ARP Cylinder Head Bolt Kit Big Block Chevy 348-409 W-Series 135-3602

ARP Cylinder Head Bolt Kit
Fits:
Chevy 348-409 W-Series Engine
OEM & Edelbrock Aluminum Heads

ARP #135-3602 or 1353602
Fastener Style: Bolt
Undercut Stud: No
Head Style: Hex
Fastener Material: Chromoly
Fastener Finish: Black oxide
Washers Included: Yes
Cut to Fit: No
Quantity: Sold as a kit.

8740 Chrome Moly: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi.