Chevy Bowtie Cylinder Heads

Chevy Bowtie Heads

Like the Chevrolet Vortec Bow-Tie head, this original Bow-Tie head features no heat riser passage, induction hardened exhaust seats and is machined for screw-in studs.

Chevy Bow Tie Head

The work-horse Bow-Tie head has been around forever, or at least since the early 1980’s. In stock form, or with just a good valve job, it kind of sucks.  However, when modified ( ported ) correctly, it is an excellent cylinder head. If you want to run upfront, modifications to this head are vital to getting more power out of the motor.

A stock Bow-Tie head flows 212 cfm intake and 140 cfm on the exhaust. With our “Undercover Porting” air flow is increased to 235 to 248 cfm intake and 160 to 175 cfm exhaust.   On a motor running 7,000 rpm the difference from a stock Bow-Tie to an “UnderCover Ported” head is easily 25 horsepower.

We can also modify your new or used Bow-Tie heads.

We have a variety of cast iron and aluminum intakes for Bow-Tie heads. In many applications, the track rules may mandate a specific intake manifold. Whatever the case, we can supply and fit the correct intake for the Bow-Tie heads.


Complete Bow-Tie heads with “Undercover Porting“. Assembled with 11/32” stainless steel valves, flat tappet springs, spring locators, steel retainers, machined locks, rocker studs and guide plates. Flat surfaced to your specifications. 

Bow-Tie castings, bare, with “UnderCover Porting“.

Free Custom Camshaft: With your purchase of a complete set of modified heads and a matching, modified intake, we will supply a custom ground flat tappet camshaft designed specifically for your application.


Cylinder Head Design Form: Fill out our online form for a recommendation and pricing on a set of heads built specifically for your application. Also, here is a link to more detailed information on our Complete Cylinder Head Assemblies. Cylinder Head FAQs

Sending your cylinder heads to us for modifications? Check out our head shipping tips.

Recent Posts