Pro Series Ford 351W Main 2-Bolt Stud Kit

• Hardware set matched for ford 351w windsor small block v8 applications matching the listed main cap configuration

• Black finish/style supports a clean installed appearance

• Hardware set matched for Ford 351W Windsor small block V8 main cap applications, 2-bolt main configuration.

• Helpful for replacing missing, worn, or mismatched installation hardware

This main stud kit is manufactured from heat-treated 35 chromoly steel with a minimum tensile strength of 190,000 PSI, matched specifically for Ford 351W Windsor small block V8 engines with 2-bolt main caps. Stud-style fasteners thread permanently into the block and secure with a nut, providing more consistent clamping force than conventional main bolts.

Threads are rolled after heat treatment and finished in black oxide with an oil coating for corrosion resistance. This kit is a direct match for the 2-bolt main configuration and is a good fit for replacing missing, worn, or mismatched main cap hardware during a rebuild.

Applications
Fits Ford Small Block Windsor 351W (5.8L) engines with 2-bolt main caps, including Mustang, F-Series, Bronco, and other classic Ford small block V8 builds.

Installation
Torque in three steps: 30 ft-lbs, then 60 ft-lbs, then 105 ft-lbs. Confirm your block uses a 2-bolt main configuration before ordering — a separate 4-bolt kit is available for 4-bolt main 351W blocks.

What does this main stud kit fit?
Ford Small Block Windsor 351W (5.8L) engines with 2-bolt main caps.

What torque procedure does this kit use?
A 3-step sequence: 30 ft-lbs, then 60 ft-lbs, then 105 ft-lbs.

What material are these studs made from?
Heat-treated 35 chromoly steel with a black oxide finish and oil coating for corrosion resistance.

Why use studs instead of main bolts?
Studs thread permanently into the block and are secured with a nut, which can provide more consistent clamping force and improved main cap alignment compared to conventional main bolts.

Does this fit a 4-bolt main 351W block?
No — this kit is designed for 2-bolt main configurations. A separate 4-bolt stud kit is available for 4-bolt main 351W blocks; confirm your block's main cap style before ordering.

Why replace main studs during a rebuild?
Fresh main cap hardware helps ensure proper clamping force and reliable main bearing cap retention, especially important on higher-output or repeated-assembly builds.