Do tri-y headers make more power?

This means that if the collector lengths are right for that engine package and the tube pairings match up well with the firing order, Tri-Y headers can produce improved power over similar four-into-one headers.

What are tri-y headers?

Invented by Doug Thorley Headers, the Tri-Y header is designed to match the synchronization of the engine firing order, thereby maximizing exhaust scavenging. This design creates the optimum torque and greatest horsepower gains in comparison to any other design.

What are 4 1 headers?

4-1 headers are designed so that all 4 exhaust pipes merge into one. In most dyno tests, this produces the most top end power since it usually offers the best flow characteristics for the engine at high engine speeds.

Are stepped headers better?

Stepped headers give the benefit of a higher velocity exhaust gas at the cylinder through a smaller tube ID, while allowing the benefits of higher flow capabilities further downstream on the larger tube ID.

Are Tri-Y headers long tube?

Tri-Y Long-Tube: Tri-Y headers came to popularity when they were used by Shelby for the GT350 Mustangs. The tri-Y design combines a short primary that is paired with another cylinder that is synchronized in the firing order into a 2-into-1 collector that steps to a larger diameter secondary tube.

Are Tri-Y headers better?

Tri-Y style headers do a good job maintaining flow velocity. Exhaust from one tube rushing past the “Y” can help scavenge air from the other tube. Tri-Y headers often make better low-end torque than similar 4-1 headers.

Who makes Tri-Y headers?

Doug Thorley Headers
For 60 years, Doug Thorley Headers has been making premium American-made components and the Tri-Y has led the charge.

Do Tri Y headers work?

Tri-Y style headers do a good job maintaining flow velocity. Exhaust from one tube rushing past the “Y” can help scavenge air from the other tube. Tri-Y headers often make better low-end torque than similar 4-1 headers. Racing vehicles with an open exhaust sometimes run collector extensions.

What is a 421 manifold?

A 4-2-1 exhaust system is a type of exhaust manifold for an engine with four cylinders per bank, such as an inline-four engine or a V8 engine. Compared with a 4-1 exhaust system, a 4-2-1 often produces more power at mid-range engine speeds (RPM), while a 4-1 exhaust produces more power at high RPM.

What size headers do I need?

Recommended Header Primary Tube Diameter

Horsepower Output	Primary Diameter
200-325 hp.	1 1/2 in.
275-425 hp.	1 5/8 in.
400-500 hp.	1 3/4 in. or 1 7/8 in.
500 hp. or more	2 in. or larger

What kind of headers should I get?

Full-length headers help produce more overall power with good power in the low- and mid-rpm ranges—right where most street-driven vehicles can use it the most! The longer primaries also reduce the chance of escaping gases getting drawn back into another pipe.

What headers does Nascar use?

NASCAR announced today a new multi-year agreement with Flowmaster designating it as the exclusive NASCAR Performance partner for performance exhaust system components, which include performance mufflers, catalytic converters, headers and installation accessories.