imxz28

LT1 6.2L TECH SPECS
Part Numbers: 19328728 (wet sump)
19329997 (dry sump)
Engine Type: Direct Injection spark ignition
Gen V Small-Block V-8
Displacement (cu in): 376 cu in 6.2L
Bore x Stroke (in): 4.065 x 3.622 (103.25 x 92mm)
Block (P/N 12619171): Cast-aluminum with 6-bolt nodular
iron main bearing caps
Crankshaft: Forged Steel
Connecting Rods: Forged powdered metal
Pistons (P/N 12662802): Hypereutectic aluminum
Camshaft Type (P/N 12629512): Billet steel roller
Valve Lift (in): 0.561" intake / 0.531" exhaust
Camshaft Duration (@0.050 in): 242° intake / 244° exhaust
Cylinder Heads (P/N 12620544): Aluminum, rectangular port D/I
Valve Size (in): 2.165" intake / 1.590" exhaust
Compression ratio: 11.5:1
Rocker Arms (P/N 12619829 int): Investment-cast, roller trunnion
Rocker Arms (P/N 12619829 exh): Investment-cast, roller trunnion
Rocker Arm Ratio: 1.81:1
Recommended Fuel: Premium recommended
Maximum Recommended RPM: 6600
Reluctor Wheel: 58x
Balanced: Internal

Ben@WeaponX

Not following? Pistons are hypereutectic

glass slipper

In addition:
"Camshaft Duration (@0.050 in): 242° intake / 244° exhaust"

Not at .050" lobe lift...

W88fixer

What is on my computer screen is the OP says the pistons are hypereutectic. Don

TXArtic

Title should read:

LT1 specs! Partially forged!

OBSSSD

True he is wrong, but the LS3 did great on FI with cast pistons

Ben@WeaponX

I said nothing about FI . The CTS V's have the hypereutectic pistons and Ron 18 to 20 pounds of boost at about 750 wheel horsepower on the stock blower plus some run nitrous on top of that! They can certainly take the power with a good tune and more often than not it's the rings that have issues.