LT1 NA/Nitrous 416 Stroker Shortblock (Gen.V LT)


Bore: 4.070"

Stroke: 4.000"

Connecting Rod Length: 6.125"

Displacement: 6.8L / 416c.i.

Piston Volume: -0.7cc Strictly Spec'd dome with valve reliefs or -9cc flat top with valve reliefs

Compression Ratio:

13.0:1 with 59cc LT1 Heads and -0.7cc Pistons

11.8:1 with 59cc LT1 Heads and -9cc Pistons


Horsepower Rating: Over 1000whp with Nitrous


Engine Block: New OEM LT1/4/5 Aluminum Block

Crankshaft: Callies Stroker Crankshaft

Pistons: Diamond Racing Forged Pistons

Connecting Rods: Callies Compstar H-Beam Connecting rods w/ ARP rod bolts

Main Fasteners: ARP Main Studs

Main Bearings: King XP-Series Race Bearings

Rod Bearings: King XP-Series Race Bearings

Cam Bearings: Durabond one piece bearings


Cylinder Heads: Strictly Spec'd CNC Ported LT1 Heads

Valves: 2.126" Hollow Stem Steel intake  / 1.590" Sodium Filled Steel exhaust

Valve Springs: .660" Lift Dual Valve Springs w/ Titanium retainers

Camshaft: Application Specific Spec'd Camshaft

Timing Chain: Katech C5-R Timing Chain

Lifters: OE Replacement LS7 Lifters

Push Rods: 3/8 Diameter Chromoly Pushrods

Rocker Arms: New GM LT Rocker Arms w/ trunnion upgrade

Head Fasteners: ARP Head Bolts

Head Gaskets: GM MLS Head Gaskets

Oil Pump: OEM GM Oil Pump


416 STROKER LT1 NA/Nitrous Longblock (Gen.V LT)