Dart BBC Big M Sportsman Iron Block 31223444 - 9.800/4.500
DRT31223444 (1 in stock)Dart
Regular price
$3,999.99
"Big M” Sportsman Iron Block
The blocks that set the standard for big block Chevrolet include Siamese bores, scalloped water jackets, redesigned oiling systems, valley head stud bosses, adequate clearances for stroker cranks, and four-bolt steel main caps.
- Big M
- Bare Block
- 4.500 in Bore - 9.800 Deck
- 4-Bolt Main
- 2 Piece Seal
- Cast Main Caps
- Iron
- Big Block Chevy
- Sold as Each
- MPN: 31223444
Truck Freight Only 
Additional Handling
Specifications
| Brand | Dart |
| Part Number | 31223444 |
|
Product Line
|
Big M Sportsman
|
|
Cylinder Bore
|
4.500 in
|
|
Cylinder Bore as Shipped
|
4.490 in
|
|
Intended Minimum Finish Bore
|
4.500 in
|
|
Intended Maximum Finish Bore
|
4.625 in
|
|
Maximum Stroke
|
4.750 in
|
|
Deck Height
|
9.800 in
|
|
1-Piece / 2-Piece Rear Main Seal
|
2 Piece
|
|
4 Bolt / 2 Bolt Mains
|
4 Bolt
|
|
Main Caps Included
|
Yes
|
|
Main Cap Material
|
Ductile Iron
|
|
Main Bearing Bore Minimum Diameter
|
2.937 in
|
|
Main Bearing Bore Maximum Diameter
|
2.938 in
|
|
Main Cap Fasteners Included
|
Yes
|
|
Cam Bearings Included
|
No
|
|
Mechanical Fuel Pump Provision
|
Yes
|
|
Lifter Bore Diameter
|
0.842 in
|
|
Wet Sump / Dry Sump
|
Wet/Dry Sump
|
|
Weight
|
260 lbs
|
|
Freeze Plugs Included
|
No
|
|
Cam Plug Diameter
|
2.215 in
|
|
Oil Filter Provision
|
Yes
|
|
Material
|
Cast Iron
|
|
Color
|
Natural
|
|
Finish
|
Natural
|
|
Quantity
|
Each
|
California Residents: Proposition 65 warning