Custom Cylinder Heads

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We offer custom cylinder head machine work for the Cummins 12 and 24 valve B series engines. From simple resurface and valve job to full custom removal of the stock intake plenum for custom intake manifolds and full port and polish work. General machined heads come in four... levels.

Level Flow Increase Machine Work Description

1. STOCK Inspection, surface, *valve job, cleaning and reassembly.

2. 15% Same general machine work as in level 1 plus pocket porting.

3. 25% Includes level 1. And 2. Machine work plus more extensive

Porting and valve/valve seat area machine work.

4. 35% Competition Only. Same machine work as level 1-3 plus

More port work. 12 valve head only.

* Valve guides are as needed and are extra.

**Valves, HD valve springs and titanium retainers and hardened keepers are extra.

We can also machine for fire rings if needed. Please note that the cylinder head has to be straight (.002”or less) in order to cut for fire rings. Also fire rings are not a cure for warped blocks.

Machining off the intake plenum for installing a ZZ or other after market intake manifold is also available along with porting/polishing the intake runners.

We also offer Cometic head gaskets as an alternative to stock head gaskets and fire rings.

Call for pricing and more information.