Equal length vs regular shortie headers

[87GT Drop Top]

Thanks for the input guys. I really apperciate it. I've only been on the board a short time and have learned a lot. Keep the info coming.

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[87GT Drop Top]

Originally Posted by Redline5.0

Basically what you're dealing with a cost/benefit analysis -

Regular shorties are FINE for stock applications. They dont (usually) require changes to the h-pipe/cats, they're (usually) easier to install, and they're cheaper.

TUNED shorties are more commonly used in applications where the owner is trying to squeeze more ponies from the engine.

Tuned shorties use primaries that are equal length, and, as such, cause the exhaust gas pulse width to end on a node, rather than an anti-node/mid extension. This helps with exhaust gas scavenging.

Shorties used without a complete air tract (intake, heads, headers etc.) defeat the purpose of tuned headers. As the air/exhaust speeds up and slows down as it moves through the motor it kills the positive linear acceleration curve that would otherwise be obtained through the use of a polised system.

/physics.

So in plain english you are saying the regular ones are fine for my application?

[Redline5.0]

Originally Posted by 87GT Drop Top

So in plain english you are saying the regular ones are fine for my application?

You wont get anything noticeable over what the regular shorties will give you.

[08 Bullitt 2310]

I have long tubes,but can't compare the differences because I haven't run anything else back to back with them.They sound very nice though.My neighbors appreciate them and the off road x single chamber flow combo.

[mjr46]

I'm gonna take the Lt's off on my vert and go to shorties, someone but some bbk 1 3/4's on my mild;y modded vert, and they look way out of place

[grnstang]

equals arent too bad to install and they look sweet