hat what point do you outgrow single exhaust?
Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
hat what point do you outgrow single exhaust? Im fixing to either have a new Y pipe made, or completely redo my exhaust from the headers back…
At what point do you outgrow single exhaust? I have a 5.7 LS1 with patriot stage 2 LS6 heads, 231/239 111+2 cam, a ported fast 90mm intake, pacesetters, functional ram air and full bolt on’s all the way around it. Last time on the dyno it put down 430 to the ground. Since then ive added the ported fast 90mm. it also has 2 nitrous kits on it and eventually will hit a 250 shot. I know I am leaving some power on the table with my current Y pipe. It was the first gen pacesetter setup and the drivers portion of the ORY T’s into the passenger side instead of merging into the exhaust as a Y. here are some insane paint skills for illustration:tvhaha:
anyways, I can either build the Y pipe that I want to free up some power, or go for a true dual setup with an X and some 18” long dynomax bullets (biggest they make). Am I making enough power to justify a 3” true dual x-pipe setup?
At what point do you outgrow single exhaust? I have a 5.7 LS1 with patriot stage 2 LS6 heads, 231/239 111+2 cam, a ported fast 90mm intake, pacesetters, functional ram air and full bolt on’s all the way around it. Last time on the dyno it put down 430 to the ground. Since then ive added the ported fast 90mm. it also has 2 nitrous kits on it and eventually will hit a 250 shot. I know I am leaving some power on the table with my current Y pipe. It was the first gen pacesetter setup and the drivers portion of the ORY T’s into the passenger side instead of merging into the exhaust as a Y. here are some insane paint skills for illustration:tvhaha:
anyways, I can either build the Y pipe that I want to free up some power, or go for a true dual setup with an X and some 18” long dynomax bullets (biggest they make). Am I making enough power to justify a 3” true dual x-pipe setup?
TECH Enthusiast
Joined: Jan 2007
Posts: 732
Likes: 0
From: OHIO
A single 3 inch exhaust will easily support up to 500 RWHP, maybe more depending on the muffler. I don't know if changing over to true duals is worth it on a H/C car, unless you're doing in for sound.
you have plenty of room for true duals if its your truck...NO REASON not to
if for no other reason than it will sound better and depending on where you get it done it will cost about the same
you are guaranteed to pick up power over what you have
if for no other reason than it will sound better and depending on where you get it done it will cost about the same
you are guaranteed to pick up power over what you have
TECH Resident
Joined: Sep 2009
Posts: 859
Likes: 2
From: Frozen Tundra, WI
This will get you into the range of the correct pipe size...
http://www.mk5cortinaestate.co.uk/calculator5.php
Remember, this would be for mandrel bends not compression.
http://www.mk5cortinaestate.co.uk/calculator5.php
Remember, this would be for mandrel bends not compression.
Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
thanks for the help guys. i decided to swap out my 1 3/4 pacesetters for some 1 7/8 TSP headers and run a mandrel 3" true dual setup with a X pipe. 2 of the biggest dynomax bullets i can find. hopefully i will be happy with the results.
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