136 WARNING: Cancer and Reproductive Harm - www P65Warnings ca gov s l California Residents WARNING: Cancer www P65Warnings ca gov CIRCLE TRACK Diameter Length Thread Length Socket Size Head Style Part No. CHEVROLET 7/16 6 000 1 100 1/2 12-point 330-0701 s 1/2 6 000 1 100 9/16 12-point 330-0702 s 7/16 6 250 1 150 9/16 12-point 330-0703 s 1/2 4 000 0 750 15/16 Hex 330-0704 l 1/2 4 000 0 625 15/16 Hex 330-0705 l 1/2 3 750 0 625 15/16 Hex 330-0706 l 1/2 3 250 0 750 15/16 Hex 330-0707 l 7/16 5 000 1 000 1/2 12-point 330-0708 s 7/16 5 500 1 000 1/2 12-point 330-0709 s FORD 5/8 8 000 1 100 15/16 Hex 350-0701 l 5/8 8 375 1 000 15/16 Hex 350-0702 l 5/8 7 000 1 000 15/16 Hex 350-0703 l Get maximum reliability through the use of ARP’s rugged 8740 chrome moly steel front mandrel bolts. They’re undercut to provide the required stretch, shot-peened for extra durability and designed for full thread engagement. Nominally rated at 190,000 psi tensile strength for durability you can count on! Available for GM and Ford applications. Front Mandrel Bolts Application Qty Dia. UHL Wrenching Black Oxide Stainless Hex 12-Point Hex 12-Point CHEVROLET Chevy small block, drilled 12 3/8 0 750 3/8 100-1103 s 100-1203 l 400-1103 l 400-1203 l Chevy big block, drilled 16 3/8 0 875 3/8 400-1104 l 400-1204 l UNIVERSAL Universal, drilled 16 3/8 0 750 3/8 400-1105 l 400-1205 l Universal, drilled 12 3/8 0 875 3/8 400-1106 l 400-1206 l ARP offers special NASCAR header bolts that have been drilled for use of safety wire. They are made from heat-treated 8740 chrome moly steel with a black oxide finish or Stainless steel that is polished to a bright shine. Both materials are nominally rated at 180,000 psi tensile strength – considerably stronger than Grade 8 hardware, and engineered to provide complete reliability in the most severe racing environments. They are available in hex or 12-point heads. Through use of safety wire, exhaust headers will maintain original tightness and can’t back off! Drilled for safety wire Drilled Header Bolts
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