I plan to get some longtube headers for my truck next week but I have a few questions.

Fitment- how far down the stock exhaust am I going to have to cut so I can weld the longtubes onto the exhaust? Will I have to relocate the cats? Am I better off deleting the cats?

Performance- Besides the stunt factor, I want the headers to help out my low to midrange torque because I tow a decent sized trailer with my supra to and from the track. The track is about 40 miles away. Are longtubes the best headers for my needs?

 

You will have to cut and refab the Y pipe. I would keep the cats. No real gain by removing them except the exhaust will stink and you will have to do some work to keep the check engine light off. A good exhaust shop should be able to relocate the cats in the Y for ya.

 

^^^^ All correct. Cats will have to get pushed back and a new Y unless you are going duals. I love my LTs and no cats though.

 

You might (and I do say might) sacrifice some lowend grunt with the longtubes. They will improve your mid range and overall tq by quite a bit but the lowend with stock gears you might loose a little.

Personally I love my LT's with cats and new Y. Sounds better and doesnt smell and got more lowend from adding them back in than when they were off.

I dont tow though, I race, so I cant really tell you how they perform there.

 

I noticed some low end torque loss with my long tubes, not major but noticeable. Did the install myself, but ended up paying a shop to cut my cats back in and I spliced and re-wired the O2 sensors back in. I used about 18" of wire, have a little extra, so I'd say the cats are pushed back about 14" give or take.

Dyno numbers I have seen on similar installs, less the cats, actually show peak torque to actually be higher than with the cats, but the torque curve moves up a bit in the rpm band so that down low you get the impression of having more torque with cats.

 

I talked to the guy thats gonna weld up everything and hes tellin me the longtubes are gonna be a PITA. I found some other pacesetters on Ebay and wanna know if they will work on my truck. Will I have to relocate stuff with these headers?

http://cgi.ebay.com/ebaymotors/Paces...item2eb3d9292f

 

Sh*t, it ain't much work to relocate the cats. The shop that I had cut my cats back in after I installed the LT headers charged me $75. Took them less than an hour.

I would have done it myself, but after being under the truck to do the headers I just felt that without the truck being up on a lift I wasn't going to be able to get good welds all the way around. I'd say 90% of us who have done headers have done long tubes.

You get considerably more gains with the long tubes over the mids, so if it was me, I'd be looking for someone who wasn't lazy to do the install. Also, there is NO WAY I would buy black painted headers, they'll be rusted out in a couple of years (less in salt states). Not only will ceramic coated last much longer, but they'll keep engine bay temperatures down...

 

And for me, my Pacesetter LT install wasnt hard. After I took down my old manifolds, I simply held the LT in place and lined up the gasket and put the first bolt in place. Granted, getting that first bolt started was a bit of work because I did everything alone which meant holding the LT in place, getting it lined up with the gasket and using one other hand to get the bolt started. But after the first bolt, everything else fell in place.

 

Thanks guys, I guess Ill find a shop to do it. He was sayin that Id have to get rid of my cutout, run true duals and a bunch of other stuff......does anyone have pics of under their truck after longtube install?

 

And he is still in business why???????