en-us Sat, 25 Apr 2026 12:48:07 GMT 184711340 https://motorheadmedia.com/long-block/184711340/boost-ready-370ci-ls-long-block-brodix-ls1-cnc-d-heads.html Looking for some serious power at a great price? Look no further! This 370ci boost-ready, cathedral port long block is designed to easily handle more than 1,000 hp. We are now offering this long block with high flowing, 13.5-degree valve angle, Brodix cathedral port, 6-bolt heads. Our process for machining these heads includes CNC porting and combustion chamber machining on our 5-axis with CNC valve job and bowl blend on our Newen CNC seat & guide machine (see Engine Machining playlist on…

]]> Engines: GM/Chevrolet: 8 Cylinder: Long Block Fri, 24 Apr 2026 07:50:04 GMT 184771296 https://motorheadmedia.com/long-block/184771296/dart-shp-ls-next-iron-long-block-copper-head-gaskets.html Our 427ci mechanical-roller LS iron long blocks come in two primary flavors: conventional and copper head gaskets. The Cometic MLX gaskets we use have a max boost rating of 35 psi. This long block has copper head gaskets with fuel hoops which can hold more boost and generate more horsepower. This iron LS long block also has numerous parts upgrades relative to its sister with conventional head gaskets. These include: - Upgrade from Callies Apex to Callies Magnum crank - Switch from Callies Ultra…

]]> Engines: GM/Chevrolet: 8 Cylinder: Long Block Wed, 22 Apr 2026 07:50:02 GMT 184781548 https://motorheadmedia.com/long-block/184781548/chev-sb-aluminum-engine-block-new-rotate-assy-available.html >> FOR SALE----"NEW".. "ALUMINUM" SB CHEV "BARE" Engine BLOCK ..NEW from Pro-Comp ..Had originally bought 3 of these and used 2 in Previous Builds, but now going to concentrate on BB Chev Engines. This NEW block is based on 9.025 Deck Height, Accepts 2 Piece Rear Main Seal, has rough bore size of 4.120" (4.125) and Features 4 BOLT MAIN CAPS "BILLET STEEL" on ALL 5 Positions with a MAIN STUDS INSTALLED the Mains accept the more Popular 350 Main…

]]> Engines: GM/Chevrolet: 8 Cylinder: Long Block Mon, 20 Apr 2026 07:50:03 GMT 184432014 https://motorheadmedia.com/long-block/184432014/rebuilt-ls7-for-sale.html I decided to go with a an LSX so this is for sale. Rebuilt by LME. This engine has new pistons, crank, and cam. 17k for everything in the pictures below. I do not want to ship this. I can email the build sheet. Thanks

]]> Engines: GM/Chevrolet: 8 Cylinder: Long Block Sun, 22 Feb 2026 08:45:10 GMT 184766467 https://motorheadmedia.com/long-block/184766467/427-ci-ls3-dart-block-frankenstein-m311-heads.html Dart LS block - Scat forged crank and rods - Wiseco forged 11.2 to 1 pistons - Franken stein Monster M311 11 degree heads - Jesel shaft rockers - Set up for carb, but would make some serious power with a turbo. Details in images.

]]> Engines: GM/Chevrolet: 8 Cylinder: Long Block Mon, 19 Jan 2026 13:26:33 GMT