{"title":"Extra Clearance","description":null,"products":[{"product_id":"acl-5m909hx-std-chevrolet-sbc-main-bearings-extra-001-clearance","title":"ACL 5M909HX-STD Chevrolet SBC Main Bearings | Extra .001″ Clearance","description":"\u003cp\u003eACL 5M909HX-STD Performance Race Series main bearing set for Chevrolet small-block engines. Tri-metal construction, 1\/2 groove, and .001 in. extra clearance. Sold as a set of 5.\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: ACL Race Series Performance Engine Bearings\u003c\/li\u003e\n\u003cli\u003eManufacturer's part number: 5M909HX-STD\u003c\/li\u003e\n\u003cli\u003ePart type: Main Bearings\u003c\/li\u003e\n\u003cli\u003eProduct line: ACL Performance Race Series Main Bearing Sets\u003c\/li\u003e\n\u003cli\u003eApplication: Chevrolet Small Block\u003c\/li\u003e\n\u003cli\u003eBearing usage: Performance\u003c\/li\u003e\n\u003cli\u003eEngine crankshaft undersize (in.): 0.001 in.\u003c\/li\u003e\n\u003cli\u003eEngine crankshaft undersize (mm): 0.025mm\u003c\/li\u003e\n\u003cli\u003eGrooved bearing: Yes\u003c\/li\u003e\n\u003cli\u003eGroove location: Upper\u003c\/li\u003e\n\u003cli\u003eGroove style: 1\/2\u003c\/li\u003e\n\u003cli\u003eThrust bearing oversize: Stock\u003c\/li\u003e\n\u003cli\u003eBearing material: Tri-metal, copper-lead alloy\u003c\/li\u003e\n\u003cli\u003eQuantity: Sold as a set of 5\u003c\/li\u003e\n\u003cli\u003eNotes: Fits engines with housing bores of 2.100 in.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRace Series Construction\u003c\/h2\u003e\n\u003cp\u003eMulti-layered tri-metal copper alloy construction combines high strength with seizure resistance. Precision manufacturing helps maintain consistent clearances. Design features include extended grooves, increased crush, bearing eccentricity, and enlarged inside-diameter chamfers.\u003c\/p\u003e\n\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\n\u003cp\u003eConfirm the part number, engine application, housing bore, journal dimensions, and required assembled clearance for your build. The supplied specifications above list both extra clearance and crankshaft undersize terminology; confirm the correct sizing with ACL before ordering. Extra oil clearance is not the same as a crankshaft undersize.\u003c\/p\u003e","brand":"ACL","offers":[{"title":"Default Title","offer_id":67716973986105,"sku":"ACL-5M909HX-STD","price":84.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0102\/9082\/3219\/files\/aclmainbearingpic_b497cf7a-4caf-4b43-ab90-d02658536b84.png?v=1792429501"},{"product_id":"5m1010hx-std-race-main-bearing-set-extra-001-in-oil-clearance-standard-ford-351ci-5-8l-cleveland-v8-ohv-2v","title":"ACL 5M1010HX-STD Ford 351 Cleveland Main Bearings | Extra .001″ Clearance","description":"\u003cp\u003eACL 5M1010HX-STD Race Series main bearing set for Ford 351ci (5.8L) Cleveland V8 engines. Standard size with an extra .001 in. of oil clearance. Sold as a set of 5.\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: ACL\u003c\/li\u003e\n\u003cli\u003eManufacturer's part number: 5M1010HX-STD\u003c\/li\u003e\n\u003cli\u003eProduct type: Race Main Bearing Set\u003c\/li\u003e\n\u003cli\u003eApplication: Ford 351ci (5.8L) Cleveland V8 OHV 2v\u003c\/li\u003e\n\u003cli\u003eSize: Standard\u003c\/li\u003e\n\u003cli\u003eOil clearance: Extra .001 in.\u003c\/li\u003e\n\u003cli\u003eQuantity: Set of 5\u003c\/li\u003e\n\u003cli\u003eGrade type: Performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWidth: 0.88 in.\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 2.9425 in.\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 2.9417 in.\u003c\/li\u003e\n\u003cli\u003eShaft Diameter: 2.7492 in.\u003c\/li\u003e\n\u003cli\u003eShaft Diameter: 2.7484 in.\u003c\/li\u003e\n\u003cli\u003eMaximum Wall Thickness: 0.0957 in.