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 5.3L longblock in mild 400whp NA setups or in boosted setups up to the 700whp mark with the optional ARP head stud upgrade.
Hot Rod Series 5.3L LS Longblock
Connecting Rod Length: 6.089"
Displacement: 5.3L / 328c.i.
Piston Volume: 0.00cc Flat tops with no valve reliefs
10.5 with 61cc(862/706 Gen 3)
10:1 with 64.5cc(243/799 Gen 4)
Horsepower Rating: Up to 700whp on Boost with the ARP Headstud option
Horsepower Output: Up to 425whp Naturally Aspirated
Engine Block: Reconditioned OEM Gen 3 or 4 5.3 Iron or Aluminum Block
Crankshaft: Reconditioned Gen 3 24x or Gen 4 58x OEM Crankshaft
Pistons: Hypereutectic with hard anodized crown and 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
Gen 3 CNC Ported 862/706 Reconditioned Heads
Gen 4 CNC Ported 243/799 Reconditioned Heads
Valves: Reconditioned Stock Valves w/ multi angle valve job
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: Reconditioned 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
HotRod 5.3L (LS) Longblock
Gen 3: Uses a 24x reluctor wheel crankshaft and a Gen 3 configuration 5.3 block with the knock sensors in the valley. The Gen 3 configurations come with CNC ported 862 or 706 casting heads.
Gen 4: Uses a 58x reluctor wheel crankshaft and a Gen 4 configuration 5.3 block with the knock sensors on the side of the block. The Gen 4 configurations come with CNC ported 243 or 799 casting heads.