question is in the title

 

No. LS1 and LT1 long tube headers come off at a different angle.

 

good question because i want to buy the Pacesetter LT but i would like to know excatly how to run them back, since they dont sell a Y pipe for the LT1's.

 

As far as I know they do.

 

http://store.summitracing.com/partde...rt=PSM-82-1161

 

As for the original question. Yes the Y pipe off of a LS1 set of pacesetters will fit your LT1 pacesetter headers. Go look and compare at summit, there identical. What you have to worry about are the ports. LT1's have a "D" port while the LS1's are oval shaped. The headers on a LS1 will not fit on a LT1, vice versa. However, the with the Y pipe situation, you'll be fine.

Hopefully you already have the Y pipe or struck a good deal otherwise just order all the LT1 stuff together. That's why I love summit, they list everything in one shot, not piece mealing everything together.

here's the LS1 y pipe.

http://store.summitracing.com/partde...rt=PSM-82-1163

 

thanks, i didnt know summit had them.

 

so... an ls1 y-pipe fits LT1 pacesetter longtubes?

 

^^no the long tubes come out on a different angle just like Rowdy94 said.

 

That's incorrect.

 

so how does the O2 sensor plug into pacesetter LT? do i need to get 02 extention wires?

 

There is a welded bung that comes in the collectors. If you are handy with soldering and shrink-wrapping, then you can use the extension kit that comes with the PaceSetters.

 

ya i can do little bit of it, thats what i wanted to know. thanks

 

You miss the part in the Summit pic that says: "Image is a representation of this part. Actual part may vary."

LT1 Headers are your standard SBC profile, the LS1 Headers are similar to Big Block Headers for looks.
LS1 Head Exhaust ports are actually Circle shaped, as well as the Truck Head Castings.
The LS6 and LS2 Heads have D-Ports, as well as the LS7 and late model L92 Heads.

 

ahh ok, thanks guys

 

Yeah I tried an LS1 Hooker Y on my Hooker LT1 headers and they did not fit. Not even close.

 

Pacesetter sells Y-pipes... I have one in my car

 

yeah i didnt find them when i looked on there website, but looks like summit has them from "Bones Z28" reply.

thanks though,

BTW: how much of a gain would you expect after pacesetter and Y pipe. 1/4 mile and Hp/tq numbers

 

From Manifolds to LT Headers.. you will notice a big difference. I figure around 30hp.
Here is a pic of the set that came in for my LSX Project. If you can see it, the drivers side it sitting kinda high in the back, that is where it's angled out.

 

ur LT's look nice, what finish is that? do all the coated LT's come like that?