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post #1 of 25 (permalink) Old 02-06-2010, 05:26 PM Thread Starter
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exhaust manifold options

ok i have the stock setup i believe
stock manifold to the y pipe with 2 cats and then the 3rd where it joins and no mufflers

if i change the exaust manifold to a mid length or long style would i need complete new piping

or if i get some shorty headers would it work with what i have

and i have another question after my cats its nothing but pipe i have no mufflers
my father says i need mufflers and he wants me to get one of those square mufflers for the middle of the pipe but wouldnt some muffler exauhst tips do the same thing

i really dont think you need them
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post #2 of 25 (permalink) Old 02-07-2010, 02:10 AM
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Only one company makes headers worth having on theses cars they are mid length they require modification of the exhaust cats and back, it's easier just to redo the who damn thing at that point the factory pipe is smaller then the collector anyway.

There are no long tubes that fit the 4.6 thunderbird without steering shaft modifications, a hammer, welder, cut off wheel, and a lot of time/patience.

JBA and SS Autochrome both offer direct fit shorties that replace the factory manifolds with no other modifications but they aren't worth much if any performance gains, they are over priced, and they are known for cracking at the collectors on number 4 primary tubes on the passenger side.

Another option to consider would be having your factory cast iron exhaust manifolds ported and ceramic coated by Preston at braincoating. He offers mild and wild port jobs and coating options.

Regardless of what you choose grab some Percy's dead soft copper gaskets and stage 8 locking header bolts along with a decent set of highflow cats, from that back along with the header/manifold of your choice any decent exhaust shop should be able to fab you up a nice true dual exhaust system or check out mandrel bends exhaust kits for the tbirds.

Hope this was helpful. Anything else try searching the exhaust forum.

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-2001 White Ford F-250 Super Duty 6.8 V10, 4-door, 4x4, Limo Tint, BFG KO2's, Bilstein 7100 Remote Reservoir Race Bypass Shocks, 6" Spring lift, Kenwood Double Din, K&N Intake, FlowMaster Exhaust
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post #3 of 25 (permalink) Old 02-07-2010, 02:55 PM
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Shorties are a total waste of time and $$.

That is all.

Delete my account.
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post #4 of 25 (permalink) Old 02-07-2010, 03:25 PM Thread Starter
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are those mid lengths the kooks

would getting a ported stock shorty be around the same in performance

which would be cheaper and which more gains
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post #5 of 25 (permalink) Old 02-07-2010, 05:19 PM
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The kooks offer more gain at a premium, ported manifolds offer some gain but its less expensive.

unless you have a supercharger or built up engine the kooks isn't worth it

Instead look at your ball joints and bushings and ensure your car is running in tip top form before you blow dough on a 10 hp up grade. Do a PI intake swap and tune, youll make more power.

Spinning pies like wheels.

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post #6 of 25 (permalink) Old 02-07-2010, 08:15 PM
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I dunno about for the 4.6 but I do know that for the 3.8 sc the 94/95 stock exhaust manifolds when ported will outperform the kooks mid-length headers by a substantual amt. Something to look into... Just my .02

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post #7 of 25 (permalink) Old 02-13-2010, 12:07 AM
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hello everyone

anyone need shorties?
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post #8 of 25 (permalink) Old 02-13-2010, 02:04 AM
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I dunno about for the 4.6 but I do know that for the 3.8 sc the 94/95 stock exhaust manifolds when ported will outperform the kooks mid-length headers by a substantual amt. Something to look into... Just my .02
Uh, based on what? That hasn't been my experience.

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post #9 of 25 (permalink) Old 02-13-2010, 03:22 PM
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Originally Posted by Chris_Murder View Post
Only one company makes headers worth having on theses cars they are mid length they require modification of the exhaust cats and back, it's easier just to redo the who damn thing at that point the factory pipe is smaller then the collector anyway.

There are no long tubes that fit the 4.6 thunderbird without steering shaft modifications, a hammer, welder, cut off wheel, and a lot of time/patience.

JBA and SS Autochrome both offer direct fit shorties that replace the factory manifolds with no other modifications but they aren't worth much if any performance gains, they are over priced, and they are known for cracking at the collectors on number 4 primary tubes on the passenger side.

Another option to consider would be having your factory cast iron exhaust manifolds ported and ceramic coated by Preston at braincoating. He offers mild and wild port jobs and coating options.

Regardless of what you choose grab some Percy's dead soft copper gaskets and stage 8 locking header bolts along with a decent set of highflow cats, from that back along with the header/manifold of your choice any decent exhaust shop should be able to fab you up a nice true dual exhaust system or check out mandrel bends exhaust kits for the tbirds.

Hope this was helpful. Anything else try searching the exhaust forum.

Now that's what I call an informative answer! Well said....well written.

