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JR Race Car ZRK-4000 - JR RACE CAR ENGINES

JR Race Car ZRK-4000 - JR RACE CAR ENGINES

JR Race Car#574-ZRK-4000

Stage 8 ZR Engine Kit

JR Race Car ZRK-4000 - JR RACE CAR ENGINES Details

Engine Kits

ZR Stage 8 complete block kit, capable of running 8.50 with a 325-350 lbs package at sea level.
Kit components:

  • ZR3 Billet Block (bore size between 2.994" - 3.032")
  • ZR3 Billet head
  • ZR3 Billet head gasket (0.015. 0.021, 0.027, 0.032, 0.042, 0.060)
  • ZR Billet side cover
  • 2-port ZR Billet breather
  • JR 0.563 stroke Billet crankshaft
  • Hardened crank gear
  • 4.225" Billet connecting rod
  • Dome piston with rings, wrist pin, and clips
  • ZR Billet camshaft (0.473" lift)
  • Dual valve springs
  • 1.500" Stainless steel intake valve
  • 1.250" Stainless steel exhaust valve
  • Multi-angle valve job
  • Full length bronze valve guides
  • CNC ported intake and exhaust ports
  • 27" 3-stage coated header
  • Billet intake (hardware kit included)
  • 33mm Mikuni carburetor with velocity stack
  • Air filter
  • 3? Billet adjustable coil bracket
  • JR 3HP hot coil
  • Billet 3HP flywheel
  • Bosch spark plug
  • Grooved billet starter nut
  • Billet fuel pump bracket
  • Walbro fuel pump
  • 10' of fuel line
  • Fuel filter
  • Hardware Kit

  • JR Race Car ZRK-4000 - JR RACE CAR ENGINES

    JR Race Car has an engine for any level of Jr Drag Racing. From their 12.90 Raptor based motor all the way to their 3 3/4" bore Titan motor. Check out the information on each engine, you are sure to find one that fits your needs. Also available are engine kits for the crew chief who likes to do his own engines.

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