Swirl port SBC heads

by: Cobalt327, Mortec
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Overview

Swirl port SBC heads are often overlooked for any king of performance use. This page will weigh the pros and cons of using them in a "street performance" application.

History

Casting numbers and ID

The 5.7L TBI truck engines used c/n 14102191 and 193 heads.

Design limitations

TBI swirl-inducing vane

TBI swirl port vane.

L30 5.0L Vortec head

305 Vortec L30 casting number 12558059.

305 Vortec L30 casting number 12558059 chamber

305 Vortec L30 casting ID.

Modifications and porting

Resources

• SBC head casting number go-to site
• MorTec archived