Main Stud Kit for Chevrolet World - Merlin II & III blocks w/ outer bolts (for #2, 3 & 4)

Main Stud Kit for Chevrolet World - Merlin II & III blocks w/ outer bolts (for #2, 3 & 4)There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs

while the compact head is easily accessed

the compact 12-point inut lets you easily slip a socket close to the pipe

each stud is centerless ground to makeit as close to perfectly concentric as possible

Both models feature a large diameter

Material: ARP2000

To be used with ARP’s patentedPerma-Loc™ adjusters

which makes for amore consistent clamping force – and one that compensates forhead gasket compression when the cylinder heads are installed

Material 2:

originally developed for NASCAR competition

They are both forged from aerospace alloy and heat-treated prior to thread rollingand machining

Finish: Cad

If there is a permanent increase of