
Product Discontinued
BLUEPRINT ENGINESPART NUMBER: 138-BPS4250200S
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 9.8 Deck
- Big Block Chevy Cast Iron Engine Block
- Gen IV 2-Piece Rear Main Seal
- 4.250" Bore
- 9.8" Deck Height
!Specifications for 138-BPS4250200S: - Material: Cast Iron
- Deck Height: 9.800"
- Deck Thickness: .700" minimum
- Bore Size: 4.250"
- Max. Bore: 4.625"
- Cylinder Wall Configuration: Siamese
- Cylinder Wall Thickness: .300"
- Main Caps: Ductile Iron, 4 bolt splayed
- Main Bearings: Standard Chevy
- Main Bearing Bore: 2.9370" - 2.9380"
- Crank Clearance: 4.375" for 9.800" 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 Height27.0
Package Width30.5
Package Length31.5
Weight433.0 PG
Part CategoryPerformance Parts
Engine Block Weight (Lbs.)275
Deck Height9.8 in (248.92 mm)
ToolStroker Combinations
Vendor Part NumberBPS4250200S
Package Qty1
Package TypeEA
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