5-Pack Bolt Kit, Hex Head S/S AR621-2000 Bar Mounts 12-Point Head S/S 612-4000 AR612-4000

12-Point Head S/S 612-4000 AR612-4000 5/16" UNC x 4

It will drop on your 23° short block as easily as our 227 or 235 SBC product and in fact shares identical valve centerlines and rocker stud locations to both of those heads

it is in-cased in a full billet bolt together bespoke outer cover to give that high quality finish

AR154-5503

Note: Recommended for use with Carburettor fuel pumps only - not EFi

5-Pack Bolt Kit, Hex Head S/S AR621-2000 Bar Mounts 12-Point Head S/S 612-4000 AR612-40005 Pack Bolt Kit, Hex Head S S1 4" UNC x 2. 000" UHL With 5 16" Socket Head AR621 2000 621 2000 Now you can use premium quality ARP stainless steel or chrome moly fasteners to install most anything on a car, boat or trailer. ARP's specially alloyed stainless steel bolts and heat treated 8740 chrome moly bolts with black oxide finish are nominally rated at 180,000 psi tensile strength to provide a substantial extra margin of safety over Grade 8