408 Need Long tube header, 3 inch exhaust help

NewToFord · Jan 28, 2012

I am putting a 408 in my 93 lx. I am using the stock crossmember, and the car will be fuel injected. I want to go with a long tube header, and a 3 inch exhaust from the header back. My heads are 205 TEA Twisted wedge. The car will have a tremec tko 600 trans. I am having touble finding the right combo. I think I should run a 1 7/8 header, but I can only find 1 3/4. I looked at mac, bbk, I cant find flowmaster anymore. Am I missing something? Also I want ceramic coated, and pointed talpipe, not the dumps. I know I'm being picky but somebody must have an answer for me. Thanks

Jason 302 · Jan 28, 2012

I would contact Hooker, Kooks, or Accufab and tell them your needs

reldla1996 · Jan 28, 2012

I went with the 1 7/8" ceramic coated kooks, but that forced a custom H pipe (could have been X) to mate to the kooks. I had a 3" Bassani X pipe before the kooks, and still have 3" Flowmaster brushed stainless slash cut tailpipes (LX style) at the back end.

Rick 91GT · Jan 29, 2012

I would also look at Accufab, Kooks or Stainless works (personally Id go stainless even if you decided to coat them) Youll end up making a custom X or H, but that really isnt a huge deal. Flowmaster, MAC and a few others make a 3" cat back...it is extremely tight and tire clearance can be an issue. If you have a anti-roll bar youll need something custom in most cases for proper clearance.

S&B · Jan 29, 2012

on my notch i used LT's into a 3" dr. X Pipe then 3" mufflers and put 2 1/2" flow master pipes out the rear. Put the car on the dyno, did one pull with the tails and one with out. And there was no loss so no real restriction to going to the smaller pipe out the car. put down 700hp so it was really moving air.

90lxcoupe · Jan 29, 2012

accufabs.

NewToFord · Jan 29, 2012

S&B said:
on my notch i used LT's into a 3" dr. X Pipe then 3" mufflers and put 2 1/2" flow master pipes out the rear. Put the car on the dyno, did one pull with the tails and one with out. And there was no loss so no real restriction to going to the smaller pipe out the car. put down 700hp so it was really moving air.

Which LT's did you have? I was wondering if there would be any gain putting on a 3 inch cat back instead of the 2.5. I am glad that you dynoed it, and now I am rethinking the 3' cat back. I think it is still beneficial to do a 3' mid pipe, dont you?

90lxcoupe · Jan 29, 2012

The dyno will only tell you so much. Taking a catback off will not always show a increase in HP, but most of the time the car will be faster at the track with less restriction.

S&B · Jan 29, 2012

i used lt's for my 331 not 351w platform so that probably would not help you much

bentley429isBAC · Jan 30, 2012

I use kooks but they do hang kinda low. I believe accufabs collectors are tucked up a bit more.

NewToFord · Jan 30, 2012

Anybody use Macs? i called Kooks and they are a little pricey. Mac makes the entire system from headers to tailpipes. anybody try them?

bentley429isBAC · Jan 30, 2012

Kooks is pricey for a reason

NewToFord · Jan 30, 2012

Ok here is my research
Accufab will make me a set pricing is average around $500, but are not ceramic coated. I need to have them done if I buy them.
Kooks are real expensive. $1200 for just the headers.
Mac I can buy ceramic coated headers, and h pipe and cat back for $1200. Everything is 3 inch
BBK, Around $500, their headers have a 3 inch collector, but then their x pipe goes to 2.5. They are not sure what aftermarket x pipe will match up to their headers.
So I'm kind of leaning towards the Macs. I have heard they are tough to install, but then again the car will only have the motor in it, I will put the headers in once I drop the motor in.
Any thoughts?

bentley429isBAC · Jan 30, 2012

Lay the headers in the engine compartment then drop the engine in. A lot easier with longtubes that dont separate like the kooks do. I dont blame you with not buying the kooks though. Got mine used for $350, was pretty happy with that. If you go with the Mac, get a X pipe, not a H

Jason 302 · Jan 30, 2012

I'm pretty sure you have to raise the engine at least a couple inches for any sort of longtubes to fit. My BBK's are like that

NewToFord · Feb 8, 2012

Ok I found out the Macs may not clear my tremec tko600 trans, so now I think I am going to go with accufab. What midpipe did you guys use? And how did you mate it up to the headers? Accufab is telling me that I need a muffler shop to hook the mid pipe to the collectors.

88LX5.Oh · Feb 8, 2012

Jason 302 said:
I'm pretty sure you have to raise the engine at least a couple inches for any sort of longtubes to fit. My BBK's are like that

I put Flowtech equal length long tubes in my car and didn't have to raise the motor any. I just went up from the bottom and they went right in.

90lxcoupe · Feb 9, 2012

NewToFord said:
Ok I found out the Macs may not clear my tremec tko600 trans, so now I think I am going to go with accufab. What midpipe did you guys use? And how did you mate it up to the headers? Accufab is telling me that I need a muffler shop to hook the mid pipe to the collectors.

I bought a 3" universal x pipe kit from summit and fitted it myself. Also, i would bet you the accufabs will end up costing you closer to $700 by the time you are all said and done. You are gonna want to get the headers with adapter plates, and im pretty sure accufab charges to weld the headers complete to the collector. My accufabs fit well but they also hang pretty low. Ive heard that you can use a 8.2 deck kooks on a 9.5 deck motor and they tuck up nice. Maybe keep your eyes out for a used set, they are out there, just gotta be patient. I plan on trying to use my 8.2 deck accufabs on a 9.5 deck motor im building soon

408 Need Long tube header, 3 inch exhaust help

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S&B

I hate my CT. :(

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I hate my CT. :(

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