461ci 525Hp Oldsmobile Street Engine

461ci 525Hp Oldsmobile Street Engine

Fully CNC race prepped dead on reconditioned Oldsmobile 2 bolt main block. Bored .030″ then final honed to 4.155″ bore.  Externally balanced recondition 4.250 crank, steel race prepped rods with ARP fasteners, forged pistons, moly rings, cam, main and rod bearings. In house Race prepped with all new components listed and a one piece race rear main seal. Oldsmobile fully race prepped heads are treated to a rolled radius valve job, new Comp Cams hydraulic roller springs, retainers and locks. PC style seals are used also. Everything assembled with a Comp Cams or Erson hydraulic roller camshaft and roller lifters. Dyno Tested and Tuned



  • Oldsmobile 455 Block Fully CNC Race Prepped
  • Head Bolt or Stud Kit Plate Honed with Block
  • Brass Freeze Plugs and Galley Plug Kit Installed
  • Reconditioned 455 Cast Crank and Externally Balanced Crank
  • Oldsmobile I-Beam Steel Rods Reconditioned with ARP Bolts
  • King or Clevite Main and Rod Bearings Installed
  • Mahle, JE or Wiseco 10:1 Forged -5.0cc Pistons
  • Plasma Moly File to Fit High Performance Rings
  • Comp Cams or Erson .500″ Lift Hydraulic Roller Cam
  • Double Roller Timing Kit
  • Recon or New Steel Timing Cover
  • Comp Cams or Erson Hydraulic Roller Lifters
  • New Externally Balanced Damper
  • Oldsmobile Heads Completely Freshened and Street Ported
  • New 2.100″ Intake and 1.710″ Exhaust Stainless Steel Valves
  • Comp Cams 1.437 Springs and 10° Retainers and Locks
  • Complete Fel Pro Hi-Performance Engine Gasket Kit
  • Manley .105″ Thick Wall Racing Push Rods
  • Comp Cams 1442 Magnum 1.6 Roller Rocker Arms
  • Melling Oil Pump and Proper Pickup Tube
  • Stock GM Steel Oil Pan
  • Chrome Valve Covers with Baffles for PCV Installed
  • Edelbrock Performer RPM Air Gap Intake Manifold
  • 870 cfm Holley Avenger Dyno Tested and Tuned Carburetor
  • Pro Street HEI Distributor, Wires and NGK Plugs
  • Dyno Tested and Tuned

Available Upgrades

¾ Fill Hard Block for Cylinder Wall Support
+ $ 249.00
Steel Billet 4 Bolt Main Center 3 Caps Installed; will require custom oil pan
+ $ 995.00
Scat 4.250″ Internally Balanced 4340 Steel Billet Crankshaft
488ci Custom Stroker Engine with Internally Balanced 4340 Steel Billet Crankshaft and Splayed Cap Block Upgrade
+ $3999.00
Solid Roller Cam Kit, Lifters, Roller Rockers, Springs, Retainers, Push Rod Package (Pro Street)
+ $1499.00
PowerBond SFI Damper and SFI Heavy Duty Flex-plate with ARP Bolts
+ $ 399.00
ATI SFI Super Damper and SFI Heavy Duty Flex-plate with ARP Bolts
+ $ 599.00
T&D Shaft Rocker System Installed (from)
+ $1199.00
Edelbrock Stage 1 Ported Intake Manifold
+ $ 399.00
Edelbrock Aluminum Cylinder Heads
+ $1499.00
MSD Pro Billet Distributor with Dyno Tune Done
+ $ 399.00
Complete 50-519 ( 650hp )Sniper Complete with 160 Pump Fuel Injection System Installed, Dyno Tested and Tuned (Silver or Gold Color is Available)
+ $975.00

Dyno Tested and Tuned with Exxon 93° Pump Gas • HP corrected to Sea Level

(12 month warranty covers this engine due to any defective part or workmanship. Engine must be sent or brought back to AwesomeEngines Machine Shop 100% completely assembled as it was when shipped with all shipping paid. Warranty is void if run hot, low of any fluids or abused.  Customer must change the oil and filter every 3000 miles using the proper oil with ZDDP additives no lower than 2000 ppm. Oils like Renegade #20502 20w50 – 3000 ppm  or Lucas #10635 20w50 Break in Oil – 3700 ppm  no matter what. Not changing the oil and filter is considered abusive and voids all warranties, no exceptions

Free freight does not apply to this item. We will ship to a UPS freight terminal for your address in the normal 48 states up to $400. Handling fees, insurance, residential, lift gate service, out of area charges, will apply for your area where you have this item shipped to. Total cost of these charges over the $400, if any, will be known to you before we ship.

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