Competition SBC 350 Semi-Finished MB 2-Pc
BBC 454 Competition Machined Block
Images are representational only.
 $799.99 

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Specification Overview

Sportsman Series
SBC 350: Semi-Finished Machined Block
4.025, 4.035, 4.055 Bore; 350 Mains, 2-Piece Rear Main Seal
(.005" Available For Finish Honing)

  • Seasoned GM production, factory roller, 2-bolt block (converted to 4-bolt mains)
  • Block is oven baked and shot peened to settle molecular structure    
  • Magnafluxed for cracks, clearanced for strokers. Additional clearancing may be necessary depending upon your rod and stroke combination  
  • Block is precision machined on our 4-axis CNC equipment
  • Cylinders require finish honing as needed
  • Mains are line bored on our Winona Van Norman line boring equipment
  • Mains are finish honed on Sunnen CH100 Line Hone
  • Block is converted to 4-bolt billet (center 3 only) mains using ARP main studs
  • Block ships with a machined block kit including: Cam Bearings, Freeze Plug Package, and Alignment Dowel Package
  • Block ships with a 2-piece seal adapter (not installed) for 2-piece crankshaft applications