Home » Public Forums » GMCnet » Cad 500 Right Side Exhaust Manifold or Header?
| Cad 500 Right Side Exhaust Manifold or Header? [message #138332] |
Wed, 10 August 2011 20:50  |
djeffers
Messages: 219
Registered: June 2004
Karma: 2
|
Senior Member |
|
|
Hello all,
500 Cad Exhaust Manifold, Right Side:
Our right side, rear outlet exhaust manifold on our Cad 500 powered GMC Eleganza has cracked and almost broken completely into two pieces.
I am working on a hi-tech tin can/radiator hose clamp fix in an attempt to mitigate the effects of the broken manifold.
A quick search of the forum indicates the right side (passenger side) manifold is common to both rear wheel drive cars and the Eldorados.
Would someone in the know please verify this fact for us? It's only been seven short years and I can't remember for sure which one's which.
We have about 1500 miles to go to get to mom's parts pile to check spares ourselves to make the manifold determination and see if we have a replacement.
If the right side is Eldo only, I'd better start looking now as we head to where we can do the repairs. Any leads or suggestions?
500 Cad Headers, by Cad Co?
Has anyone tried headers for the Cad 500 / GMC?
If so, please tell us how they worked out; fit, performance, cost, who made them, etc?
Thanks so much,
Don & Susan Jeffers
78 Eleganza II
|
|
|
|
| Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or Header? [message #138353 is a reply to message #138332] |
Wed, 10 August 2011 21:57  |
 |
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
|
Senior Member |
|
|
Don,
The right (passenger) side is common to all Caddy 500's.
The left (drivers) side is unique to FWD Eldos to clear the trans.
IIRC Larry Weidner mentioned that someone built headers for the Caddy 500.
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: Don Jeffers
Hello all,
500 Cad Exhaust Manifold, Right Side:
Our right side, rear outlet exhaust manifold on our Cad 500 powered GMC
Eleganza has cracked and almost broken completely into two pieces.
I am working on a hi-tech tin can/radiator hose clamp fix in an attempt to
mitigate the effects of the broken manifold.
A quick search of the forum indicates the right side (passenger side)
manifold is common to both rear wheel drive cars and the Eldorados.
Would someone in the know please verify this fact for us? It's only been
seven short years and I can't remember for sure which one's which.
We have about 1500 miles to go to get to mom's parts pile to check spares
ourselves to make the manifold determination and see if we have a
replacement.
If the right side is Eldo only, I'd better start looking now as we head to
where we can do the repairs. Any leads or suggestions?
500 Cad Headers, by Cad Co?
Has anyone tried headers for the Cad 500 / GMC?
If so, please tell us how they worked out; fit, performance, cost, who made
them, etc?
Thanks so much,
Don & Susan Jeffers
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
|
|
|
|
| Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or Header? [message #138364 is a reply to message #138353] |
Wed, 10 August 2011 22:21 |
Kosier
Messages: 834
Registered: February 2008
Karma: 1
|
Senior Member |
|
|
Rob,
There are actually two different RH manifolds for the 500. With
or
without the EFE valve. Also, the original EFI cars had a spacer
in
place of the EFE valve. If you get one with the EFE valve, it
will
probably be frozen solid. I usually torch off the shaft and use
it as
a spacer. The manifolds are apparently easy to break.
Gary Kosier
----- Original Message -----
From: "Rob Mueller" <robmueller@iinet.net.au>
To: <gmclist@temp.gmcnet.org>
Sent: Wednesday, August 10, 2011 10:57 PM
Subject: Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or
Header?
> Don,
>
> The right (passenger) side is common to all Caddy 500's.
>
> The left (drivers) side is unique to FWD Eldos to clear the
> trans.
>
> IIRC Larry Weidner mentioned that someone built headers for the
> Caddy 500.
>
> Regards,
> Rob M.
> Sydney, Australia
> AUS '75 Avion-The Blue Streak TZE365V100428
> USA '75 Avion-Double Trouble TZE365V100426
>
>
> -----Original Message-----
> From: Don Jeffers
>
> Hello all,
>
> 500 Cad Exhaust Manifold, Right Side:
>
> Our right side, rear outlet exhaust manifold on our Cad 500
> powered GMC
> Eleganza has cracked and almost broken completely into two
> pieces.
