on 327/350/383/400 SBC engines without steam holes is Felpro #1003. On engines using the GM 400 block, or aftermarket blocks with steam holes, use Speedmaster PCE348.1006 or Felpro #1014.
Push Rods
Our aluminum 23deg. heads typically use +.100" (longer than stock) pushrods, Depending on the components used, it is possible that you may need pushrods shorter or longer than that so we recommend that you use an adjustable pushrod to dial in your rocker geometry and order pushrods to match.
Spark Plugs
All Speedmaster 23deg. SBC heads use standard 14mm. x 750" reach, 5/8 hex, gasket seat sparkplugs like NGK R5671A-7, Autolite 3924, Champion RC12YC, etc. Remember that higher compression/ boost require a colder heat range sparkplug.
Head Bolts / Studs
Our 23 degree heads utilize standard head bolts or studs. Our part number for head bolts is PCE279.1002, and the head studs are PCE279.1001. For the 15 degree heads, we recommend SM2451-15DEG. headstud kit with 3/8" reduced shank on the studs between intake ports. The ARP head bolt part number is 134-3601, and ARP head studs 234-4301 for the 23 degree heads. ARP also makes a head stud kit that is compatible with our 15deg. heads on cast iron blocks with part number 234-4723.
Exhaust Gaskets
We recomend the use of our Exhaust gaskets # SM5120 or Fel-Pro #1405 on our 23 degree heads. On our 15 degree heads, use SM5121 or Fel-Pro #1409.
Roller Rockers Information
Speedmaster Aluminum Roller Rockers are extruded from 6061 T6 Aluminum. The larger needle bearing fulcrum can withstand valve spring loads up to 600lbs, while the extruded body has a tensile strength over 60,000 PSI. Ideally suited for use with Solid / Mechanical flat tappet and Hydraulic Roller Cams. They feature very precise valve operation, horse power increase of 10-15, increases valve train life dramatically, acceleration is more responsive, oil temp will run approximately 5-10 degrees cooler.
Item Condition: Brand New
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