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eACL Race Series\u003c\/h2\u003e\n\u003cp\u003eACL Race Series bearings combine design, metallurgy, and precision manufacturing for performance engine applications.\u003c\/p\u003e\n\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\n\u003cp\u003eConfirm the part number, engine application, journal dimensions, and required assembled clearance for your build. This listing specifies a Ford 351 Cleveland application; do not select by displacement alone. Extra oil clearance is not the same as a crankshaft undersize.\u003c\/p\u003e","brand":"ACL","offers":[{"title":"Default Title","offer_id":67717020221753,"sku":"ACL-5M1010HX-STD","price":104.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0102\/9082\/3219\/files\/aclmainbearingpic_03885023-b4f2-4e7a-8434-de2dee3a2005.png?v=1792430666"},{"product_id":"acl-5m7298hx-std-gm-ls-main-bearings","title":"ACL 5M7298HX-STD GM LS Gen III\/IV Main Bearings | Extra .001″ Clearance","description":"\u003cp\u003eACL 5M7298HX-STD Race Series main bearing set for GM LS Gen III\/IV engines, featuring extra .025 mm \/ 0.001 in. oil clearance.\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: ACL\u003c\/li\u003e\n\u003cli\u003eManufacturer's part number: 5M7298HX-STD\u003c\/li\u003e\n\u003cli\u003eProduct type: Race Main Bearing Set\u003c\/li\u003e\n\u003cli\u003eApplication: GM LS Gen III\/IV\u003c\/li\u003e\n\u003cli\u003eOil groove: 70-Deg Oil Groove (as supplied)\u003c\/li\u003e\n\u003cli\u003eOil clearance: Extra .025 mm \/ 0.001 in.\u003c\/li\u003e\n\u003cli\u003eGrade type: Performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWidth: 1.028 in.\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 2.7515 in.\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 2.7509 in.\u003c\/li\u003e\n\u003cli\u003eShaft Diameter: 2.5593 in.\u003c\/li\u003e\n\u003cli\u003eShaft Diameter: 2.5588 in.\u003c\/li\u003e\n\u003cli\u003eMaximum Wall Thickness: 0.0952 in.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eACL Race Series\u003c\/h2\u003e\n\u003cp\u003eACL Race Series bearings combine design, metallurgy, and precision manufacturing for performance engine applications.\u003c\/p\u003e\n\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\n\u003cp\u003eConfirm the part number, engine application, oil-groove specification, journal dimensions, and required assembled clearance for your build. Extra oil clearance is not the same as a crankshaft undersize.\u003c\/p\u003e","brand":"ACL","offers":[{"title":"Default Title","offer_id":67717207490873,"sku":"ACL-5M7298HX-STD","price":153.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0102\/9082\/3219\/files\/aclmainbearingpic_75e8a132-9394-4d01-9db1-7736d18e2af3.png?v=1792432143"},{"product_id":"clevite-ms829hx-chevrolet-bbc-main-bearings","title":"Clevite MS829HX Chevrolet BBC Main Bearings | Extra .001″ Clearance","description":"\u003cp\u003eClevite MS829HX H-Series main bearing set for Chevrolet big-block engines. Tri-metal TM-77 construction with a 1\/2 groove and .001 in. extra clearance. Sold as a set of 5.\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: Clevite Engine Parts\u003c\/li\u003e\n\u003cli\u003eManufacturer's part number: MS829HX\u003c\/li\u003e\n\u003cli\u003eProduct line: Clevite H-Series Main Bearings\u003c\/li\u003e\n\u003cli\u003eApplication: Chevrolet Big Block\u003c\/li\u003e\n\u003cli\u003eBearing usage: Performance\u003c\/li\u003e\n\u003cli\u003eEngine crankshaft undersize (in.): Stock\u003c\/li\u003e\n\u003cli\u003eEngine crankshaft undersize (mm): Stock\u003c\/li\u003e\n\u003cli\u003eGrooved bearing: Yes\u003c\/li\u003e\n\u003cli\u003eGroove location: Upper\u003c\/li\u003e\n\u003cli\u003eGroove style: 1\/2\u003c\/li\u003e\n\u003cli\u003eThrust