- Index
- Brand
- Ams Racing (25)
- Chevrolet (152)
- Comp Cams (66)
- Edelbrock (256)
- Engine Pro (32)
- Enginetech (59)
- Espeedpro21 (24)
- Gearhead (25)
- General Motors (24)
- Gm Chevrolet (23)
- Holley (310)
- Ict Billet (45)
- Jegs (26)
- Melling (35)
- Moroso (35)
- Motornets (31)
- Oe Quality (24)
- Proform (124)
- Speedway Motors (56)
- Weiand (46)
- Other (1329)
- Features
- Fitment Type
- Fuel Type
- Material
- 16 Gauge Steel (2)
- 304 Stainless Steel (3)
- Aluminum (458)
- Aluminum Alloy (2)
- Billet Aluminum (4)
- Cast Aluminum (114)
- Cast Iron (33)
- Chrome (4)
- Chrome Steel (3)
- Die Cast Aluminum (16)
- Diecast (4)
- Forged Aluminum (5)
- Mild Steel (3)
- Plastic (38)
- Rear (3)
- Stainless Steel (52)
- Stamped Steel (18)
- Steel (86)
- Tri Armor Coated (3)
- Unknown (2)
- Other (1894)
- Type
- Bearing Kit (9)
- Big Block Chevy (54)
- Camshaft (26)
- Engine Block (29)
- Engine Mount Kit (14)
- Engine Oil Pans (18)
- Engine Rebuild Kit (10)
- Engine Valve Cover (11)
- Engine Water Pump (39)
- Fuse Box (53)
- Hydraulic Flat (32)
- Intake Manifold (111)
- Motor Mounts (9)
- Oil Pan (18)
- Piston Set (18)
- Radiator (43)
- Small Block Chevy (89)
- Valve Cover (32)
- Valve Cover Set (24)
- Valve Covers (27)
- Other (2081)
GM Chevrolet LS Gen III LM4 5.3 5.3L OEM Aluminum Bare Engine Block 12571048
M Chevrolet LS Gen III LM4 5.3L OEM Aluminum Bare Engine Block 12566910 CASTING NUMBER 12571048 5.3. New Old Stock No Damage. 5.3L / 325 cid. Bore 1/5 = 2.326, Bore 2/4 = 2.317, Bore 3 = 2.307. Bore 1/5 = 2.346, Bore 2/4 = 2.326, Bore 3 = 2.307. M9 x 1 x 43. Cylinder Head Bolt Size (2003). (8) M11 x 2 x 155, (2) M11 x 2 x 100, (5) M8 x 1.25 x 45. (10) M11 x 2 x 100, (5) M8 x 1.25 x 45. Lobe Separation Angle (in degrees).
Fuel Injector Length (between O-Rings). Rear Mount, 1x on cam.
Front Sump, tunnel in pan for 4wd, center filter.