SKU: 156-5001 | UPC: 672036038120
ARP Main Stud Kit for Ford 351C Side Bolts – Early Aluminum Block M8 (1970-1974)
ARP Main Stud Kit 156-5001 secures main caps in Ford 351C early aluminum engine blocks with M8 side bolts, common in 1970-1974 performance Mustangs, Torinos, and Gran Torinos. These studs prevent main cap walk and fretting, protect block threads from damage, and handle high-horsepower builds with 190,000 PSI strength. Kits include all necessary washers and nuts for reliable assembly.
Key Features
- 8740 Chrome Moly Steel: Heat-treated in-house to 190,000 PSI tensile strength to withstand extreme engine loads
- Precision J-Form Threads: Rolled after heat treatment for 2000% greater thread strength than standard fasteners
- Hardened Washers and Nuts: Parallel-ground washers and quality nuts ensure even clamping force and secure fit
- Eliminates Cap Walk: Stops main cap movement and fretting to maintain bearing alignment under stress
- Black Oxide Finish: Provides corrosion resistance for long-term durability in engine environments
Product Notes
- Confirm early aluminum block with M8 side bolts prior to installation
- Designed for performance rebuilds and racing applications
- Kit weighs 2.1 lbs and ships in 9 x 6 x 2 inch box
Installation Notes
- Professional installation recommended.
- Torque to ARP specifications using ARP moly lubricant for accurate clamping
- Inspect block threads and chase if needed for proper stud seating
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1970-1974 | Ford | Mustang | 351C Aluminum Block Early M8 |
| 1970-1974 | Ford | Torino | 351C Aluminum Block Early M8 |
| 1972-1974 | Ford | Gran Torino | 351C Aluminum Block Early M8 |
Why Choose ARP?
- ARP fasteners power professional racing teams and engine builders
- In-house heat treatment ensures consistent high strength
- Precision rolled threads deliver dependable clamping force
Frequently Asked Questions
- Q: What Ford engines fit this main stud kit?
A: Designed for 1970-1974 Ford 351C early aluminum blocks with M8 side bolts, used in Mustang, Torino, and Gran Torino performance builds - Q: What material and strength rating?
A: 8740 chrome moly steel heat-treated to 190,000 PSI tensile with black oxide finish - Q: What warranty coverage?
A: ARP warrants against defects in materials and workmanship when properly installed and maintained
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure retail box 9 x 6 x 2 inches
- Weight: 2.1 lbs
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