Head Porting basics

To add to Bill/smallblock's comment:

Get the gasket that works for your exhaust/headers. There have been issues using a FelPro/Victor exhaust gasket with tti headers. The sealing bead on the tti's isn't really in the correct spot on #1, 2, 7 & 8 compared to the gasket. Open up the port to the gasket and you'll have a serious leak. 340sFastback had an issue with this on his ede's/tti when they were ported to the FelPro size.