bearing oversize: Stock\u003c\/li\u003e\n\u003cli\u003eBearing material: Tri-metal, TM-77\u003c\/li\u003e\n\u003cli\u003eQuantity: Sold as a set of 5\u003c\/li\u003e\n\u003cli\u003eClearance note: Thinner than standard for .001 in. extra clearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eH-Series Construction\u003c\/h2\u003e\n\u003cp\u003eDeveloped primarily for NASCAR racing, Clevite H-Series main bearings are also suited to other competition engines, especially those operating at medium-to-high revs. Steel backings, selected overlays, a high crush factor, and medium eccentricity support performance applications.\u003c\/p\u003e\n\u003cp\u003eEnlarged side chamfers provide crank-fillet clearance. The bearings are made without flash plating for better seating.\u003c\/p\u003e\n\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\n\u003cp\u003eConfirm the part number, engine application, journal dimensions, and required assembled clearance for your build. This MS829HX set provides .001 in. extra clearance; extra oil clearance is not the same as a crankshaft undersize.\u003c\/p\u003e","brand":"Clevite","offers":[{"title":"Default Title","offer_id":67717215387961,"sku":"CLE-MS829HX","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0102\/9082\/3219\/products\/CLEVITE_240x240_bdadc4f4-4793-448c-baf7-cfcd6562c3a8.png?v=1570561254"},{"product_id":"acl-5m7298hxx-std-chevrolet-ls-main-bearings","title":"ACL 5M7298HXX-STD Chevrolet LS Main Bearings | Extra .002″ Clearance","description":"\u003cp\u003eACL 5M7298HXX-STD Race Series main bearing set for Chevrolet LS engines, with .002 in. extra clearance and tri-metal construction for performance engine applications.\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: ACL\u003c\/li\u003e\n\u003cli\u003eManufacturer's part number: 5M7298HXX-STD\u003c\/li\u003e\n\u003cli\u003eProduct type: Race Series Main Bearing Set\u003c\/li\u003e\n\u003cli\u003eApplication: Chevrolet LS\u003c\/li\u003e\n\u003cli\u003eExtra clearance: .002 in.\u003c\/li\u003e\n\u003cli\u003eConstruction: Tri-metal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRace Series Features\u003c\/h2\u003e\n\u003cp\u003eACL Race Series bearings combine design, metallurgy, and manufacturing processes to support high-performance and high-RPM engine operation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-strength overlay plate with reduced thickness for fatigue resistance\u003c\/li\u003e\n\u003cli\u003eIncreased bearing crush for housing retention\u003c\/li\u003e\n\u003cli\u003eNo flash plating on bearing backs, supporting heat transfer and housing grip\u003c\/li\u003e\n\u003cli\u003eIncreased eccentricity to compensate for bore distortion and support oil-film formation at high RPM\u003c\/li\u003e\n\u003cli\u003eTight, consistent wall tolerances for stable bearing clearances\u003c\/li\u003e\n\u003cli\u003eEnlarged inside-diameter chamfers to accommodate large-fillet-radius performance crankshafts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\n\u003cp\u003eConfirm the part number, engine application, groove specification, journal dimensions, and required assembled clearance for your build. This listing is for the 5M7298HXX-STD set with .002 in. extra clearance, not the HX version with .001 in. extra clearance. Extra oil clearance is not the same as a crankshaft undersize.\u003c\/p\u003e","brand":"ACL","offers":[{"title":"Default Title","offer_id":67717246091577,"sku":"ACL-5M7298HXX-STD","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0102\/9082\/3219\/files\/aclmainbearingpic_5c2425ab-4fda-4bdf-b06c-75cb850a2fc2.png?v=1792434314"}],"url":"https:\/\/3vperformance.com\/collections\/brg-size_extra-clearance\/engine-family_bbc.oembed","provider":"3V Performance","version":"1.0","type":"link"}