Dyno headers

Phil, I'm sure that if I did a custom set of dyno headers where the primaries came straight out of the ports for several inches before bending back, there would be a substantial increase in power. When I did my Car Craft article, I tested several different sets of headers on the 390 stroker motor. The ones that worked the best were the cheapo truck headers, but they had the advantage of a 4 inch straight section of pipe coming out of the exhaust port before bending down.

For the testing, though, I'd rather try to duplicate what would be in a typical Mustang, Fairlane, or Galaxie installation. In most cases, especially with the shock tower cars, the pipes bend down right at the port. So, I'm sticking with that configuration in order to provide more realistic data.

Jay Brown
1968 Shelby GT 500 Convertible, 492" 667 HP FE
1969 R code Mach 1, 490" supercharged FE, 9.35 @ 151.20, 2007 Drag Week Runner Up, Power Adder Big Block
2005 Ford GT, 2006 Drag Week Winner, 12.0 Daily Driver
1969 Ford Galaxie XL, 460 (Ho Hum....)
1964 Ford Galaxie 500, 510" SOHC