Mahle / Clevite 1178BS
Head gasket for Chevrolet Small Block / SBC engines. 4.100” / 104.14 mm bore and 0.040” / approx. 1.02 mm compressed thickness.
Mahle / Clevite 1178BS is a cylinder head gasket for Chevrolet Small Block / SBC engines. The 4.100” / 104.14 mm gasket bore and 0.040” / approx. 1.02 mm compressed thickness make it suitable for many classic SBC builds after bore, block and cylinder head compatibility has been confirmed.
Application / fitment
Designed for Chevrolet Small Block engines, including 265 / 283 / 302 / 305 / 307 / 327 / 350 / 400, depending on bore size, coolant passage layout and cylinder head version.
- Chevrolet Small Block / SBC 265 / 283 / 302 / 305 / 307 / 327 / 350 / 400
- applications requiring a 4.100” / 104.14 mm gasket bore
- classic Chevrolet V8 rebuilds and performance builds
On SBC 400 engines, pay particular attention to steam holes and compatibility with the block and heads. Check surface flatness, target compression ratio and torque procedure before installation.
Technical information
- type: cylinder head gasket
- gasket bore: 4.100” / 104.14 mm
- compressed thickness: 0.040” / approx. 1.02 mm
- engine family: Chevrolet Small Block / SBC
- sold for one cylinder head — V8 engines normally require two head gaskets