Depends on the engine. The 5.0/5.8 engines do benefit from headers much more than the 4.6/5.4 because the 5.0/5.8 stock manifolds suck. Figure that the 5.4 engine gets the same manifolds as the Lightning, and the Lightning owners have proven that shorty headers do nothing for their power output. Personally, I think money would be better spent on doing a match-port job on the stock manifold, and get them ceramic coated inside and out. That will keep the heat down in your engine compartment, and keeping the heat up inside the manifold actually helps the flow. I'd put money on it that this would make better torque numbers than a set of shorty headers.

 

I just ordered a set of pacesetter long tube headers!, I guess the dyno will tell what the gains are

 

Cool, curious to see your results. Keep us posted, hope your install is easier than mine was.

 

Man I sure hope they go with no snags,... I got a thing from summit said my headers are on back order untill Aug 30 so I gues I'll have to sit and wait

 

I chose JBA because they are CARB certified and i'm in Cali. They are also heat coted bith inside and out. SOme only heat coat outside. They are lighter then OEM cast but not as light if they were stainless. You can not mount long headers on 04-06 with 5.4l v8. Long headers are for street trucks anyhow. You want a mid range rpm increase from shorties on a 4WD.

 

I think you have that backwards. Long tubes will help build more torque than the shorties. I was just reading through some of the other posts and they covered that.

 

Yeah, in CA long-tubes mean you lose the pre-cats which is deninitely not CARB approved. But some shorties are as noted.

 

I also have to emission testing so I went and got a set of Magnaflow highflow cats just to stay legal

 

Keep us up to date.

 

Will do I hope to do the install the end of sept and yes there will be a lot of pics!

 

No, I think jeepnford explained that incorrectly. Long headers will yeild more power overall, thus you can say more torque as well but it's power curve is up top and that's why it's not recomended for towing. Short headers increase power in the mid range and that is the correct torque curve for street and twoing use. If you want race only and don't need cat's then use long ones.

 

well I got my Pacesetter headers today along with the Xpipe, So now I have everything needed to do the install, I'm going to start on the 15th I'll have lots of pics stay tuned