SKU: 300-6704 | UPC: 672036024505
ARP Custom Age625+ Rod Bolts for Chevrolet 396-454 Big Block Mark IV/V Engines
ARP Custom Age625+ rod bolt kit replaces stock fasteners in Chevrolet Big Block Mark IV and V engines from 396 to 454 cubic inches. These bolts provide consistent clamp load retention under high stress and heat for reliable engine operation. Built for enthusiasts rebuilding engines or adding boost and nitrous.
Key Features
- Custom Age625+ Alloy: Nickel-based material with 260,000 psi tensile strength resists fatigue in high-rpm and boosted applications
- Precision-Rolled Threads: 3/8-24 thread size with 7.800 inch length ensures full engagement and accurate repeatable torque
- 12-Point Head Design: .345 inch guard rails allow secure wrench grip for high torque without stripping
- Matched Hardware: Complete kit includes bolts for 8 rods plus washers for direct stock rod replacement
- ARP Engineering: Tested for Mark IV/V rods fits GM 396-454 engines used in cars trucks and drag racing
Product Notes
- Inspect rod bolt holes for wear before installation to ensure proper fit
- Apply ARP Ultra-Torque lubricant on threads and under bolt heads
- Kit weighs 1.25 lbs shipped in protective packaging to prevent damage
Installation Notes
- Professional installation recommended.
- Torque to 110 ft-lbs in specified sequence using ARP lube check ARP guide for details
- Compatible with stock Chevy Mark IV/V connecting rods re-torque after 100 miles
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1965-1990 | Chevrolet | C/K Pickup | 396 427 454 |
| 1965-1976 | Chevrolet | Corvette | Stingray |
| 1964-1987 | Chevrolet | Chevelle | Malibu SS |
| 1967-1981 | Chevrolet | Camaro | SS Z28 |
| 1965-1970 | Chevrolet | Impala | SS |
| 1971-1990 | GMC | C/K Pickup | 396 427 454 |
Why Choose ARP?
- Decades of experience supplying fasteners to NHRA and NASCAR teams
- Proprietary alloys outperform steel in strength and corrosion resistance
- USA-made with exact tolerances for GM engine applications
Frequently Asked Questions
- Q: Which engines does ARP 300-6704 fit?
A: Chevrolet Big Block Mark IV/V 396 402 427 454 c.i.d. 1965-1990 does not fit Gen VI 8.1L or LS engines - Q: What material are these rod bolts?
A: Custom Age625+ superalloy combines nickel chromium and molybdenum for 260,000 psi tensile strength and heat resistance up to 1000F - Q: What is the recommended torque and warranty?
A: Torque to 110 ft-lbs with ARP Ultra-Torque in 3 steps ARP offers quality guarantee contact manufacturer for claims
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Compact box 6 x 4 x 1 inches
- Weight: 1.25 lbs
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