Description
ARP Big Block Chevy 396-427 Wave-Loc High-Performance Rod Bolts
Upgrade the connecting rod hardware in your Big Block Chevrolet engine with the ARP Wave-Loc High-Performance Rod Bolts. Designed specifically for select early Big Block Chevy applications, these high-strength ARP fasteners feature ARP’s Wave-Loc design for secure positioning in the connecting rod and dependable rod cap retention in performance, racing and engine rebuild applications.
ARP part number 135-6422 is officially identified as the Big Block Chevy 396-427 Wave-Loc High-Performance Rod Bolt Kit. ARP specifically lists the 396, 402, 409 and 427 Big Block Chevrolet engine applications for this part number. This is a press-fit rod bolt design, and ARP recommends using the stretch method for proper installation.
Product Features:
- ARP High-Performance Connecting Rod Bolts
- Designed for Select Big Block Chevrolet Engines
- Fits Chevrolet 396 Big Block Applications
- Fits Chevrolet 402 Big Block Applications
- Fits Chevrolet 409 Big Block Applications
- Fits Chevrolet 427 Big Block Applications
- Wave-Loc Rod Bolt Design
- Press-Fit Rod Bolt Installation
- High-Strength ARP Fastener Construction
- Designed for Connecting Rod and Rod Cap Retention
- ARP Recommends the Stretch Method for Installation
- Suitable for Performance, Racing and Engine Rebuild Applications
Specifications:
| Manufacturer | ARP (Automotive Racing Products) |
| Part Number | 135-6422 |
| Product Type | Connecting Rod Bolt Kit |
| Fastener Type | Rod Bolt |
| Rod Bolt Design | Wave-Loc |
| Performance Series | High-Performance |
| Installation Type | Press Fit |
| Recommended Bolt Stretch | 0.0055″ – 0.0060″ |
| Torque If Stretch Gauge Is Unavailable | 55 ft-lbs with ARP Ultra-Torque |
| Engine Family | Chevrolet Big Block |
| Fastener Location | Connecting Rod |
ARP Engine Applications:
- Chevrolet – Big Block – 396
- Chevrolet – Big Block – 402
- Chevrolet – Big Block – 409
- Chevrolet – Big Block – 427
Fitment Notes:
- ARP officially lists this specific kit for Chevrolet Big Block 396, 402, 409 and 427 engine applications.
- Unlike ARP 135-6402, ARP 135-6422 is not broadly listed for 454, 496, 502 or 572 Big Block applications.
- Features ARP’s Wave-Loc high-performance rod bolt design.
- Uses a press-fit installation into the connecting rods.
- ARP recommends using the stretch method when tightening the rod bolts.
- Recommended rod bolt stretch is 0.0055″ to 0.0060″.
- If a stretch gauge is unavailable, ARP specifies 55 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant.
- ARP specifies that the connecting rods should always be resized after new rod bolts are installed.
- ARP recommends replacing any rod bolt that has permanent deformation or has increased in its non-torqued length by more than 0.001″.
- Verify the connecting rod configuration before installation.





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