The Truth About Swirl Port Heads and Horsepower
If you're digging through a junkyard or tearing down an old TBI Chevy, you're eventually going to stumble across a set of swirl port heads. These things have a bit of a reputation in the gearhead community, and honestly, it's not always a great one. Depending on who you ask, they're either the best thing ever for a work truck or a total boat anchor that belongs in the scrap bin. The truth, as it usually does, lies somewhere in the middle. ...