AEROFLOW PERFORMANCE CYLINDER HEAD BOLT KIT [HOLDEN V8 RED/BLUE/BLACK/INJECTED MOTOR]

AEROFLOW PERFORMANCE 8740 GRADE CYLINDER HEAD BOLT KIT
12 POINT HEADS
HOLDEN V8 253 4.2L & 308 5.0L RED/BLUE MOTOR
HOLDEN V8 304 & 308 5.0L BLACK MOTOR
HOLDEN V8 304 5.0L INJECTED MOTOR
HOLDEN V8 355 5.7L STROKER MOTOR (348ci)

HOLDEN V8 RED/BLUE/BLACK MOTOR
05/1969-1984 HOLDEN [HT-HG-HQ-HJ-HX-HZ-WB SERIES]
03/1974-03/1978 HOLDEN [LH-LX TORANA]
10/1978-08/1988 HOLDEN [VB-VC-VH-VK-VL COMMODORE]

HOLDEN V8 INJECTED MOTOR
03/1989-1999 HOLDEN [VN-VP-VR-VS-VT COMMODORE]
03/1990-1999 HOLDEN [VQ-VR-VS STATESMAN/CAPRICE]
09/1990-2000 HOLDEN [VG-VP-VR-VS UTE]

Aeroflow Performance head bolts greatly improve your cylinder head-to-block sealing compatibilities. This is important in engines with high power adders such as turbochargers, superchargers or nitrous. They can even be agreat addition to a mildly modified build as insurance against failure.

These head bolts are manufactured from aircraft quality 8740 high tensile strength chromoly steel and cold-forged to ensure molecular integrity within the bolt. Meaning these bolts are rated up to 190,000 psi making them stronger than Grade 8 and OEM fasteners. Allkits come complete with hardened parallel washers for an even load distribution and accurate torque readings.

SPECIFICATIONS:
14 X LONG BOLTS
105.5MM UNDER HEAD LENGTH
7.2MM SHANK LENGTH
7/16-14" THREAD INTO ENGINE
18.7MM BOLT HEAD DIAMETER

10 X SHORT BOLTS
44.2MM UNDER HEAD LENGTH
16.2MM SHANK LENGTH
7/16-14" THREAD INTO ENGINE
21.5MM BOLT HEAD DIAMETER

24 X FLATWASHERS
20.5MM OUTSIDE DIAMETER
11.5MM INSIDE DIAMETER
3MM THICKNESS

SPECIAL NOTE:
FOUR CENTER VALLEY BOLTS NOT INCLUDED

CRITICAL NOTE:
FOLLOW HOLDEN'S RECOMMENDED TORQUE SEQUENCE AND TIGHTEN BOLTS TO SPECIFICATIONS