Our Hotrod series engines are the perfect choice for someone building a custom hotrod, old muscle car, or replacing that tired old factory engine in your late model GM vehicle.
 
We have used our Hotrod LS3 longblock in 500whp NA setups or in boosted setups up to the 700whp mark with the optional ARP head stud upgrade.
 
HotRod Series LS3 Longblock
 
Bore: 4.065"
Stroke: 3.622"
Connecting Rod Length: 6.089"
Displacement: 6.2L / 376c.i.
Piston Volume: 0cc Flat tops
Compression Ratio: 10.7:1 with 68cc LS3 Heads
 
Horsepower Rating: Up to 700whp on Boost with the ARP Headstud option
Horsepower Output: Up to 500whp Naturally Aspirated
 
Engine Block: New Aluminum LS3 Block
Crankshaft: New Gen 4 58x OEM Crankshaft
Pistons: Hypereutectic with coated skirts.
Connecting Rods: Reconditioned Gen 4 OEM connecting rods.
Main Fasteners: New GM Main Bolts
Main Bearings: King XP-Series Race Bearings
Rod Bearings: King XP-Series Race Bearings
Cam Bearings: Durabond one piece bearings
 
Cylinder Heads: New Square Port LS3 Heads
Valves: 2.165" intake / 1.590" exhaust
Valve Springs: .660" Lift Dual Valve Springs w/ steel retainers
Camshaft: Application Specific Spec'd Camshaft
Timing Chain: GM HD Timing Chain
Lifters: OE Replacement LS7 Lifters
Push Rods: 5/16 Diameter Chromoly Pushrods
Rocker Arms: New LS3 Rocker Arms w/ trunnion upgrade
Head Fasteners: GM Head Bolts or Optional ARP Head Studs
Head Gaskets: GM MLS Head Gaskets
Oil Pump: Melling High Pressure Oil Pump

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