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Details about  Holden 253 304 308 HiRise Hyd Flat Tappet Cylinder Head Top End Engine Combo Kit

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Holden 253 304 308 HiRise Hyd Flat Tappet Cylinder Head Top End Engine Combo Kit
Item Ended
Item condition:
Brand New
08 Jun, 2014 21:43:11 AEST
Winning bid:
AU $1,325.00
24 bids ]
AU $150.00 Standard Postage | See details
Item location:
NSW, Australia


eBay item number:
Seller assumes all responsibility for this listing.

Item specifics

Brand New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read moreabout the condition

Engines & Components / Cylinder Heads / Cylinder H




253, 304, 308


Engine Parts

AT Racing World

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Holden 253 304 308 HiRise Hyd Flat Tappet Cylinder Head Top End Engine Combo Kit
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Holden 253 304 308 HiRise Hyd Flat Tappet Cylinder Head Top End Engine Combo Kit

Brand: Speedmaster™
Part Number: PCE435.1051
Part Type: Cylinder Head Combos
Product Line: Street Series
Camshaft Included: No
Intake Manifold Included: Yes
Fuel Delivery Style: Carbureted
Intake Material: Aluminum
Intake Finish: Natural
Carburetor Quantity: One
Intake Style: Single plane
Intake Basic Operating RPM Range: 1,500-6,500
Intake Manifold Model (descriptive): Speedmaster - Qualifier Series
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): 64 cc
CNC-Machined Combustion Chamber: No
Intake Runner Volume (cc): 195 cc
CNC-Machined Intake Runner: No
CNC-Machined Exhaust Runner: No
Intake Port Shape: Rectangular
Intake Port Location: Standard
Exhaust Port Shape: Square
Exhaust Port Location: Standard
Spark Plug Style: Standard
Comp. Valve Job: No
Intake Valves Included: Yes
Intake Valve Diameter (in): 2.020 in.
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in): 1.600 in. 
Valve Springs Included: Yes
Outside Diameter of Outer Spring (in): 1.250 in.
Damper Spring Included: Yes
Number of Springs Per Valve: Single
Retainers Included: Yes
Retainer Material: Chromoly steel
Locks Included: Yes
Lock Style: 7 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: 3/8 in.
Guideplates Included: Yes
Guideplate Pushrod Size: 5/16 in.
Pushrods Included: No
Valve Covers Included: No
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.
Calculator: CFM Calculator
Calculator Compression Calculator
Notes: Designed for use with hydraulic flat tappet camshafts less than .550 in. lift. Requires use of hardened pushrods. The valve and seat combination, used in these heads, is not recommended for use with a hydraulic or mechanical roller camshaft.

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
ntake manifold gaskets
Roller rockers
Screw in studs

Intake Manifold Information

The Qualifier series line of Manifolds is one of our most popular high performance street manifolds. Procomp Low Rise intake manifolds feature a single-plane design that can give you mid range horsepower without affecting the low-range. What Procomp did was increase the plenum volume and alter the short-side radius of the runners, to give the air/fuel charge a straight shot at the intake valves. That straight shot produces a potent power build from 1,500 to 6,500 rpm.

Suits: 253 / 308 / 304 Bottom end with 304 (EFI) Cylinder Heads
Note: Can be drilled to suit EF Injectors (Extra cost).

Intake Manifold Gasket Information

Speedmaster 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 Parts

Head Gaskets
Because our VN head is designed as a performance replacement for the factory head, you can use any OEM style head gaskets.

We prefer our Speedmaster MLS head gasket PCE348.1027. With all stainless construction, you won’t find a better gasket anywhere!

If you prefer Fel-Pro, use Fel-Pro # 1059 headgaskets.

Spark Plugs
Our Holden 304-308 cylinder heads require the use of a 14m. thread, 5/8” hex, .750” reach spark plug. Below you will find a list of some plugs that fit and work with our heads:

NGK - BCPR6ES, R5671A-7, R5671A-8
Autolite - 3923, 3924, AR3933, AR3934
Champion - RC12YC, RC10YC4, RC9YC3

Remember that you need a COLDER plug when you make more power, ie. N2O, Turbo and Supercharging!

Head Bolts / Studs
The head bolts / studs required are the same as factory Holden heads.

Speedmaster offers a 190,000 psi. head stud kit to suit our VN perfectly! the part number is PCE279.1020

ARP also offers both head bolts and head stud kits. Their head bolt kit is #205-3601 and the head stud kit is # 205-4601. Be careful to torque the heads following the OEM sequence in 3 steps to a final torque setting of 65lbs. using high pressure molly lube under the nuts and on the exposed threads of the studs.

Intake / Exhaust Gaskets
The Speedmaster heads are designed around using factory replacement gaskets.

We offer two different styles of intake gaskets. The Speedmaster PCE349.1017 is a paper style gasket for people looking for the lowest cost option, or head porters that are want a plain gasket they can trim to fit enlarged ports. We also have a premium Printed Sealer type gasket, Speedmaster PCE349.1016.




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