header types

[S.L.A.B]

What is the difference between "shorties" headers and long tube headers? (performance wise)

 

[Splatmaster527]

Short headers tend to give more torque and throttle response whereas long headers give you more top end if i remember correctly

 

[S.L.A.B]

o ok i was looking at some shorties at http://lpparts.com/store/page7.html. I have herd that these LPP headers are good. But for $250 do these "GM Truck Shorties 99-11" have everything i need to be installed on my 2005 slt yukon?

 

[AtomicHoe094]

I say go longtube or nothing. youll be happier in the end and doing it once. With the aftermarket ypipe and long tubes will make a great addition in power.

 

[srt6.7]

anyone know of a kit that has cats so i can pass emission without swapping headers and such?? I was contemplating shorties cause the bolt up to the stock cat but if i can get a nice longtube and catted y-pipe id be game.

 

[AtomicHoe094]

youll probably then have a custom shop bend and make the ypipe. you dont need cats at the ypipe you can them further down the stream btw

 

[Physh1]

anyone know of a kit that has cats so i can pass emission without swapping headers and such?? I was contemplating shorties cause the bolt up to the stock cat but if i can get a nice longtube and catted y-pipe id be game.

Not gonna happen. Getting long tubes w a y-pipe installed is tight enough. Never gonna get cats in there too. Depending on where you live for smog purposes having cats in a non-oem position can be reason for failure.

Cameron

 

[blueflamed03]

or get longtubes and bolt back on stock Y, longtubes add lowend...

 

[01Konvict]

does anybody have any dyno graphs from shorty and longtube HP/TQ gains? It would be nice to see if the longtubes are worth the extra money for a mostly stock engine.

 

[JennaBear]

Shorties are pretty darn close to stock.