Dart BBC Big M Sportsman Iron Block 31223454 - 10.200/4.500
DRT31223454 (3 in stock)Dart
Regular price
$3,999.99
"Big M” Sportsman Iron Engine 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 Engine Block
- 4.500 in Bore
- 10.200 Deck
- 4-Bolt Main
- 2 Piece Seal
- Iron
- Big Block Chevy
- Sold as Each
- MPN: 31223454
Truck Freight Only
Specifications
| Brand | Dart |
| Part Number | 31223454 |
|
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
|
10.200 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