The Blueprint Engines Big Block Chevy Cast Iron Blocks are loaded with engineering and design features including ductile iron 4-bolt splayed main caps, main priority oiling, a mechanical fuel pump boss, clutch linkage boss and Gen IV or Gen V/VI compatibility. They are a perfect foundation for building horsepower for street, bracket racing and marine use! Made in the USA!

Type: Big Block Chevy
Material: Cast Iron
Cylinder Wall : Siamese
Cylinder Wall Thickness: .300"
Bore: 4.500"
Max Recommended Bore and Stroke: 4.625"
Deck Height: 9.800"
Cam bearing bore ID: 2.120" STD
Cam bearings: Not included, recommend Clevite SH617S
Camshaft Position: Standard
Cam Drive: Timing Chain, Gear Drive and Belt Drive
Cam Plug: Standard BBC, 2.215" diameter
Distributor Tap Hole Valley: Yes
Freeze Plugs: Not included; Standard 1 5/8"
Head Bolt Pattern: Standard BBC
Inside Head Stud Bosses: Yes
Lifter Bores: Gen V, VI: Will accept link bar
Main Bearing Size: Standard BBC
Main Bearing Bore: 2.9370 - 2.9380
Main Caps: Ductile Iron, 4 bolt splayed
Oil System: Main Priority Oiling, Wet or Dry Sump
Oil Cooler Holes: Integral to block
Rear Main Seal: 1 piece
Hydraulic Roller Provisions: Will accept Gen V and VI & most link bar
Stud and Bolt Holes: Blind tapped
Tapped Holes: Standard Thread and Pitch
Timing Chain / Gears: Std. BBC Gen IV, V, VI
Timing Cover: Will accept Gen V and VI, 6 bolt timing cover
Torque Specs: All 1/2" bolts 105 pounds
Fuel Pump Boss: Yes
Fuel Pump Pushrod: Standard BBC
Oil Filter: Standard location
Oil Pan: 1 piece RMS standard BBC bolt pattern
Starter: Standard location
Clutch Linkage Boss: Yes

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BluePrint Engines BPS4500100S Big Block Chevy Cast Iron Bare Block 4.500 Siamese Bore 1 piece RMS

Product Information

  • $2,049.99