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post #10 of 25 (permalink) Old 02-14-2010, 03:20 AM
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Quote:
Originally Posted by Sideoiler View Post

Now that's what I call an informative answer! Well said....well written.
Thanks sideoiler.

-1996 Pearl White Thunderbird 4.6 Sport 4v with many mods:
Current Best: 13.583 @ 103.74 10/2014.
227hp/241tq measured on calibrated mustang dyno, tested at full vehicle simulation with inertia enabled, no number skewing.
-2001 White Ford F-250 Super Duty 6.8 V10, 4-door, 4x4, Limo Tint, BFG KO2's, Bilstein 7100 Remote Reservoir Race Bypass Shocks, 6" Spring lift, Kenwood Double Din, K&N Intake, FlowMaster Exhaust
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post #11 of 25 (permalink) Old 02-21-2010, 09:04 PM Thread Starter
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post #12 of 25 (permalink) Old 02-22-2010, 02:13 AM
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would those fit without any modification?
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post #13 of 25 (permalink) Old 02-23-2010, 07:08 PM Thread Starter
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no idea
i think so

looking at these
i dont see why not

Last edited by msp252; 02-23-2010 at 07:15 PM.
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post #14 of 25 (permalink) Old 02-23-2010, 08:35 PM
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The 3/4 length KOOKS I had on my 97 were made for the mn12 body cars. Very different from the mustangs because of the strut towers. I loved my KOOKS, fit perfect and I fabed up 3 different exhaust systems to them. They are quite expensive but if you have the money and really want to do it right for hp gains, they are the way to go.

Last edited by tbirdsc14; 02-25-2010 at 06:21 PM.
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post #15 of 25 (permalink) Old 02-24-2010, 12:25 PM
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those ones for 200 bucks look pretty good
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post #16 of 25 (permalink) Old 04-09-2010, 02:44 AM
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hey guys will the headers listed above on ebay really fit without modification? thinkin on snaggin them.
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post #17 of 25 (permalink) Old 04-09-2010, 02:47 AM
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oops stoopid question, but still elaborate please.
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post #18 of 25 (permalink) Old 04-09-2010, 03:52 AM
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Those probably won't work without modifying the steering shaft, the drivers side header, or both.

-1996 Pearl White Thunderbird 4.6 Sport 4v with many mods:
Current Best: 13.583 @ 103.74 10/2014.
227hp/241tq measured on calibrated mustang dyno, tested at full vehicle simulation with inertia enabled, no number skewing.
-2001 White Ford F-250 Super Duty 6.8 V10, 4-door, 4x4, Limo Tint, BFG KO2's, Bilstein 7100 Remote Reservoir Race Bypass Shocks, 6" Spring lift, Kenwood Double Din, K&N Intake, FlowMaster Exhaust
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-2005 White GMC Sierra 3500 6.6 Duramax, Dually, 4-door, 4x4, Limo Tint, BFG Commercial T/A's, Rancho RS9000XL Shocks, Kenwood Double Din, K&N Intake, Banks Monster Exhaust
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post #19 of 25 (permalink) Old 04-09-2010, 05:30 AM
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so are there no shorty headers out there the JBA ones are junk the SS auto ones are junk. what about the ford racing shortys? or should i just quit my *****in and just get a pair of 96/97 exhaust manifolds ported?
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post #20 of 25 (permalink) Old 04-09-2010, 03:18 PM
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so are there no shorty headers out there the JBA ones are junk the SS auto ones are junk. what about the ford racing shortys? or should i just quit my *****in and just get a pair of 96/97 exhaust manifolds ported?
Answer is in bold. Are you needing any extra flow? How modified is the engine? And no... a CAI does not count.

Needs more stall.
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post #21 of 25 (permalink) Old 04-09-2010, 03:41 PM
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im thinkin ahead im goin to get the PI head swap with a low boost but for now stock. i dont know if the ported exhaust manifolds would be appropriate. or headers they look nicer
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post #22 of 25 (permalink) Old 04-09-2010, 06:35 PM
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If you're going to have manifolds/headers with unequal length primaries in the end anyway, you may as well go with the ported manifolds then. Chances are very good they'll outflow the shorties available for your app.

But again.....shorty headers are a complete waste and for more reasons than just one.

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post #23 of 25 (permalink) Old 04-10-2010, 01:41 AM
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post #24 of 25 (permalink) Old 04-10-2010, 02:37 AM
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ogbird95

I have a set of extreme ported and ceramic coated manifolds as done by Preston at braincoating they are pretty nice parts PM me if you are interested. Never been used either so they look really good.

Spinning pies like wheels.

DD driving my 20 year old project

Now with new ball joints...again
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post #25 of 25 (permalink) Old 05-05-2010, 12:30 PM
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hey i got those ported mani's going on a set of 03 pi romeo heads w/ a light port. hope they sound good
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