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

632 CU. IN. SAR/BRODIX 14.5 DEGREE PONTIAC HEADED ENGINE WITH 2X4 CARBURETION
1320 HP/4.600 BORE X 4.750 STROKE

feature list

  • New Dart Big "M" block (race prep w/ARP head studs)
  • Bronze lifter bushings installed
  • Crower/Callies 4340 non-twist forged crank
  • BME aluminum 426 forged rods
  • Venolia pistons with tool steel 1.031" tapered wall pro wrist pins
  • Speed Pro rings
  • Clevite 77 rod and main bearings
  • In-house fully CNC ported SAR/Brodix 14.5 degree Pro Stock style heads with Manley titanium valves
  • SAR/T&D shaft mounted rocker system with one piece rocker bar for endurance with needle bearing roller tips
  • Jesel belt drive
  • SAR 2x4 sheetmetal intake manifold (w/special Pro Stock runner design)
  • 2-1150 Holley HP series carburetors w/linkage
  • MSD cranktrigger ignition
  • Crane/SAR roller camshaft
  • Crower severe duty roller lifters
  • Moroso 4 stage dry sump oiling system
  • Moroso vacuum system
  • Sheetmetal billet rail valve covers
  • ATI balancer
  • Meziere hi-flow electric water pump
  • CSR starter

Complete & Dyno Tested    $37,095.00

Additional Options

  • 4.900 bore space option, with special crank, Merlin Pro cnc block w/billet splayed caps and 4.900 B.S. heads
  • $3,990.00
  • 4.900 B.S. Donovan aluminum block with 4.900 B.S. crank
  • and heads
  • $5,460.00
  • Special 54 mm cam core and cagged needle bearings
  • $950.00
  • Felpro electronic Fuel Injection (sequential)
  • $5,040.00
  • Nos fogger system installed (300 HP) 1 system
  • $1,895.00