Product Description
Aluminium GM LS Engine Block, 4.125" Bore
Manufactured from heavy-duty cast aluminium alloy, these brand-new semi-finished engine blocks utilize premium sleeves for exceptional durability and performance. Designed to require minimal machining, these bare engine blocks are engineered to suit a wide range of internal component combinations readily available off the shelf.
The block also provides crankshaft clearance for up to a 4.100" stroke, making it ideal for serious naturally aspirated, turbocharged, or supercharged applications. This aftermarket alloy engine block retains compatibility with many standard GM LS off-the-shelf components including camshafts, timing chains, oil pumps, oil pans, and oil filters, helping simplify the engine build process while reducing overall costs.
Material: Cast Aluminum Alloy
Max Bore & Stroke: 4.165" x 4.100"
Cylinder Bore Diameter: 4.125"
Head bolt / stud size: 1/2" upgrade
Cam Journal OD: STD, 2.164"
Cam Location: STD - bearings can be pinned
Deck Height: 9.240"
Fuel Pump: Electrical
Freeze Plugs: STD screw in
Lifter Bores: .843"
Main Housing Bore Size: 2.750"
Main Cap Bolts: 7/16" Upgrade, with splayed outer bolts on main bearing caps
Main Caps: Billet Steel
Oil Filter: STD
Oil Pan: STD
Rear Main Seal: STD 4.527"
Serial No. Location: Left Front & Main Caps
Starter: STD
Timing Chain / Gears: STD
Timing Cover: STD
