Description
The ARP 135-5202 main bolt kit is listed for Chevrolet Big Block WP Merlin II and III Iron Block. It secures the main bearing caps to the cylinder block, making fastener choice part of the bearing-clearance and machining plan for the engine build.
Technical Highlights
- Manufacturer part number: 135-5202
- Application/configuration: Chevrolet Big Block WP Merlin II and III Iron Block
Selection Guidance
The specified cap arrangement, block design and windage-tray requirements determine which kit is appropriate. A similar displacement or engine-family name does not establish that different main fastener kits are interchangeable.
Confirm the block, main-cap arrangement and any girdle or windage tray before ordering. Plan these checks before final machining and bearing selection.
Installation Considerations
Have the engine builder check main-bearing bore size and roundness with the intended fasteners installed at the specified preload. Align-hone if required, using the same hardware and lubricant intended for final assembly. Follow the kit-specific instructions for thread preparation, washer placement and tightening.