>
> I am working on a hi-tech tin can/radiator hose clamp fix in an
> attempt to
> mitigate the effects of the broken manifold.
>
> A quick search of the forum indicates the right side (passenger
> side)
> manifold is common to both rear wheel drive cars and the
> Eldorados.
>
> Would someone in the know please verify this fact for us? It's
> only been
> seven short years and I can't remember for sure which one's
> which.
>
> We have about 1500 miles to go to get to mom's parts pile to
> check spares
> ourselves to make the manifold determination and see if we have
> a
> replacement.
>
> If the right side is Eldo only, I'd better start looking now as
> we head to
> where we can do the repairs. Any leads or suggestions?
>
> 500 Cad Headers, by Cad Co?
>
> Has anyone tried headers for the Cad 500 / GMC?
>
> If so, please tell us how they worked out; fit, performance,
> cost, who made
> them, etc?
>
> Thanks so much,
> Don & Susan Jeffers
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or Header? [message #138374 is a reply to message #138364] |
Wed, 10 August 2011 23:22 |
|
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
|
Senior Member |
|
|
Gary,
I hoped you'd pipe up!
Is the position of the outlet to the exhaust pipes the same on both
manifolds?
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Kosier
Sent: Thursday, 11 August 2011 1:21 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or Header?
Rob,
There are actually two different RH manifolds for the 500. With
or
without the EFE valve. Also, the original EFI cars had a spacer
in
place of the EFE valve. If you get one with the EFE valve, it
will
probably be frozen solid. I usually torch off the shaft and use
it as
a spacer. The manifolds are apparently easy to break.
Gary Kosier
----- Original Message -----
From: "Rob Mueller" <robmueller@iinet.net.au>
To: <gmclist@temp.gmcnet.org>
Sent: Wednesday, August 10, 2011 10:57 PM
Subject: Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or
Header?
> Don,
>
> The right (passenger) side is common to all Caddy 500's.
>
> The left (drivers) side is unique to FWD Eldos to clear the
> trans.
>
> IIRC Larry Weidner mentioned that someone built headers for the
> Caddy 500.
>
> Regards,
> Rob M.
> Sydney, Australia
> AUS '75 Avion-The Blue Streak TZE365V100428
> USA '75 Avion-Double Trouble TZE365V100426
>
>
> -----Original Message-----
> From: Don Jeffers
>
> Hello all,
>
> 500 Cad Exhaust Manifold, Right Side:
>
> Our right side, rear outlet exhaust manifold on our Cad 500
> powered GMC
> Eleganza has cracked and almost broken completely into two
> pieces.
>
> I am working on a hi-tech tin can/radiator hose clamp fix in an
> attempt to
> mitigate the effects of the broken manifold.
>
> A quick search of the forum indicates the right side (passenger
> side)
> manifold is common to both rear wheel drive cars and the
> Eldorados.
>
> Would someone in the know please verify this fact for us? It's
> only been
> seven short years and I can't remember for sure which one's
> which.
>
> We have about 1500 miles to go to get to mom's parts pile to
> check spares
> ourselves to make the manifold determination and see if we have
> a
> replacement.
>
> If the right side is Eldo only, I'd better start looking now as
> we head to
> where we can do the repairs. Any leads or suggestions?
>
> 500 Cad Headers, by Cad Co?
>
> Has anyone tried headers for the Cad 500 / GMC?
>
> If so, please tell us how they worked out; fit, performance,
> cost, who made
> them, etc?
>
> Thanks so much,
> Don & Susan Jeffers
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
|
|
|
|
| Re: Cad 500 Right Side Exhaust Manifold or Header? [message #138428 is a reply to message #138332] |
Thu, 11 August 2011 10:10 |
g.winger
Messages: 792
Registered: February 2008
Location: Warrenton,Missouri
Karma: 0
|
Senior Member |
|
|
|
You state you have 1500 miles to go,,,does that mean you are broke down and its 1500 miles to your spare. Or you are not broke down and your spares are 1500 miles away. If you're broke down I would like to help. I have a spare rt. ex. man. BUT,,,,death in fanily,,,am in KC. Can't ship spare to you untill late monday. And spare would need to be replaced,,,,,,hope I can help,,,,PL
|
|
|
|
| Re: Cad 500 Right Side Exhaust Manifold or Header? [message #138453 is a reply to message #138428] |
Thu, 11 August 2011 11:32 |
djeffers
Messages: 219
Registered: June 2004
Karma: 2
|
Senior Member |
|
|
| g.winger wrote on Thu, 11 August 2011 11:10 |
You state you have 1500 miles to go,,,does that mean you are broke down and its 1500 miles to your spare. Or you are not broke down and your spares are 1500 miles away. If you're broke down I would like to help. I have a spare rt. ex. man. BUT,,,,death in fanily,,,am in KC. Can't ship spare to you untill late monday. And spare would need to be replaced,,,,,,hope I can help,,,,PL
|
We are not broke down. Thanks so very much for the offer to help.
