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Short Blocks / Short Blocks - Stage 1, 2, 3 and Race Prepped Blocks

JR Motorsports Stage 2 Pro-Line Shortblocks

Description:

Even greater reliability can be added to your engine program with the JRM Pro-Line 4340 H-beam Series short block. Featuring a new 4340 steel crank and H-beam steel rods, these short blocks will deal with stress and fatigue night after night.

Short Blocks Feature

  • Price listed does not include camshaft, timing chain, cam button, cam lock, and degreeing in of the cam
  • Fully prepped block
    •Align honed
    • Square decked with BHJ 90deg. fixture
  • 4340 race prepped H-beam rods
  • 4340 Scat Crankshaft
  • Pro-Tru forged pistons by Wiseco
  • Performance plasma moly rings
  • ARP main studs
  • All JRM Shortblocks include engine stand
  • Brass freeze plugs
  • Screw in oil restrictors
  • Dura-bond HP cam bearings
  • Clevite 77 H-Series rod and main bearings
  • Completely clearanced and assembled
  • Internally balanced
  • Deck plate honed
  • Designed for racing use only
  • No warranty
  • Must be shipped by Truck Freight
  • To add a PRC solid lifter cam, true roller double row timing chain, cam button, cam lock plate, and degreeing in of the camshaft, add $158.92

JR Motorsports Stage 2 Pro-Line Shortblocks

Select Product To Purchase
Part # Product Name Engine Size Dome Volume Compression Ratio 64cc Compression Ratio 76cc Rod Length Price Qty / Add To Cart
MTR PH355-57F JR Motorsports Stage 2 Pro-Line Shortblocks 355ci -5.4cc 10.1 8.8 5.7 $3,141.07
MTR PH355-60F JR Motorsports Stage 2 Pro-Line Shortblocks 355ci -5.4cc 10.1 8.8 6.0 $3,141.07
MTR PH355-57D JR Motorsports Stage 2 Pro-Line Shortblocks 355ci +8cc 12.1 10.4 5.7 $3,141.07
MTR PH355-60D JR Motorsports Stage 2 Pro-Line Shortblocks 355ci +8cc 12.1 10.4 6.0 $3,141.07
MTR PH357-57F JR Motorsports Stage 2 Pro-Line Shortblocks 357ci -5.4cc 10.1 8.9 5.7 $3,141.07
MTR PH357-60F JR Motorsports Stage 2 Pro-Line Shortblocks 357ci -5.4cc 10.1 8.9 6.0 $3,141.07
MTR PH357-57D JR Motorsports Stage 2 Pro-Line Shortblocks 357ci +8cc 12.2 10.5 5.7 $3,141.07
MTR PH357-60D JR Motorsports Stage 2 Pro-Line Shortblocks 357ci +8cc 12.2 10.5 6.0 $3,141.07
MTR PH377-57D JR Motorsports Stage 2 Pro-Line Shortblocks - 377 assembly includes spacer bearings 377ci +8cc 12.8 11.0 5.7 $3,341.07
MTR PH377-60D JR Motorsports Stage 2 Pro-Line Shortblocks - 377 assembly includes spacer bearings 377ci +8cc 12.8 11.0 6.0 $3,141.07
MTR PH383-57F JR Motorsports Stage 2 Pro-Line Shortblocks 383ci -5.4cc 10.8 9.5 5.7 $3,141.07
MTR PH383-60F JR Motorsports Stage 2 Pro-Line Shortblocks 383ci -5.4cc 10.8 9.5 6.0 $3,141.07
MTR PH383-57D JR Motorsports Stage 2 Pro-Line Shortblocks 383ci +8cc 13.0 11.1 5.7 $3,141.07
MTR PH383-60D JR Motorsports Stage 2 Pro-Line Shortblocks 383ci +8cc 13.0 11.1 6.0 $3,141.07
MTR PH406-57F JR Motorsports Stage 2 Pro-Line Shortblocks 406ci -5.4cc 11.4 10.0 5.7 $3,341.07
MTR PH406-60F JR Motorsports Stage 2 Pro-Line Shortblocks 406ci -5.4cc 11.4 10.0 6.0 $3,341.07
MTR PH406-57D JR Motorsports Stage 2 Pro-Line Shortblocks 406ci +8cc 13.7 11.7 5.7 $3,341.07
MTR PH406-60D JR Motorsports Stage 2 Pro-Line Shortblocks 406ci +8cc 13.7 11.7 6.0 $3,341.07


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