Pontiac 421-428-455ci Hi Performance Engines
Pontiac 421, 428, 455ci: Block Crank, Connecting Rods and Heads are completely reconditioned to the proper over under sizes make these Engines Better than New. Completely machined and assembled under strict conditions that Awesome Bill has learned from years of machining principals that have gotten better, dyno testing keeps finding power each time testing is done.
Depending on power levels, all 4-bolt 3.250″ main blocks are available for hi-Performance Engines that are 100% CNC machined correcting big bore centers perfectly to 4.620″ allowing us to a final bore size of 4.210″. CNC 45° bank angles are critical for proper ring seal as well as all machined surfaces being perfect. Availability for a 421, 4 bolt block is outside the $3500 putting the MR1 true race block being the only thing to use is just common sense.
$8975.00
Components
- Pontiac 455 4 Bolt Main Big Bore 100% 4 Axis CNC Race Prepped Block
- Brass Freeze Plug Kit and Cam Bearing Kit
- Either 428 or 455 Cranks Reconditioned Undersized .010-.020
- Pontiac Rods Reconditioned to Specifications with ARP Rod Bolts
- Clevite or King Main and Rod Bearings
- Sealed Power Stock Replacement Cast Pistons
- Chrome Moly File to Fit Rings
- Isky, Erson or Comp Hi-Performance HP Muscle Car Cam
- Isky, Erson or Comp Hi-Performance Hydraulic Lifters
- Double Roller Hi-Performance 3 Piece Timing Kit
- New Aluminum Timing Cover Kit
- New Water Pump, Backing Plate Reset for No Over Heating Issues
- New Damper (others available in options)
- Pontiac Hp Big Valve Steel Heads with all Brand-New Parts
- Hi-Performance 2.11/1.77 Intake and Exhaust Valves
- Hi-Performance Seals, Springs, Locks and Retainers Per Camshaft
- Cometic Head Gaskets are required to Keep all Power Inside
- LPC, Manley or Trend .120 Wall 5/16 Hi-Performance Push Rods
- Hi-Performance Isky, Erson, PRW or Comp Long Slot Roller Tip Rockers
- Melling M54DS Oil Pump and Proper Pickup Tube
- Moroso Hi-Performance Oil Pan
- Black Coated Valve Covers with Baffles (Chrome Ava)
- Black Air Gap Coated 4150 Dual Plane Intake Manifold
- Proform Carburetors (available in options)
- MSD Ready to Run Ignition Kits (available in options)
- Actual Shipping Paid up to $200 to Your Zip Code for Pick Up @ Terminal
OPTIONS
Rare Pontiac 3.250″ Main 4 Bolt Stock Cap 428-440ci-.060-4.185″ and 455-470ci-4.215″ Blocks Available to 4.215″ .060″ Over-Bore
+ $2000.00
474ci 4 Bolt Block, 455M4340IB42506800220, 4340 Steel 4.250″ Stroke, BBC 2.200″ 6.800″ H Beam Steel Rods, ARP2000 7/16 Bolts, Forged Pistons
+ $5795.00
486ci 4 Bolt Block, 455M4340IB47506800220, 4340 Steel 4.350″ Stroke, BBC 2.200″ 6.800″ H Beam Steel Rods, ARP2000 7/16 Bolts, Forged Pistons 502ci
+ $5995.00
Diamond, JE, or Wiseco Forged Custom Pistons (from)
+ $ 875.00
Hydraulic Roller Cam, Lifters, Springs Retainers and 10° Locks
+ $1495.00
Jesel or T&D Shaft Rocker System (will not require tall valve covers or spacers)
+ $1275.00
Edelbrock 4150 Victor Series Intake Manifold Available (efi available)
+ $ 350.00
Proform up to 1050 cfm 4150 Carburetors (available from}
+ $ 675.00
Edelbrock RPM 61525 204cc/87cc or Kauffman High Port Aluminum Cylinder Heads
+ $2475.00
CNC Ported Raised Big Port with Spread Oval Port Exhaust and North Wind Intake with Big HP over Stock Steel Heads (from)
+ $3995.00
MSD Pro Billet Ready to Run Distributor, Coil, Wires and NGK Plugs Kit for the Best Package there is
+ $ 675.00
SFI Damper Specific Honed to Crank
+ $ 275.00
Internally Balanced Flexplate or Flywheel for Automatic and Manual Transmissions and Power Master Starter Kits Available (from)
+ $ 325.00
Moroso 7 Quart Oil Pan and Proper Pick-Up Tube Kit
+ $ 295.00