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Chevrolet Performance Small Block Chevy Bow Tie Race Blocks


Chevrolet Performance
Chevrolet Performance Small Block Chevy Bow Tie Race Blocks

Proven in NASCAR and NHRA, Chevrolet Performance Bow Tie Race Blocks produce big power. These cast iron engine blocks use premium materials throughout and have full race-prep CNC-machining with tighter tolerances than standard Bow Tie Blocks.

Features
  • Cast iron block
  • CNC-machined for +/- 0.001'' tolerances
  • SAE 8620 steel 4-bolt mains (20° splayed caps on the three center mains)
  • Extra-thick main bearing bulkhead machined at 5°
  • Priority main oiling system
  • Siamese bores
  • Nominal wall thickness of cylinder bores is 0.340''
  • Enlarged cam bosses allow custom machining for larger bearings
  • Bearing cap inner bolts spread 0.210'' to accept machining of 400 journal crankshafts
  • Extra-thick deck surfaces have blind-tapped head bolt holes for superior head gasket sealing
  • Cylinder decks, front and rear of case, oil pan rail surfaces, and head dowel pins are blueprinted

    Technical Notes
  • Check timing system clearance before engine assembly
  • Non-standard cam bearings required (Click More Info below)
  • 2-piece rear main crankshafts and pre-1986 oil pans required
  • Billet wet sump rear main cap can be adapted to dry sump with plugs
  • Some aftermarket mechanical roller lifters may require clearancing at top of lifter bores
  • Lifter valley oil scavenging boss (below bellhousing flange) and oil dipstick holes are not drilled


  • 2 Products
    Standard Deck

    809-24502503
    Cast Iron Bow Tie Race Block
  • Small Block Chevy (350 Main)
  • Standard Deck: 9.025''
  • Tested to 700+ Horsepower
  • 3.980'' Finished Bore (4.155'' Maximum)
  • $119
    $2,423.99
    Order Today Ships 07/31/14
    Short Deck

    809-24502650
    Cast Iron Bow Tie Race Block
  • Small Block Chevy (283 Main)
  • Short Deck: 8.325''
  • Tested to 800+ Horsepower
  • 3.980'' Rough Bore (4.190'' Maximum)
  • $119
    $3,837.99
    Order Today Ships 07/31/14

    2 Products