
Product Discontinued
BLUEPRINT ENGINESPART NUMBER: 138-BPT4250200W
BB Chevy Cast Iron Engine Block Gen IV 2-Piece Rear Main Seal
Currently Unavailable
This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
Cast Iron Big Block Chevy BlockGen IV 10.2 Deck
- Big Block Chevy Cast Iron Engine Block
- Gen IV 2-Piece Rear Main Seal
- 4.250" Bore
- 10.2" Deck Height
!Specifications for 138-BPT4250200W: - Material: Cast Iron
- Deck Height: 10.200"
- Deck Thickness: .700" minimum
- Bore Size: 4.250"
- Max. Bore: 4.350"
- Cylinder Wall Configuration: Open
- Cylinder Wall Thickness: .400"
- Main Caps: Ductile Iron, 4 bolt splayed
- Main Bearings: Standard Chevy
- Main Bearing Bore: 2.9370" - 2.9380"
- Crank Clearance: 4.750" for 10.200" deck
- Rear Main Type: 2-Piece Rear Main Seal
- Camshaft Location: Stock
- Cam Bearings: Standard Chevy
- Cam Drive: Timing Chain, Gear Drive and Belt Drive
- Cam Plug: Standard BBC, 2.215" diameter
- Timing Cover Pattern: Gen IV (10-bolt)
- Lifter Bores: Gen V/VI, Will Accept Link Bar
- Freeze Plugs: Standard 1 5/8" (Not included)
- Lubrication: Main Priority Oiling, Wet or Dry Sump
- Oil Filter Boss: Integral mount for spin-on filter
- Oil Cooler Holes: Integral to block
- Oil Pan Rail: Standard Big Block Chevy 2-Piece Rear Main Seal Bolt Pattern
- Fuel Pump Boss: Yes
- Fuel Pump Pushrod: Standard Big Block Chevy
- Starter: Standard location
- Motor Mounts: Front and side
- Stud and Bolt Holes: Blind tapped to prevent leaks
- Head Bolt Pattern: Standard Big Block Chevy
- Inside Head Bosses: Yes
- Torque Specs: All 1/2" bolts 105 ft/lbs
- Clutch Linkage Boss: Yes
- Weight: Approximately 275 lbs

Part TypeEngine Block
BrandBLUEPRINT ENGINES
Package Width275.0
Weight275.0 PG
Part CategoryPerformance Parts
Main Journal Type454 mains
Engine Block StyleAftermarket/OEM tall deck
Engine Block MaterialCast iron
Cylinder Bore As Shipped4.24 in (107.696 mm)
Engine Block Weight (Lbs.)275
QuantitySold individually
Raised Cam LocationNo
Freeze Plugs IncludedNo
Main Bolt Style4-bolt
Deck Height10.2 in (259.08 mm)
Main Bearings IncludedNo
Main Cap MaterialDuctile iron
Rear Main Seal Style2-piece
Main Caps IncludedYes
Finished Cylinder BoresNo
Cylinder Bore Diameter4.25 in (107.95 mm)
Cam Bearings IncludedNo
Main Cap Fasteners IncludedYes
Vendor Part NumberBPT4250200W
Package Qty1
Package TypeEA
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