Just a cracked manifold and 1500 miles to go to our spares. The manifold is solidly bolted on. Hopefully I will get the tin can fix around the crack today to prevent any direct blasts of heat on anything.
Thanks to all who responded. I am resting easily now that I know we don't need a manifold made of unobtainium.
We have a great community of GMCers.
Best regards to all,
Don & Susan Jeffers
78 Eleganza II
In Florida today.
|
|
|
|
| Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or Header? [message #138533 is a reply to message #138453] |
Thu, 11 August 2011 18:16 |
|
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
|
Senior Member |
|
|
Don,
Before I shipped my Caddy 500 to Australia I did a daily search for Cadillac
500 on eBay and found a spare drivers and a passenger sides (without thermal
thighy Gary mentioned). As you noted the passenger sides are plentiful but
the drivers side are rare. When they do show up the starting prices are
silly. However, patience paid off and I got one for less than $100.
I just checked The Cad Co Catalog and note that the following:
http://www.cad500parts.com/catalog/page30.htm
GMC Motorhomes (FWD) (mandrel bent) $795
GMC Motorhomes (FWD) (non-mandrel bent) $595
These fit in most Cadillac engine swaps into the 70s Olds-powered GMC FWD
Motor Homes. Designed for use with our bolt-in motor mount kit, but for
other swaps as well. These headers are hand built, and Mig welded, not mass
produced. If your transmission dipstick tube support bracket uses an exhaust
manifold bolt, you will have to modify the bracket to fit.
I vaguely remember WAAAY back we had a discussion about these headers
vis-à-vis clearance for the trans governor, unfortunately I can't remember
the outcome. I think Larry Weidner has a set of these on his Caddy but I'm
not sure.
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Don Jeffers
Sent: Friday, 12 August 2011 2:32 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or Header?
g.winger wrote on Thu, 11 August 2011 11:10
> You state you have 1500 miles to go,,,does that mean you are broke down
and its 1500 miles to your spare. Or you are not broke down and your spares
are 1500 miles away. If you're broke down I would like to help. I have a
spare rt. ex. man. BUT,,,,death in fanily,,,am in KC. Can't ship spare to
you untill late monday. And spare would need to be replaced,,,,,,hope I can
help,,,,PL
We are not broke down. Thanks so very much for the offer to help.
Just a cracked manifold and 1500 miles to go to our spares. The manifold is
solidly bolted on. Hopefully I will get the tin can fix around the crack
today to prevent any direct blasts of heat on anything.
Thanks to all who responded. I am resting easily now that I know we don't
need a manifold made of unobtainium.
We have a great community of GMCers.
Best regards to all,
Don & Susan Jeffers
78 Eleganza II
In Florida today.
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
|
|
|
|
| Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or Header? [message #138572 is a reply to message #138374] |
Thu, 11 August 2011 19:52 |
Kosier
Messages: 834
Registered: February 2008
Karma: 1
|
Senior Member |
|
|
Rob,
I dunno! I've heard both ways. I think I've got a couple of
junkers
out in the scrap pile. I'll try to find them in the daylight and
see.
Gary Kosier with 7 Cadillac 500s and two good manifolds.
----- Original Message -----
From: "Rob Mueller" <robmueller@iinet.net.au>
To: <gmclist@temp.gmcnet.org>
Sent: Thursday, August 11, 2011 12:22 AM
Subject: Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or
Header?
> Gary,
>
> I hoped you'd pipe up!
>
> Is the position of the outlet to the exhaust pipes the same on
> both
> manifolds?
>
> Regards,
> Rob M.
