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Topic: Factory 5.0 Headers? (Read 1686 times) previous topic - next topic

Factory 5.0 Headers?

Since the engine in my Sport is a S.O. 5.0, I'm thinking about installing some factory 5.0 headers (1 1/2" primaries) and converting to a true dual exhaust. 
I'm wondering though if those factory 5.0 headers would mate properly to a 2 1/2" aftermarket h-pipe.  I thought I read where someone said those headers don't mate well with aftermarket h-pipes.
Anyone have any experience with this?
William

Factory 5.0 Headers?

Reply #1 –
That's exactly what you have to do. If the s on the aftermarket h-pipe are made for the tubular headers, as opposed to the standard passenger car manifolds, it should work. All the aftermarket stuff was made to be compatible with the oem headers ball-and-socket type . The standard passenger car mainfolds (on the SO 5.0) have a more flat  that may cause problems when mated to the ball-and-socket deal.

Factory 5.0 Headers?

Reply #2 –
Quote from: hwy73;327936
That's exactly what you have to do. If the s on the aftermarket h-pipe are made for the tubular headers, as opposed to the standard passenger car manifolds, it should work. All the aftermarket stuff was made to be compatible with the oem headers ball-and-socket type . The standard passenger car mainfolds (on the SO 5.0) have a more flat  that may causes problems when mated to the ball-and-socket deal.


I've never seen factory 5.0 headers up close.  Do you know for a fact that they have ball and socket-style s on them?
William

Factory 5.0 Headers?

Reply #3 –
Quote from: hwy73;327936
That's exactly what you have to do. If the s on the aftermarket h-pipe are made for the tubular headers, as opposed to the standard passenger car manifolds, it should work. All the aftermarket stuff was made to be compatible with the oem headers ball-and-socket type . The standard passenger car mainfolds (on the SO 5.0) have a more flat  that may causes problems when mated to the ball-and-socket deal.


 ^^^^^^^^^^^^^^^
what he said :D
 That is exactly what I did with my car  I found a set of factory mustang headers (for free) and I bought an H-pipe off Craigslist  I did the swap in a weekend in my garage .
Fox-less at the moment

Factory 5.0 Headers?

Reply #4 –
Well that's good to know Daryl.  Until I'm making more power the factory 5.0 headers are all I need.  When I do start making more power, I can always replace the factory 5.0 headers with aftermarket ones.  That will work out great.
William

Factory 5.0 Headers?

Reply #5 –
Quote from: 88 Blackbird 5.0;327937
I've never seen factory 5.0 headers up close. Do you know for a fact that they have ball and socket-style s on them?

 
Yes they do.

Factory 5.0 Headers?

Reply #6 –
Quote from: hwy73;327942
Yes they do.

This should be easy then.  Thanks for the quick responses guys.
William

Oh yea

Reply #7 –
One last question guys and then I'll slink off into the night.  :hick: 

Is the outlet on the factory 5.0 headers 2 1/4", or 2 1/2"?  That's gonna be important to know.  Sorry for being a pain in the :shakeass:
William

Factory 5.0 Headers?

Reply #8 –
Quote from: 88 Blackbird 5.0;327946
One last question guys and then I'll slink off into the night.  :hick: 

Is the outlet on the factory 5.0 headers 2 1/4", or 2 1/2"?  That's gonna be important to know.  Sorry for being a pain in the :shakeass:


I honestly have no clue .
Fox-less at the moment

Factory 5.0 Headers?

Reply #9 –
I just did this last month.  I believe the factory headers are set up for a 2 1/4" pipe.  But there are 2 1/2" aftermarket setups out there.  I used a 2 1/4" Magnaflow catted h-pipe on mine (part # 93337).  Just remember, the O2 sensors relocate from the passenger car manifold to the h-pipe.  There are no O2 bungs on the oem headers.  This may require lengthening the wires or replacing with O2 sensors with the extended leads.

Factory 5.0 Headers?

Reply #10 –
Just for reference, the factory "Y", some factory h-pipes, and off-road aftermarket......( these are not my pictures, they're robbed from someone on here)

Factory 5.0 Headers?

Reply #11 –
Quote from: hwy73;327951
I just did this last month.  I believe the factory headers are set up for a 2 1/4" pipe.  But there are 2 1/2" aftermarket setups out there.  I used a 2 1/4" Magnaflow catted h-pipe on mine (part # 93337).  Just remember, the O2 sensors relocate from the passenger car manifold to the h-pipe.  There are no O2 bungs on the oem headers.  This may require lengthening the wires or replacing with O2 sensors with the extended leads.

That Magnaflow H sure is purdy!  I figured the collectors on factory 5.0 headers were 2 1/4".  I really like Magnaflow products.  I'm looking forward to getting that py, y-pipe bottleneck off my car.  I'll tell you that.

Thanks again to both you and Daryl for helping me out with this.  :D
William