SKU: 134-5202 | UPC: 672036001865
ARP Main Bolt Kit for Chevrolet Large Journal – Hex Nut 1965-2001 Big Block
ARP main bolt kit 134-5202 delivers precision fasteners for Chevrolet big block V8 engines featuring large 2.625-inch journal mains including 427 and 454 displacements. Designed for competition engines these bolts secure main caps with exceptional strength handling extreme loads in high-horsepower builds. Rolled threads and premium materials ensure long-term durability in racing applications across trucks cars and performance vehicles from 1965 to 2001.
Key Features
- 8740 Chrome Moly Steel: Forged construction provides high tensile strength rated up to 190,000 PSI for Pro Series reliability in demanding environments
- Rolled Threads After Heat Treat: Increases fatigue strength by 2000% over bolts threaded before heat treating for superior resistance to failure
- Reduced Wrenching Head: Allows easy access in tight engine bays while maintaining secure torque application
- Large Underhead Radius: Distributes clamping load evenly reducing stress concentrations on main caps
- Hardened Washers Included: Parallel-ground washers ensure flat seating and consistent preload on every fastener
Product Notes
- Application-specific for Chevy large journal mains verify engine block compatibility before installation
- Torque to ARP specifications using ARP Ultra-Torque lubricant for accurate clamping force
- Ships in protective packaging to prevent thread damage during transit
Installation Notes
- Professional installation recommended.
- Clean main cap threads and bores thoroughly resize caps if necessary for optimal fit
- Compatible with stock and aftermarket main caps uses 1/2-20 x 5.100 inch bolts
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1966-1969 | Chevrolet | Camaro | 427 |
| 1965-1982 | Chevrolet | Corvette | 427/454 |
| 1966-1972 | Chevrolet | Chevelle | 427/454 |
| 1966-1980 | Chevrolet | C/K Pickup | 427/454 |
| 1966-1970 | Chevrolet | Impala | 427/454 |
| 1969-1974 | Chevrolet | Blazer | 427 |
| 1991-2000 | Chevrolet | C/K Pickup | 454 Gen V |
Why Choose ARP?
- Trusted by professional engine builders for decades in NHRA NASCAR and drag racing
- USA-made quality with exacting tolerances for consistent performance
- Engineered specifically for high-stress competition preventing common fastener failures
Frequently Asked Questions
- Q: Does this kit fit small journal Chevy big blocks?
A: No this 134-5202 kit is for large journal 2.625-inch mains only use ARP 134-5201 for small journal 396/402 engines - Q: What is the material grade and strength rating?
A: Forged from 8740 chrome moly steel with black oxide finish Pro Series rated at 190,000 PSI tensile strength - Q: What torque specs should I use?
A: Follow ARP instructions typically 110 ft-lbs with ARP lubricant always check latest ARP tech bulletin for your setup
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Compact box 6 x 4 x 2 inches
- Weight: 1.95 lbs
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