Crate Engine, Lokar, LS3 495 HP, Tri-Power, BBC Style Valve Covers

LS3 495-HP Tri-Power Crate Engine by Lokar®

495-hp LS3 combines modern Holley engine management with Tri-Power styling and Big Block-style valve.

Lokar® Modern Classic Series Tri-Power crate engine begins with a new GM 376ci (6.2L) LS3 rated at 495 hp and 473 lb-ft. The 10.7:1 aluminum-block LS uses L92-style heads, a nodular-iron crankshaft and Hot Cam hydraulic roller. This version adds Big Block-style valve covers and the Tri-Power visual package while retaining modern Holley engine management, coils, balancer, exhaust manifolds and flexplate.

Additional Technical Specifications • GM Part Number: 19369333 • Engine Type: LS-Series Gen-IV Small-Block V-8 • Displacement (cu. in.): 376 (6.2L) • Bore x Stroke (in.): 4.065 x 3.622 (103.25 x 92 mm) • Block (P/N 12623967): Cast-aluminum with six-bolt, cross-bolted main caps • Crankshaft (P/N 12597569): Nodular iron • Connecting Rods (P/N 12649190): Powdered metal • Pistons (P/N 19207287): Hypereutectic aluminum • Camshaft Type (P/N 88958753): Hydraulic roller • Valve Lift (in.): .525 intake / .525 exhaust • Camshaft Duration (@.050 in.): 219° intake / 228° exhaust • Cylinder Heads (P/N 12629063): Aluminum L92-style port; “as cast” with 68-cc chambers • Valve Size (in.): 2.165 intake / 1.590 exhaust • Compression Ratio: 10.7:1 • Rocker Arms (P/N 12569167 int): Investment-cast, roller trunnion • Rocker Arms (P/N 10214664 exh): Investment-cast, roller trunnion • Rocker Arm Ratio: 1.7:1 • Recommended Fuel: Premium pump • Maximum Recommended rpm: 6600 • Reluctor Wheel: 58X • Balanced: Internal