Product Details

• Material: Alloy Steel
• Grade Rating: Grade 8
• Exterior Finish: Painted
• Manufacturer Grade: Grade 8
• Fastener Type: Stud Bolt
• Material: ‎Alloy Steel
• Grade Rating: ‎Grade 8
• Exterior Finish: ‎Painted
• Manufacturer Grade: ‎Grade 8
• Fastener Type: ‎Stud Bolt
• Brand: ‎ARP
• Thread Style: ‎Right Hand
• Item Hardness: ‎Grade 8
• Metal Type: ‎Aluminum
• UPC: ‎672036009977
• Global Trade Identification Number: ‎77
• Manufacturer: ‎ARP
• Model: ‎ARP 2354303
• Item Weight: ‎6.93 pounds
• Country of Origin: ‎USA
• Item model number: ‎235-4303
• Manufacturer Part Number: ‎2354303
• OEM Part Number: ‎235-4303
• Date First Available: November 23, 2005

• The choice of many top professional engine builders for their all-out competition powerplants
• Manufactured from a premium grade 8740 alloy that is heat-treated to 200,000 psi, which is considerably stronger than Grade 8 hardware
• Kit comes complete with premium quality parallel ground washers and compact 12-point style nuts
• 1000% better fatigue strength than many other studs
• Centerless ground to be as perfectly concentric as possible

ARP uses a premium grade 8740 alloy, which is rated far superior to “aircraft”
quality, for their Pro Series cylinder head studs. Each stud is placed
vertically in special racks and precisely heat-treated to 200,000 psi to
ensure complete heat penetration. Then the studs are centerless ground to make
them as close to perfectly concentric as possible, unlike lesser quality
studs. Because ARP studs are manufactured to such exacting tolerances, you
will note that gaskets and cylinder heads literally glide into position and
are perfectly aligned — something that won’t happen with inferior quality
head studs. By being thread rolled after heat-treat, these studs have about
1000% (that’s ten times) better fatigue strength than those studs that are
threaded prior to heat-treat (a very common industry practice). It costs a lot
more to do it this way, because it’s tough on tooling, but the results are
well worth the extra effort. This cylinder head stud kit comes complete with
premium quality parallel ground washers and compact 12-point style nuts for
select Chevrolet big block applications (Late Bowtie, Dart Merlin, iron and
aluminum Dart 360, Edelbrock, Dart Pro 1).