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Holden V8 EFI 5.0L Alloy Dash 9 Cylinder Heads (ASSEMBLED HEAD & ROCKER PACKAGE) (NO Injector Notches)

  • Image 1
  • Assembled Head and Rocker Package
  • Platinum Shaft Type Adjustable YT 6313
  • Image 4
  • NO Fuel Injector notches are machined into this part number heads.
  • Image 6
Price:
$4,580.00
SKU:
ABHA304-9R
Weight:
10.80 KGS
Shipping:
Calculated at checkout
Quantity:



Product Description

 

 

The Ultimate Power Fix Package for all Holden V8's

520HP OUT OF THE BOX!

VN STYLE ALLOY CYLINDER HEADS AND PLATINUM ROCKERS

P/No. ABHA 308-9R (ASSEMBLED HEADS AND ROCKERS)

(NO Injector Notches) 

 

PACKAGE INCLUDES: Assembled ABHA 5000-9 Alloy heads and YT 6313 Platinum Roller Rockers  

The VN style asymmetric port Yella Terra alloy head is the first choice among serious engine builders seeking maximum power from any Holden V8 engine.

The intake & exhaust port design has been significantly improved “as cast” and a greater amount of material is retained between water jackets to allow more       radical porting by cylinder head specialists.

Great attention has been given to straightening the path from manifold to valve including relocating the exhaust valve further away from the intake and straightening the exhaust port exit. Subtle improvements into the basic design such as careful blending of the metal around the valve guides contribute to the excellent “as cast” flow figures with over 520 horsepower potential out of the box, with 2.02” size intake valves.

The chambers can accommodate massive 2.08” intake valves and are fitted with quality valve seat inserts, compatible with unleaded and LPG fuels.

The enormous power potential of YellaTerra VN style alloy heads can be adapted to pre injection 308 Holden engines when used in conjunction with                   VN style intake manifolds or injection, VN style flat tappet or roller camshafts and VN style exhaust headers.

The Ultimate power fix for ALL Holden V8’s and offer the added advantage of a 50% weight reduction over cast iron factory heads.

These heads require Yella Terra shaft type Platinum roller rockers (YT 6313) 

 

Technical Specifications

Suits: Holden 5.0L (304,308,355,383)

Material: AS 601, 356 -T6 heat treated aluminium

Min Hardness: 88HB

Weight: Bare 10.8kg - Assembled 12.7kg

CC Vol.: 59cc w/ 2.0mm extra joint face material - 44cc with face machined to std GM thickness

Deck Thickness: .625”

Inlet Port Vol: 168cc w/o injector notches

Inlet Port Dimensions (hxw):52mm x 31mm

Exhaust Port Dimensions (hxw):35.5mm x 35mm

Inlet Valve Size: 2.020”min - Insert Size 2.200” x .375”

Exhaust Valve Size: 1.600”min - Insert Size 1.750” x .375”

Spring Pockets: 1.50”dia min - Material Thickness .420”

Installed Height: 1.760” w/ std length valves

Valve positions: Inlet valve: std position - Exhaust valve: moved 2.0mm away from inlet - Exhaust port exit: moved 2.0mm opposite

Spark Plugs: Machined to accept tapered seat or washer seat spark plugs

 

 

 

 

 


Warranty Information

12 Months

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