SKU: 134-2501 | UPC: 672036001728
ARP Chevrolet Small Block Harmonic Damper Bolt Kit – Fits 1955+ SBC V8
Secure the harmonic damper on your Chevrolet small block V8 engine with ARP 134-2501 bolt kit. This single high-strength bolt fits 262 to 400 cubic inch small blocks from 1955 to current applications in cars trucks and performance builds. It delivers consistent clamp load at 250 ft-lbs torque to handle high horsepower and RPM without slippage.
Key Features
- ARP2000 Alloy Steel: Forged material rated at 220,000 PSI tensile strength resists fatigue in boosted and high-rev engines
- 12-Point Head Design: Provides secure wrench grip for accurate torquing and prevents rounding during service
- Precision-Rolled Threads: Ensures full thread engagement and repeatable torque values for dependable retention
- 3/8-24 x 3.400 Inch Size: Direct replacement for OEM bolt on SBC crankshaft nose with black oxide finish for rust protection
- Application-Specific Engineering: Tested for Chevy small block harmonic balancers in street strip and circle track use
Product Notes
- Inspect crankshaft threads for damage prior to install
- Store in dry area to maintain thread integrity
- Packed in ARP branded box with instructions
Installation Notes
- Professional installation recommended.
- Torque to 250 ft-lbs using ARP Ultra-Torque lubricant on threads and under head
- Fits all traditional Gen I small block Chevy crankshafts 262-400 CID not for LS engines
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1955-1982 | Chevrolet | Corvette | All V8 |
| 1964-1972 | Chevrolet | Chevelle | All V8 |
| 1967-2002 | Chevrolet | Camaro | All V8 |
| 1960-1987 | Chevrolet | C10 Pickup | All V8 |
| 1968-1982 | Chevrolet | Impala | All V8 |
| 1955+ | Chevrolet | Small Block Swap | 262-400 CID |
Why Choose ARP?
- Decades of use in NHRA IHRA and NASCAR racing
- 8740 and 2000 series alloys outperform stock fasteners
- CNC machining and heat treatment for exact tolerances
Frequently Asked Questions
- Q: Will this fit Gen III/IV LS engines?
A: No ARP 134-2501 is designed for traditional small block Chevy 262-400 CID only use 234-2501 for LS applications - Q: What is the bolt material and finish?
A: ARP2000 alloy steel with black oxide coating for strength and corrosion resistance - Q: What torque spec and lube to use?
A: 250 ft-lbs with ARP Ultra-Torque on threads and flange recheck after 100 miles or heat cycle
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: ARP box 4 x 3 x 1 inches
- Weight: 0.15 lbs
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