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Head Studs versus Bolts Read the Tech Discussion here ARP Head Bolts AMC/SB/BB Ford High Performance Series High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. Professional Series These fasteners deliver superior strength to meet the ARP "ZERO defect - ZERO failure" quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings.

AMC Application High Performance Pro Series Stainless Hex 12 Pt. 12 Pt. 12 Pt. U/C Hex 12 Pt. 258 cid inline 6 with 1/2˝ bolts   112-3601 $55 n/a n/a n/a n/a n/a 290-343-390 cid (1969 and earlier) 7/16˝   114-3601 $68 n/a n/a n/a n/a n/a 290-343-390 cid (1969 and earlier) with Edelbrock heads 7/16˝   114-3605 $139 n/a n/a n/a n/a n/a 304-360-390-401 cid (1970 & later) 1/2˝   114-3602 $89 n/a n/a n/a n/a n/a 304-360-390-401 cid (1970 & later) with Edelbrock heads 1/2˝   114-3604 $89 n/a n/a n/a n/a n/a 401 cid with Indy heads 114-3603 $89 n/a n/a n/a n/a n/a Chevy - Small Block Application High Performance Pro Series Stainless Hex 12 Pt. 12 Pt. 12 Pt. U/C Hex 12 Pt. 23° Cast iron OEM, Gen III Vortec/Truck, most Edelbrock, LT-AFR, Brodix-8,-10,-11,-11xb, LT-1, Dart Pro-1 & Trick Flow heads (all black oxide) 134-3601 134-3701 234-3701 434-3601 434-3701 134-3601 $72 134-3701 $75 234-3701 $172 n/a 434-3601 $145 434-3701 $152 23° Cast iron OEM, Gen III Vortec/Truck, most Edelbrock, LT-AFR, Brodix-8,-10,-11,-11xb, LT-1, Dart Pro-1 & Trick Flow heads ( black oxide inner rows, stainless steel outer row) 134-3603 134-3703   134-3603 $102 134-3703 $85 n/a n/a n/a n/a 23° Pro Action head 134-3604 n/a 134-3604 $99 n/a n/a n/a n/a 12-Rollover Brodix, 18° Brodix 134-3602 134-3702 234-3702 134-3602 $79 134-3702 $79 234-3702 $179 n/a n/a n/a 18° standard port 134-3607 234-3707 234-3723 134-3607 $89 n/a 234-3707 $175 234-3723 $219 n/a n/a 18° hi-port 134-3608 234-3708 234-3720 134-3608 $89 n/a 234-3708 $185 234-3720 $199 n/a n/a 18° hi-port with 3/8˝ holes, casting #10134363 and 64 234-3721 234-3722 n/a n/a 234-3721 $239 234-3722 $252 n/a n/a 18° Brodix-18c,-18x with 3/8” step stud 234-4727 n/a n/a 234-4727 $ n/a n/a n/a Bowtie with Brodix 12 - Weld-Tech, Dart II, WP Sportsman II, Brodix Track I 234-3703 n/a n/a 234-3703 $179 n/a n/a n/a Dart-Buick 234-3709 n/a n/a 234-3709 $185 n/a n/a n/a Oldsmobile 14° 234-3705 n/a n/a 234-3705 $175 n/a n/a n/a Pontiac Brodix aluminum heads, raised intake, -10xz RI 234-3704 n/a n/a 234-3704 $175 n/a n/a n/a Gen III/LS Series small block (2003 & earlier) hex 134-3609 n/a n/a 134-3609 $155 n/a n/a n/a Gen III/LS Series small block (2004 & later) w/ all same length hex bolts n/a n/a 134-3610 $99 n/a n/a n/a Small Block Ford Application High Performance Pro Series Stainless Hex 12 Pt. 12 Pt. 12 Pt. U/C Hex 12 Pt. 289-302 standard, Edelbrock head #8552 154-3601 $48 154-3701 $49 n/a n/a 454-3601 $79 454-3701 $85 302 with Windsor heads 1/2"-7/16" stepped washer, with 7/16" bolts 154-3605 $99 154-3705 $85 n/a n/a 454-3605 $129 454-3705 $132 302 with Windsor heads 1/2"-7/16" stepped bolt,1/2"- 7/16"  n/a n/a 254-3708 $135 n/a n/a n/a 302 Boss, V6 4.5L, inline valve 154-3602 $48 154-3702 $49 254-3702 $99 n/a 454-3602 $79 454-3702 $85 SVO, V6 4.5L inline valve, HBK n/a n/a 253-3702 $165 n/a n/a n/a 351 Windsor, Edelbrock head #8553 154-3603 $72 n/a n/a n/a n/a n/a 351 Cleveland, 400M 154-3604 $78 n/a 254-3704 $112 n/a n/a n/a 351 Cleveland SVO, iron block n/a n/a 254-3701 $149 n/a n/a n/a 351 SVO, Yates design n/a n/a 254-3709 $149 n/a n/a n/a 351 SVO, Yates 1994 design n/a n/a 254-3710 $149 n/a n/a n/a 351R block with C3/C3L heads n/a n/a 254-3711 $175 n/a n/a n/a Big Block Ford Application High Performance Pro Series Stainless Hex 12 Pt. 12 Pt. 12 Pt. U/C Hex 12 Pt. 390-428 FE series with factory heads or Edelbrock heads 60069, 60079 155-3601 $75 n/a n/a n/a n/a n/a 427 SOHC 155-3602 $75 n/a n/a n/a n/a n/a 429-460 n/a n/a 255-3701 $165 n/a n/a n/a 429-460 cid with Edelbrock heads 60669, 60079, 61669, 61649 155-3603 $212   n/a n/a n/a n/a

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