For a high-performance street car, at a minimum you want a precision, three-angle valve job with relatively wide seats able to stand up to years of hot rodding. Quickie parts-store valve jobs won't ...

Porting has always been perceived by enthusiasts as some black art that is known only to a select few who have spent years in dark alcoves grinding cylinder heads until they have mastered their ...

1) What is head porting and polishing and how does it work?Porting involves shaping and/or polishing the intake port openings, the inside of the ports, the exhaust ports, the bowl area below the valve ...