Chevy Vortec Cast Iron Small Block Cylinder Heads

Chevy Vortec Cast Iron Cylinder Heads

 The Chevy Vortec head is an excellent choice for a variety of performance and race applications.

Since its introduction in the late 1990’s there have been a few “versions” of the factory Vortec head.

The current version, available new from Chevrolet, is manufactured in Mexico.

A stock out of the box “Mexico” castings will not perform as well as a stock non-mexican ‘062 or ‘906 Vortec heads. However, it is difficult to find a set of good, used factory non-mexican Vortec heads that are not cracked.

We use the new, Chevrolet Mexico produced casting for applications that require the factory Vortec head. The Chevrolet part number is 12558060.

The new Mexican castings are good, thick heads and can be flat cut to the low 50’s without any issues.

After our “UnderCover Porting” or SST Porting modifications, a modified Mexican Vortec head will flow the same as a modified non-mexican Vortec head. Also, the Mexican Vortec head is brand new and are much less prone to cracking.

A new stock Mexican Vortec head will flow in the 210 to 215 cfm range on the intake and about 145 cfm on the exhaust.

After our “UnderCover Porting” the Mexican Vortec head will flow in the 235 on the intake and 165 on the exhaust.

We have the new Mexican Vortec heads available with various forms of modifications and can modify your used or new factory Vortec heads.



Complete new Chevy Vortec heads  with “UnderCover Porting“.  Assembled with 11/32” stainless valves, flat tappet springs & locators, steel retainers, machined locks, ARP rocker studs and guide plates. Flat surfaced to your specifications.

New Chevy castings with “UnderCover Porting“, machined for screw-in studs and pushrod holes opened. Bare, pair.

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