Chevrolet Performance 12558060 Cylinder Heads, SBC Vortec Engines
Chevy Small Block V8, Assembled Cylinder Head Style, Cast Iron, Straight Spark Plug Style
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These cast-iron Vortec cylinder heads are from Chevrolet Performance are designed to fit Small Block Chevy Vortec engines. These heads come completely assembled and ready for install.
- Completely assembled with 1.940"/1.500" valves
- Uses bare head 12529093
- 64cc combustion chamber
- Straight spark plugs
- No heat risers
- Requires Vortec-specific intake manifold
- Can be machined for 2.020"/1.600" valves
- Rocker arm studs can be pinned or drilled and tapped to 3/8"
- Valve spring seat diameter is 1.280
- Casting number 10239906 or 12558062
Note: Camshafts with more than 0.475" lift require machining valve guide bosses and checking valve seal to valve spring retainer clearance
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Q & A
Tim talks about the new Edelbrock powder coated cylinder heads and provides a little history on Federal Mogul heads.
Tim shows off our aluminum cylinder heads for 348-409 Chevys.
In part 2, you will read about the Generation 4 small block series of V8s that share the same platform as the Generation 3 discussed in part 1.
Trying to decide which power plant to use in your latest project? Here's a quick guide of modern V8 engines for hot rodders to consider.
Illustration showing the various styles of engine heads you may encounter on the Small Block Chevy engine.
Engine Cylinder Numbers
Tim M. has tried to stay true to the vintage route, but sometimes, exceptions must be made. For example, the original oiling system's paper element and canister are functional, but an upgraded system will be more reliable.