The term "Anti-Reversionary" refers to the manner in which this design prevents spent gases from re-entering a cylinder head. The extended valve overlap of competition grinds (the period when both the ...

If you are serious about your all-motor power, then a custom header is going to be mandatory for your project vehicle. By this point your motor is built to the limit or near-limit. You have high ...

Along with a better-flowing intake and exhaust system, headers are among the first bolt-ons that any naturally-aspirated believer has got to consider. Together they help eliminate restrictions within ...

It's an accepted part of hot rodding lore that headers help make more power and torque on any engine versus the typical stock cast manifold, but do you know why? It's all about flow, right? Well, yes ...