GM Hemispherical Heads
Designed and Fully CNC Machined By Sonny's

632 CU. IN. 14.5 PONTIAC 1X4 PRO STREET LOW COMPRESSION
DESIGNED TO OPERATE ON 92 OCTANE PUMP GAS 970 HP @ 6500

feature list

  • Dart Big "M" block with ARP studs
  • 4.750" stroke 4340 internally balanced
  • Eagle steel rods w/L-19 bolts
  • SAR Venolia pistons with tool steel wrist pins
  • Speed Pro rings
  • Clevite 77 bearings
  • SAR/Brodix "Pro Stock" 14.5 degree aluminum head
  • T&D shaft mounted rocker system
  • Crane billet roller timing set
  • SAR/Crane camshaft
  • Crane lifters
  • Manton 7/16" pushrods
  • ATI balancer
  • Internal Titan pump w/Billet Fab oil pan
  • MSD cranktrigger distributor
  • Moroso wires
  • Sonny's aluminum valve covers
  • CSR platinum starter
  • Moroso vacuum system
  • Manley titanium valves

Complete & Dyno Tested    $25,150.00

Additional Options

  • SAR installed NOS fogger (+300 HP)
  • $1,895.00
  • Jesel cam belt drive system
  • $682.00
  • 2 pc aluminum oil pan
  • $600.00
  • Crower billet steel rods
  • $700.00
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