Scoggin-Dickey Raceshop is a leader in building the most high-tech, cutting edge, high-performance crate engines that you can’t just find anywhere. From their unique LS/LT short blocks (like the one we used in Project Redrum), to the complete engine packages like their W-I-L-D 540 cubic-inch ProCharged Big-Block, they have something for just about everyone.
But SDPC’s latest creating is a jaw-dropping powerhouse that isn’t for the weak-of-heart or the inexperienced. It cranks out, get this, a peak of 2,077 hp and 1,785 lb-ft of torque on SDPC’s in-house engine dyno. Of course, there’s quite a bit of work that goes into it, that goes beyond a cam swap and “slapping a turbo on it.”
SDPC L8T Foundation
Starting with a Chevrolet Performance L8T block that’s found in some 2020-22 Silverado HD trucks, it features several modifications from SDPC Race Shop that includes the removal of the DOD/AFM towers for additional weight savings — SDPC claims this alone is good for about 2-lbs off of the block weight. A set of steel main caps with upgraded bolts go into the recipe, as well as a wet sump oiling system.
Dual cylinder head dowels locators for LS/LT get factored in, and SDPC Raceshop cylinder wall sonic testing indicates a maximum overbore size of 4.145-inch (for NA applications), and 4.100-inch for those looking to immediately apply boost onto their L8T. The OEM bore is 4.065-inch.
This upgraded version of the L8T block is an SDPC exclusive, and falls under part number SDPC Part Number:Ā SDR98759.
SDPC Raceshop GEN-V L8T Twin Turbo Engine
New from the Scoggin-Dickey Raceshop is the GEN-V L8T based Twin Turbo engine. Building on the foundation of the GEN-V 6.6L L8T truck block, matching L8T production 3.86ā stroke crankshaft and CNC Ported LT4 heads, Precision Turbo & Engine Twin 76/85 mm turbos were added to produce a reliable 2,077 HP and 1,785 lbs./ft. of torque at at 32-psi. Fuel is supplied using a Holley Hi Ram with 220 lb./hr Injectors in a Port Fuel Injection configuration.
Components include:
-SDR98759 SDPC Raceshop modified L8T Engine Block with Steel caps. Honed to 4.070 ā dia. bore
-12701676 Chevrolet Performance GEN-V L8T 3.860ā Stroke Production Forged 58X Crankshaft.
–Callies Ultra Rods
–Wiseco 2618 Forged Aluminum Pistons w/ Total Seal Rings
– Camshaft; Competition Cams
-GM Bearings
-GM Gaskets
–ATI Balancer
–Moroso Oil Pan W/ Peterson External Oil Pump
-SDPC Raceshop SDR78973 CNC Ported Production GenV LT4 Cylinder Heads
-Compression Ratio; 9.5:1
-Production GM LT4 Valves; 2.130ā Ti Intake/1.590ā Stainless Exhaust
-GM Production 1.8:1 Rocker Arms w/CHE Trunnions
–Holley 102mm Throttle Body
–Shearer Fabrication Intercooler
-Waste Gates & Blow Off Valves by Precision Turbine & Engine
–Hooker Exhaust Manifolds
–MAXIMA 15W-50 Break in Oil
Rick Seitz is the owner and founder of GMEFI Magazine, and has a true love and passion for all vehicles. When he isnāt tuning, testing, or competing with the brandās current crop of project vehicles, heās busy tinkering and planning the next modifications for his own cars.
