As the leaves start to change colors and a chill enters the air, you know the season of gift-giving is upon us. So we figured, what better gift to give one lucky EngineLabs reader than to give away an LME-built 1,500-horsepower Vortech-supercharged LS engine? Besides getting an awesome engine, if you happen to be attending the PRI Show in Indianapolis, Indiana December 9-11th, you can stop by our booth and watch it be assembled live, on the show floor. And not only can you register to win at our PRI booth (#951) while you are there, but you can get additional chances to win by visiting our partners’ booths throughout the show. (Registration is now live and you can enter to win HERE.)
Using a formula very similar to the engine they crafted for the LS vs Coyote Shootout Part 2, LME will be starting with a Dart SHP iron engine block. LME will be machining the block to a final bore size of 4.125 inches along with all of their other standard finish machining. From there, a Callies Magnum 4.00-inch stroke, fully counterweighted wet-sump crankshaft will bring the displacement to 427 cubic inches. The billet main caps will be secured in place by an ARP 8740 chromoly main stud kit.
Attached to the Callies crankshaft will be a set of Callies Enforcer-series I-beam connecting rods. Measuring 6.125 inches long and forged from 4330V steel, the Enforcer rods will connect a set of Diamond Pistons 2,000-horsepower-capable Race-Series forged 2618 pistons via a set of H-13 tool-steel wrist pins from Trend Performance.
Total Seal piston rings will keep all the cylinder pressure where it belongs. Clevite H-series main and rod bearings, along with a set of DuraBond camshaft bearings, will keep everything rotating smoothly, while an ATI Super Damper will manage engine harmonics. Keeping the engine lubricated will be a Melling 10296 gerotor oil pump drawing oil from a Milodon low profile oil pan, designed to clear the 4.00-inch stroke crank.
Big Boy Top End
Topping off the 427-cube short-block is a set of the same Brodix BR7 castings that were on the LS vs. Coyote 2 engine. That is to say, the six-bolt castings will undergo the same full LME CNC machining treatment to achieve over 400cfm of flow. Ferrea 2.200-inch titanium intake valves and 1.615-inch Inconel exhaust valves will be controlled by LME’s dual valvespring kit with titanium retainers. Unlike the LS vs Coyote engine, this one will have its heads secured by ARP’s 1/2-inch head stud kit, with six fasteners per cylinder and Cometic MLX head gaskets for maximum sealing.
A custom Comp Cams camshaft ground to LME’s specifications will move the COMP reduced-travel hydraulic-roller tie-bar lifters. In turn, the 3/8 heavy-wall pushrods from Manley will actuate the Comp LS7 BSR shaft rocker kit in order to translate cam motion into valve motion.
Topping off the combination is the new FAST LSX-HR 103 mm intake manifold, paired with a FAST 103 mm Big Mouth throttle body. A set of Holley 160 lb/hr fuel injectors will provide fuel, while a set of Holley EFI Smart Coils will handle the spark. A Holley EFI Terminator X designed for a 58x reluctor wheel will control everything once assembled, and will allow the new owner of the giveaway engine complete control of the combination.
We wouldn’t want to give away an engine without providing the owner with boost. Providing the pressurization will be a Vortech V-30 94A supercharger with a cog drive belt system, capable of moving more than 1,950 cfm of air into the engine. If the winner wants something a little less radical with a serpentine belt system, A V-7 YSi-B unit, rated at a peak output of 1,950 cfm can be substituted.
Winning the Beast
Once the engine is completed at the PRI show, it will be shipped back to LME where the team will break the engine in on the engine dyno before tuning it for the blower the winner selects and providing the winner the engine and a dyno sheet and tuneup for the package.
We’ll be announcing how to enter the contest at this year’s SEMA Show on November 2, 2021, so make sure that you check back here for all the details on how to enter to win, as well as how to gain extra entries to the giveaway.
EngineLabs x LME Give Away Engine Specs
|Builder:||Late Model Engines|
|Total Displacement:||427 cubic inches (7.0L)|
|Bore x Stroke:||4.125-inches x 4.00-inches|
|Block:||Dart SHP Iron Standard Deck|
|Crankshaft:||Callies Magnum, center-counterweighted 4.00-inches; wet-sump|
|Rods:||Callies Enforcer 6.125-inch, forged 4330V I-beam|
|Pistons:||Diamond Pistons 2K series w/ lateral gas ports|
|Oil Pump:||Melling 10296|
|Oil Pan:||Milodon low profile|
|Water Pump:||Meziere 35gph electric|
|Timing Set:||Roll Master Double Roller timing set w/Torrington bearing.|
|Fasteners:||ARP main stud kit; ARP head stud kit|
|Cylinder Heads:||Brodix BR7 castings|
|Port Work:||Complete LME CNC porting, with final hand-blending to flow 400 cfm|
|Valves:||Ferrea 2.200-inch titanium intake, 1.615-inch Inconel exhaust|
|Valve Springs:||LME polished dual valvespring kit w/ titanium retainers and Viton seals|
|Camshaft:||Comp Cams hydraulic-roller, custom specs by LME|
|Lifters:||Comp short-travel tie-bar hydraulic roller|
|Rockers:||Comp Cams LS7 BSR shaft rocker system|
|Pushrods:||Trend Performance 3/8-inch one-piece heavy-wall|
|EFI System:||Holley Terminator X (58x harness kit)|
|Injectors:||Holley 160 lb/hr|
|Throttle Body:||FAST 103mm Big Mouth|
|Intake Manifold:||FAST 103mm LSX-HR|
|Power Adder:||Vortech V-30 94mm centrifugal supercharger (V-7 Ysi-B optional)|