LS3 Specs vs LSX376 with 480 or 520 HP

[lpar1969]

LS376/525 TECH SPECS
Part Number:
19301360


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/N12623967):
Cast aluminum with six-bolt, cross-bolted main caps
Crankshaft (P/N 12597569):
Nodular iron
Connecting Rods (P/N 12607475):
Powdered metal
Pistons (P/N 19207287):
Hypereutectic aluminum
Camshaft Type (P/N 88958770):
Hydraulic roller
Valve Lift (in.):
0.525 intake / 0.525 exhaust
Camshaft Duration (@.050 in.):
226° intake / 236° exhaust


Cylinder Heads (P/N 12629063):
Aluminum L92-style port; “as cast” with 68-cc chambers
Balanced:
Internal
Valve Size (in.):
2.165 intake / 1.590 exhaust
Compression Ratio:
10.7:1
Rocker Arms (P/N 12569167 int):
Investment-cast, roll trunnion
Rocker Arms (P/N 10214664 exh):
Investment-cast, roll trunnion
Rocker Arm Ratio:
1.7:1
Recommended Fuel:
92 octane
Maximum Recommended rpm:
6600
Reluctor Wheel:
58X