well some of you may have seen my thread a couple weeks back where i said that i was building a full blown bagged and body dropped showtruck on 22's with an ls7.. well i thought up a problem yesterday.. i heard i could run normal pacesetter longtube headers on the ls7 which i had planned on.. but i got to thinkin.. with the truck bein body dropped (to the rockers) i will be driving it just a couple of inches off of the ground.. will i have issues with the longetubes dragging like on the fbodys? if so should i look into some shorty headers? or just stick with the stock headers on the ls7?

 

That LS7 exhaust manifold/header looks like it will outflow any shorty on the market. I'd just stick with that, just my $.02

 

My dynatechs tuck up to the frame, the y-pipe is a little low though. I think the same is true with the pacesetters. Someone posted up some shots from underneath a while back, I think it was Scream.

 

you should be fine..... i know mine are tucked up higher than the frame... so id your worried about clearance on anything it would be the frame...

 

question would be why, keep truck at resonable height and you wont have issues with headers

 

i think scream is running the pacesetters though...

 

There is nothing on the Pacesetter header/ORY setup that hangs below the frame at all

 

because i'm building something i can drive 2 inches off of the ground and drive it hard.. and thats exactly how i'm building it

 

If nothing hangs below the frame rail you should be fine. IMO, I would have a custom set of 1 7/8" headers and exhaust built to handle what the LS7 can dish out. After shelling out serious coin for that motor I wouldn't short change it by putting on the headers you are considering. Either have someone build some custom headers or stick with the factory LS7 manifolds. I can't imagine how bad the port mismatch would be on the LS7 heads versus Pacesetters anyway. Again, IMO...

Here's a pic of the exhaust gasket... the exhaust ports on the LS7 are HUGE!

Bill



Bill

 

I agree. Custom headers will be expensive, but worth it. I think that the factory ls7 manifold would make more HP than a set of 1.75" pacesetters.