LIGHTNING FORCE PERFORMANCE
lightningforceperformance.***


*Main Studs*
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 are manufactured from 8740 chrome moly steel, heat-treated in-house to 200,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others.
INSTALLATION METHOD FOR MAIN STUD KITS Part Numbers: 156-5401 & 156-5403 Application: Ford 4.6L & 5.4L Modular V8 
1. To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase the threads if necessary with ARP Thread Chaser, part number 912-0003 (M10 X 1.5). 
2. Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages, plus proper fit, length and dimension. 3. Screw the studs into the block “HAND TIGHT ONLY”. NOTE: LOCTITE MAY BE USED IF A PERMANENT MOUNTING OF THE STUDS IS PREFERRED. THE FASTENERS, HOWEVER, MUST BE TORQUED PRIOR TO THE LOCTITE SETTING UP. 
4. Install the main caps and check for binding or misalignment. 
5. Lubricate the stud threads, nuts and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight. ARP recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil or other low quality lubricants are used. PRELOAD (TORQUE) RECOMMENDATIONS 
6. Following the manufacturers recommended torque sequence tighten the nuts in three equal steps to 60 ft lbs with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. FOOTNOTE: When changing from factory fasteners to high strength fasteners, clamping force and tolerances will change, therefore it will be necessary to check the main bearing bores for proper size and out of round condition after installation of the studs and align hone the cylinder block if necessary. The main bores should always be align honed using the same fasteners and lubricant which will be installed during final engine assembly at the recommended preload. 
***shipping to AK, HI or Puerto Rico may require us to charge you shipping depending on the weight and if it can be shipped via USPS.***