Shorty Headers

dirty white boy said

if ya watch the engine masters where thay try different length torque tubes its easy to see why headers are better,.. shorty's dont have any length of a collector, and a regular header still dose better with 26 inch's added to header collectors, its pretty much a no brainer to me! the longer the collector the better itll do up to 26/28 inches added....DWB

Click to expand...

Just like header selection and design, the collector extension length also varies with setup. Compression, cam, heads (flow), intake - it all matters a bunch. Some combos work best in the 12-18" range, some want more, some want less.

The enginemasters stuff just goes to show that unless you're replicating a proven build, dyno time is well worth it. It's also worth experimenting with a few things once the engine is on the dyno too, things that can be replicated in the car - that way the dyno reflects reality.