8.1 Vortec
Has anyone had problems with exhaust manifold leaking or cracking.
Forum Discussion
IAMICHABOD wrote:
The other fix was to put headers on,not an option here in California due to smog regulations.
There are approved headers and other aftermarket performance parts available that do meet the Cali requirements.
https://www.smogtips.com/aftermarket-performance-parts.cfm
