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Home » Public Forums » GMCnet » [GMCnet] Is a 73 455 Exhaust Y-pipe available off the shelf?
[GMCnet] Is a 73 455 Exhaust Y-pipe available off the shelf? [message #81286] Wed, 21 April 2010 08:22 Go to next message
Eddie Pettit is currently offline  Eddie Pettit   United States
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Registered: May 2009
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Hey guys,

I don't post a lot here, but I've been playing along at home...

Anyway, I managed to back up and catch a large piece of wood that has bent
my 73 455's y-pipe. Now I have a huge exhaust leak at the donut gasket to
the left manifold. Is the y-pipe a stock part that I can just go purchase?
Or does it have to be made at this point?

I know that a lot of you are going to say, that it's a good time to convert
to headers. I'd agree, but my wallet doesn't. There is a leak/crack from the
left manifold, which is even more reason to do so. However, I'm guessing
headers are going to be at least 5 times more expensive than just replacing
the y-pipe.

Thank you,

Eddie Pettit



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Re: [GMCnet] Is a 73 455 Exhaust Y-pipe available off the shelf? [message #81288 is a reply to message #81286] Wed, 21 April 2010 08:28 Go to previous messageGo to next message
Steven Ferguson is currently offline  Steven Ferguson   United States
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Registered: May 2006
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Senior Member
Eddie,
Welcome aboard.
Jim Kanomata 1-800-752-7502 can probably help you here. He has
nearly every configuration of exhaust pipe there is for GMCs. You may
well find that one, or both of your original mufflers are plugged with
pieces of themselves as they desintegrated over time. This could be
part of the reason you have a cracked exhaust manifold (heat) and you
will probably find that your intake is beginning to crack also (in the
floor under the carb).

On Wed, Apr 21, 2010 at 6:22 AM, Eddie Pettit <eddie@thepettits.com> wrote:
> Hey guys,
>
> I don't post a lot here, but I've been playing along at home...
>
> Anyway, I managed to back up and catch a large piece of wood that has bent
> my 73 455's y-pipe. Now I have a huge exhaust leak at the donut gasket to
> the left manifold. Is the y-pipe a stock part that I can just go purchase?
> Or does it have to be made at this point?
>
> I know that a lot of you are going to say, that it's a good time to convert
> to headers. I'd agree, but my wallet doesn't. There is a leak/crack from the
> left manifold, which is even more reason to do so. However, I'm guessing
> headers are going to be at least 5 times more expensive than just replacing
> the y-pipe.
>
> Thank you,
>
> Eddie Pettit
>
>
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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Re: [GMCnet] Is a 73 455 Exhaust Y-pipe available off the shelf? [message #81296 is a reply to message #81288] Wed, 21 April 2010 08:58 Go to previous messageGo to next message
Mr ERFisher is currently offline  Mr ERFisher   United States
Messages: 7117
Registered: August 2005
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Senior Member
>
> Jim Kanomata 1-800-752-7502 can probably help you here. He has
> nearly every configuration of exhaust pipe there is for GMCs. You may
>
--

he also runs with no muffler at all


could be an option

gene

Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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Re: [GMCnet] Is a 73 455 Exhaust Y-pipe available off the shelf? [message #81303 is a reply to message #81296] Wed, 21 April 2010 09:27 Go to previous messageGo to next message
mike miller   United States
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
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Senior Member
Mr ERFisher wrote on Wed, 21 April 2010 06:58

>
> Jim Kanomata 1-800-752-7502 can probably help you here. He has
> nearly every configuration of exhaust pipe there is for GMCs. You may
>
he also runs with no muffler at all

could be an option


I understand Jim also has turbos. Turbos cut the sound level (with restriction) and combined with a long pipe out the rear, MIGHT be quiet enough so "the man" doesn't notice.

Eddie,

Even with headers you would need some kind of Y pipe. Unless you try and do some kind of dual system... not recommended.


Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo' http://m000035.blogspot.com
Re: [GMCnet] Is a 73 455 Exhaust Y-pipe available off the shelf? [message #81342 is a reply to message #81286] Wed, 21 April 2010 13:32 Go to previous messageGo to next message
jknezek is currently offline  jknezek   United States
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Registered: December 2007
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Senior Member
I just went through this over the last week. I was completely unable to find an off-the-shelf y pipe to put on my new headers. Had a muffler shop that came highly recommended make one up. I also called Jeff at Alex Sirum and he said he could ship a Y pipe out to me same day if necessary and, as many have said, I know Jim K can help you out as well. In the end, it seemed easier to get it done locally just in case I needed to make some modifications to get it all to fit right.

