GM Performance R0X Race Blocks


GM Performance
GM Performance R0X Race Blocks

Product images may differ from actual product appearance.

The new GM small-block R0X V8 engine is the next evolution in the design of the Cheverolet small-block. It has been successfully raced in ARCA & the Baja 1000. The design incorporates wider 4.500" bore center for improved engine architecture. The R0X package has dedicated components to take advantage of the spread bores such as cylinder heads, intake manifolds, and other aftermarket parts.
  809-25534452
283 Main, R0X Series Block Gray Iron
  • CNC-machined
  • Can be machined for standard, SB2 and splayed valve lifter patterns
  • No lifter holes
    $119.00
    		• $10,489.99
    Ships
    in 3 days
    GM Performance 25534453 - GM Performance R0X Race Blocks
         		809-25534453
    		283 Main, R0X Series Block SB2.2 Lifter Pattern
  • CNC-machined
  • SB2.2 lifter pattern for P/N 88958667
    $119.00
    		• $10,939.99
    Ships
    in 3 days

  • CNC-machined, Cast iron competition block
  • 7/16" Priority main oil system
  • 9.025" deck height
  • 4-bolt R0X-block specific SAE 4140 doweled steel mains
  • 17 degree splayed caps on center 3 mains
  • Center main thrust
  • 4.166" rough bore (siamese bores)
  • 4.250" max bore and main spacing
  • Special sylinder head bolt pattern, 3/8-24 UNF threads
  • 68mm (2.677") cam bearing bores for 60mm roller bearings
  • Cam tunnel is closed (no oil drain to rotating assembly)
  • Cam tunnel is raised 1.572" to 6.093"
  • .835" lifter bores (1.06 max) 42 degree intake, 52 degree exhaust, can be relocated
  • Cam lobe squirter provisions
  • Piston squirter provisions, not machined
  • -06AN water fittings
  • AN O-ring pipe plugs
  • (4) Center lifter valley drains (drilled & tapped)
  • Steam holes drilled between cylinders .750" below deck surface
  • Dry sump only (no oil filter boss)
  • Oil pan rails spread to 10.61"
  • Front motor mounts only
  • Dual starter mounts
  • Tested to over 800 horsepower!
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