{"product_id":"bmp-086515-aluminum-engine-block-chevy-ls-block-9-240-deck-4-115-bore-billet-caps","title":"BMP 086515 - Aluminum Engine Block Chevy LS Block 9.240 Deck, 4.115 Bore, Billet Caps","description":"\u003ch1\u003e\u003cspan style=\"text-decoration: underline;\"\u003eOne in stock!\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch1\u003e\u003c\/h1\u003e\n\u003ch1\u003eBill Mitchell Products LS Aluminum Engine Block Chevy LS Series Std Mains, 9.240\"Deck, 4.115\" Bore, Billet Caps, Standard Cam(includes, Screw in Freeze plugs, Cam plug, All dowel pins and Pipe plugs) 086515\u003c\/h1\u003e\n\u003ch1\u003e\u003cstrong\u003eBlock Specifications:\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eBlock Applications:\u003c\/strong\u003e The BMP aluminum blocks are designed to be a high Performance replacement for the GM LS series blocks.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eCasting Number:\u003c\/strong\u003e BMP-045A ( 9.800” ) \/ BMP-045B ( 9.240” )\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eBlock Material:\u003c\/strong\u003e Aluminum 357T6 aluminum alloy\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eBlock Weight:\u003c\/strong\u003e 135lbs w\/ caps and sleeves\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eDeck Height:\u003c\/strong\u003e 9.240” (Standard Chevrolet) or 9.800”\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eDeck Thickness:\u003c\/strong\u003e .600 minimum.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eCam Bearings:\u003c\/strong\u003e Durabond Part # CH-23 or equivalent. As of 2024, REV.2 Durabond Part# GM25, GMP25, GM25T\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e When installing, BE SURE the oil hole in the bearings aligns with the oil feed hole\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eMain Bearings:\u003c\/strong\u003e Standard LS main bearings.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eMain Caps:\u003c\/strong\u003e All five main caps are four bolt and cross bolted billet steel caps. The cap studs are 7\/16” thread. The outer cross bolts are 8mm x 1.25” thread. Torque specs on studs are: 75 ft. lbs. and 30lbs on cross bolts with oil.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eLifters:\u003c\/strong\u003e Standard GM tie bar lifters\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eLifter Bores:\u003c\/strong\u003e Standard location, Indexed. Lifter bore size is standard Chevy diameter .8437”.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eBore Center: \u003c\/strong\u003eStandard 4.400\"\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eCylinder Bores:\u003c\/strong\u003e 3.990” or 4.115” standard. Cylinder bores are of a Siamese design. Sleeves are a replaceable, centrifugal cast ductile steel pressed in with a .001” to -.002” fit. Sleeves do not protrude into the water and are considered to be a DRY sleeve.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eCylinder Wall Thickness:\u003c\/strong\u003e Sleeve OD on all LS blocks are 4.280”+ approximately .200” aluminum surrounding it (except between the cylinders of course). These blocks can safely be bored to 4.165” but the engine builder must make that final call based on the application the engine is being built for.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eFreeze Plugs:\u003c\/strong\u003e All aluminum blocks include screw in freeze plugs. Torque to 35lbs with anti seize on threads and o-rings BMP part# 701645.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eDistributors:\u003c\/strong\u003e N\/A\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eOil System Features:\u003c\/strong\u003e Priority main oiling. Block has provisions to be converted to a dry sump oiling system.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eStroke Clearance:\u003c\/strong\u003e Will accept a 4.250” stroke crank with steel rods. Larger strokes or aluminum rods may require additional clearance and rerouting the oil to the outside of the block. Oil Restrictors: Due to the very efficient oiling system of the BMP LS aluminum block a std volume oil pump should be used and in addition to this oil restrictors of .150” should be the minimum starting point to control how much oil pressure your engine ultimately has. This is only a recommendation and should ultimately be the decision of the engine builder.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eFiltration:\u003c\/strong\u003e Stock. Barbell not utilized to divert oil to filter. The block simply uses a 3\/8\"NPT plug  \u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eOil Pan Rails:\u003c\/strong\u003e Solid (stock width) can be clearanced for strokers. When clearance is required for strokes larger then 4.500”, depending on the connecting rod used the notch may protrude into the internal oil passage but can be corrected by an external oil line utilizing the tapped holes in the side of the block.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eCylinder Head Bolt Holes:\u003c\/strong\u003e Standard GM LSX Bolt Pattern. Use of World Products LS7 heads using the extra bolt holes will need modifications to utilize the extra bolts.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eHead Gaskets: \u003c\/strong\u003eFelpro 26473L\/26473R. Original World Warhawk gaskets will work but will need a steam hole added Felpro 1185 or Cometic H1067SP####. Cometic are special order. a number of thicknesses are available.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eCamshaft:\u003c\/strong\u003e Std camshaft location\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eFuel Pump:\u003c\/strong\u003e N\/A\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eRear Main Seal Block Cover Plater:\u003c\/strong\u003e Stock GM rear cover (GM Part # 12572014, 12556105). Must pay attention to gasket fitment around the inner primary oil passage. We recommend the Cometic Coated gasket part# EC1310SP1060AFM.  \u003c\/h1\u003e\n\u003ch1\u003eCAUTION\u0026gt; the left side inner most bolt hole is tapped very shallow due to oil passage. You must shorten the bolt. DO NOT MAKE THE HOLE DEEPER!\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eStarter:\u003c\/strong\u003e Std Starter\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eMotor Mounts:\u003c\/strong\u003e Drilled and tapped for both stock mounts in OEM locations and conventional SBC for a retro fit into older cars. Bell Housing Pattern: Stock GM \u003cstrong\u003eGear\u003c\/strong\u003e\n\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eDrives \u0026amp; Belt Drives:\u003c\/strong\u003e N\/A\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eAccessory Brackets:\u003c\/strong\u003e Due to OE block design variations over the years some of the bolt holes in the BMP block may not be drilled or tapped deep enough to allow factory fasteners to completely seat against the heads. It is advisable before final assembly to verify whether the OE fasteners need alterations.\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cstrong\u003eWater Pump:\u003c\/strong\u003e Stock LS  \u003c\/h1\u003e","brand":"BMP","offers":[{"title":"Default Title","offer_id":67566222934329,"sku":"BMP-086515","price":6700.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0102\/9082\/3219\/files\/BMPLS1.png?v=1790704408","url":"https:\/\/3vperformance.com\/products\/bmp-086515-aluminum-engine-block-chevy-ls-block-9-240-deck-4-115-bore-billet-caps","provider":"3V Performance","version":"1.0","type":"link"}