Thanks,
Jeremy Knezek
1976 Glenbrook
Birmingham, AL
Re: [GMCnet] Is a 73 455 Exhaust Y-pipe available off the shelf? [message #81379 is a reply to message #81342] Wed, 21 April 2010 20:39 Go to previous messageGo to next message
GMCWiperMan is currently offline  GMCWiperMan   United States
Messages: 1248
Registered: December 2007
Karma: 1
Senior Member
For some reason, neither Summit nor Jegs is displaying photos of them but
Y-connectors in various diameters are readily available from either of them;
I bought one just before I started the Cad 500 installation

Ken H.
Americus, GA
'76 X-Birchaven
www.gmcwipersetc.com


On Wed, Apr 21, 2010 at 2:32 PM, Jeremy <jtknezek@hotmail.com> wrote:

>
>
> I just went through this over the last week. I was completely unable to
> find an off-the-shelf y pipe to put on my new headers. Had a muffler shop
> that came highly recommended make one up. I also called Jeff at Alex Sirum
> and he said he could ship a Y pipe out to me same day if necessary and, as
> many have said, I know Jim K can help you out as well. In the end, it seemed
> easier to get it done locally just in case I needed to make some
> modifications to get it all to fit right.
>
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Re: [GMCnet] Is a 73 455 Exhaust Y-pipe available off the shelf? [message #81389 is a reply to message #81303] Wed, 21 April 2010 21:10 Go to previous messageGo to next message
jimk is currently offline  jimk   United States
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
Senior Member
We do help lot of people on low budget solve problems.
We have aluminized pipe system as well as the SS systems.
All mandrel bent, no kinks like the muffler shop units.






On Wed, Apr 21, 2010 at 7:27 AM, Mike Miller <m000035@gmail.com> wrote:
>
>
> Mr ERFisher wrote on Wed, 21 April 2010 06&#58;58
>> >
>> >   Jim Kanomata 1-800-752-7502 can probably help you here.   He has
>> > nearly every configuration of exhaust pipe there is for GMCs.  You may
>> >
>> he also runs with no muffler at all
>>
>> could be an option
>
>
> I understand Jim also has turbos.  Turbos cut the sound level (with restriction) and combined with a long pipe out the rear, MIGHT be quiet enough so "the man" doesn't notice.
>
> Eddie,
>
> Even with headers you would need some kind of Y pipe.  Unless you try and do some kind of dual system... not recommended.
> --
> Mike Miller
> `73 26' X Painted D.
> `78 23' Birchaven
> Hillsboro, OR
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
Re: [GMCnet] Is a 73 455 Exhaust Y-pipe available off the shelf? [message #81753 is a reply to message #81389] Sat, 24 April 2010 09:59 Go to previous messageGo to next message
Eddie Pettit is currently offline  Eddie Pettit   United States
Messages: 71
Registered: May 2009
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Member
Thanks for the responses guys, I was kind of looking for the stock OEM one
piece y-pipe. As many of you have stated, it could certainly be done
piecemeal, which I hadn't considered. I merely considered unbolting what was
there and bolting up a new one.

Eddie Pettit

> -----Original Message-----

> From: gmclist-bounces@temp.gmcnet.org

> [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Jim Kanomata

> Sent: Wednesday, April 21, 2010 10:10 PM

> To: gmclist@temp.gmcnet.org

> Subject: Re: [GMCnet] Is a 73 455 Exhaust Y-pipe available

> off the shelf?

>

>

> We do help lot of people on low budget solve problems.

> We have aluminized pipe system as well as the SS systems.

> All mandrel bent, no kinks like the muffler shop units.

>

>

>

>

>

>

> On Wed, Apr 21, 2010 at 7:27 AM, Mike Miller

> <m000035@gmail.com> wrote:

> >

> >

> > Mr ERFisher wrote on Wed, 21 April 2010 06&#58;58

> >> >

> >> > Jim Kanomata 1-800-752-7502 can probably help you

> here. He has

> >> > nearly every configuration of exhaust pipe there is for

> GMCs. You may

> >> >

> >> he also runs with no muffler at all

> >>

> >> could be an option

> >

> >

> > I understand Jim also has turbos. Turbos cut the sound

> level (with restriction) and combined with a long pipe out

> the rear, MIGHT be quiet enough so "the man" doesn't notice.

> >

> > Eddie,

> >

> > Even with headers you would need some kind of Y pipe.

> Unless you try and do some kind of dual system... not recommended.

> > --

> > Mike Miller

> > &grave;73 26' X Painted D.

> > &grave;78 23' Birchaven

> > Hillsboro, OR

> > _______________________________________________

> > GMCnet mailing list

> > List Information and Subscription Options:

> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

> >

>

>

>

> --

> Jim Kanomata

> Applied/GMC, Fremont,CA

> jimk@appliedairfilters.com

> http://www.appliedgmc.com

> 1-800-752-7502

> _______________________________________________

> GMCnet mailing list

> List Information and Subscription Options:

> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

>



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Re: [GMCnet] Is a 73 455 Exhaust Y-pipe available off the shelf? [message #81760 is a reply to message #81753] Sat, 24 April 2010 13:12 Go to previous message
tphipps is currently offline  tphipps   United States
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
Senior Member
Leigh Harrison also has a stock replacement exhaust system. It does have 3" pipe out the back. It replaces the OEM system, and is an easy install with a little help from your friends.
designed to use the original iron exhaust manifolds. Aluminized Steel pipe. Check his web site.
the fact that he is located about 10 miles from the house helped with the decision making process.

Tom Phipps,
Much quieter now.


2012 Phoenix Cruiser model 2552 KA4CSG
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