The build started with new Chevrolet Performance LS3 block. Rocker Arms: investment-cast, roller trunnion If you prefer having an automatic transmission, make sure you have a vehicle with a 2,500-rpm-stall torque converter. Engines LS,LSA, LS3,L92,LT1,LT4,LT5,LS7,LS6,LS1,LS2,Coyote $1,950 pic hide this posting restore restore this posting. Given in inches First off, the LS3 motor is totally aluminum: from stem to stern. Before we get into the numbers-heavy specs, here are a few light facts to keep in mind as you are planning your build. Compression Ratio: 10.7:1 Now, normally the formal using stock guts would result in 6.2L (376 inches) of … The infamous small-block also utilized intake valves that were 9-percent larger than those found in the LS2, and 0.236 inch offset intake rocker arms. Engines LS,LSA, LS3,L92,LT1,LT4,LT5,LS7,LS6,LS1,LS2,Coyote $1,950 pic hide this posting restore restore this posting. LS3 Series Crate Engines The LS3 series is the go-to engine for vintage truck and muscle car resto-mods. Atop the LS3’s cylinder heads resided a high-flow intake manifold, which featured fewer points of restriction, and enabled a more direct route of passage for incoming air. Your email address will not be published. Classics like the big block Chevy 427, small block Chevy 350, Chrysler 426 Hemi, and the General Motors(GM) LS1 come to mind. Required fields are marked *, By using this form you agree with the storage and handling of your data by this website. The LS3 has gained a substantial reputation as the transplant engine of choice for many wishing to bolster their vehicle’s overall performance and sustained output. GM’s LS series of small-block engines is proof that continual refinement is the root of perfection. Tesla LS3 Swap | Photo Credit: YouTube Rich Rebuilds. Pistons: hypereutectic aluminum Shameless, yes. Almost immediately following the LS2’s introduction as the Corvette’s base engine in 2005, GM’s engineering department jumped headlong into the design of its ultimate successor. The LS3 utilized a cast-aluminum block (P/N 12623967), with six-bolt, cross-bolted main caps. Displacement 376 cu. The movies we grew up with told us we’d be teleporting and flying cars … 1965 – L78 – 6.5L (396CI) V8 Engine Guide: Specs, Features, & More, FOR SALE: One-Owner 1968 Corvette Convertible, This No Reserve ‘67 Corvette is the “Real Deal” per Barrett Jackson President, 1970 LT-1 Small-Block Engine Guide: Specs, Features, & More, 1969 350CI V8 Engine Guide: Specs, Features, & More, 1967 – L88 (427CI) Engine Guide: Specs, Features, & More. Don’t forget to upgrade your timing gear and cam sprocket. The stock heads have a port flow of 315 cfm, but a set of high-performance L92-ported heads can up that to 371 cfm. + 16 more images Upon reflection, one can easily draw parallels between the LS3, and GM’s small-block offerings of old, yet also visualize its lasting influence upon subsequent GM powertrain development. If GM isn’t worried about the block giving up the ghost at 630 bhp with a supercharger, you know you can add some other mods without worrying either. And converting an L92 to LS3 … The use of aluminum allows the engine to cool much faster than if it had an iron block and aluminum heads. The Gen-IV LS3 engine has a lot of potential in the right hands. A dual-mode exhaust package was also offered for C6 Corvettes powered by the LS3. Connecting Rods: powdered metal $30. Early in the LS3’s development, it was decided that the engine’s cylinder bores would be increased in diameter, over those featured in the LS2. That is why the first mod that many do is to install a 160 degree thermostat. During this period, GM had vested itself in the development of various efficiency-related engine campaigns, such as that of Active Fuel Management.