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LS3 Sportsman series engine

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  • Brand new LS3 block
  • Bored and torque plate honed to 4.070”
  • LS3 steel crankshaft, heat-treated and finished to final blueprint spec
  • Forged Flat Top Pistons
  • Forged Steel “H” beam con rods
  • Fully rotational balance
  • Block main tunnel line honed
  • Cam tunnel line honed and new one-piece bearings fitted
  • Block decked for zero deck height
  • Choice of the hydraulic camshaft
  • LS7 endurance timing chain set
  • LS7 lifters and lifter buckets
  • GM performance oil pump and girdle kit
  • Brand new LS3 cylinder heads with lightweight valves
  • BTR one-piece shaft rockers and bush kit
  • Double valve spring kit with titanium retainers
  • Chrome moly thick wall pushrod set
  • Billet one-piece timing cover
  • Choice of front or rear deep sump
  • Choice of inlet manifold
  • Engine can be set up for carby and distributor or EFI
  • Comp ratio from 11.3:1 up to 14.5:1
  • These engines make 640 HP with carby and mild camshaft or 680hp with EFI and wild camshaft
Weight400 kg
Dimensions100 × 100 × 100 cm


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