{"product_id":"arp-bb-ford-390-428-main-bolt-kit","title":"ARP Main Bolt Kit - Ford Big Block 390-428","description":"\u003cp\u003eThe ARP 155-5201 main bolt kit is listed for Ford Big Block 390-428. 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.\u003c\/p\u003e\u003ch3\u003eTechnical Highlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 155-5201\u003c\/li\u003e\n\u003cli\u003eApplication\/configuration: Ford Big Block 390-428\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSelection Guidance\u003c\/h3\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003cp\u003eConfirm the block, main-cap arrangement and any girdle or windage tray before ordering. Plan these checks before final machining and bearing selection.\u003c\/p\u003e\u003ch3\u003eInstallation Considerations\u003c\/h3\u003e\u003cp\u003eHave 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.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":68119298670842,"sku":"ARP155-5201","price":78.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/8db465d597edfe40ae8acd141216479cL.jpg?v=1794039163","url":"https:\/\/lgcracing.com\/products\/arp-bb-ford-390-428-main-bolt-kit","provider":"Legacy Racing","version":"1.0","type":"link"}