> Sydney, Australia
> AUS '75 Avion-The Blue Streak TZE365V100428
> USA '75 Avion-Double Trouble TZE365V100426
>
>
> -----Original Message-----
> From: gmclist-bounces@temp.gmcnet.org
> [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Kosier
> Sent: Thursday, 11 August 2011 1:21 PM
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or
> Header?
>
> Rob,
>
> There are actually two different RH manifolds for the 500.
> With
> or
> without the EFE valve. Also, the original EFI cars had a
> spacer
> in
> place of the EFE valve. If you get one with the EFE valve, it
> will
> probably be frozen solid. I usually torch off the shaft and
> use
> it as
> a spacer. The manifolds are apparently easy to break.
>
> Gary Kosier
>
> ----- Original Message -----
> From: "Rob Mueller" <robmueller@iinet.net.au>
> To: <gmclist@temp.gmcnet.org>
> Sent: Wednesday, August 10, 2011 10:57 PM
> Subject: Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or
> Header?
>
>
>> Don,
>>
>> The right (passenger) side is common to all Caddy 500's.
>>
>> The left (drivers) side is unique to FWD Eldos to clear the
>> trans.
>>
>> IIRC Larry Weidner mentioned that someone built headers for
>> the
>> Caddy 500.
>>
>> Regards,
>> Rob M.
>> Sydney, Australia
>> AUS '75 Avion-The Blue Streak TZE365V100428
>> USA '75 Avion-Double Trouble TZE365V100426
>>
>>
>> -----Original Message-----
>> From: Don Jeffers
>>
>> Hello all,
>>
>> 500 Cad Exhaust Manifold, Right Side:
>>
>> Our right side, rear outlet exhaust manifold on our Cad 500
>> powered GMC
>> Eleganza has cracked and almost broken completely into two
>> pieces.
>>
>> I am working on a hi-tech tin can/radiator hose clamp fix in
>> an
>> attempt to
>> mitigate the effects of the broken manifold.
>>
>> A quick search of the forum indicates the right side
>> (passenger
>> side)
>> manifold is common to both rear wheel drive cars and the
>> Eldorados.
>>
>> Would someone in the know please verify this fact for us?
>> It's
>> only been
>> seven short years and I can't remember for sure which one's
>> which.
>>
>> We have about 1500 miles to go to get to mom's parts pile to
>> check spares
>> ourselves to make the manifold determination and see if we
>> have
>> a
>> replacement.
>>
>> If the right side is Eldo only, I'd better start looking now
>> as
>> we head to
>> where we can do the repairs. Any leads or suggestions?
>>
>> 500 Cad Headers, by Cad Co?
>>
>> Has anyone tried headers for the Cad 500 / GMC?
>>
>> If so, please tell us how they worked out; fit, performance,
>> cost, who made
>> them, etc?
>>
>> Thanks so much,
>> Don & Susan Jeffers
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or Header? [message #138584 is a reply to message #138533] |
Thu, 11 August 2011 20:44 |
Kosier
Messages: 834
Registered: February 2008
Karma: 1
|
Senior Member |
|
|
Rob,
Use the Olds tranny dipstick tube. They're a PITA, but a better
fit.
Gary Kosier
77EII & 77PB
Newark, Ohio
----- Original Message -----
From: "Rob Mueller" <robmueller@iinet.net.au>
To: <gmclist@temp.gmcnet.org>
Sent: Thursday, August 11, 2011 7:16 PM
Subject: Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or
Header?
Don,
Before I shipped my Caddy 500 to Australia I did a daily search
for Cadillac
500 on eBay and found a spare drivers and a passenger sides
(without thermal
thighy Gary mentioned). As you noted the passenger sides are
plentiful but
the drivers side are rare. When they do show up the starting
prices are
silly. However, patience paid off and I got one for less than
$100.
I just checked The Cad Co Catalog and note that the following:
http://www.cad500parts.com/catalog/page30.htm
GMC Motorhomes (FWD) (mandrel bent) $795
GMC Motorhomes (FWD) (non-mandrel bent) $595
These fit in most Cadillac engine swaps into the 70s Olds-powered
GMC FWD
Motor Homes. Designed for use with our bolt-in motor mount kit,
but for
other swaps as well. These headers are hand built, and Mig
welded, not mass
produced. If your transmission dipstick tube support bracket uses
an exhaust
manifold bolt, you will have to modify the bracket to fit.
I vaguely remember WAAAY back we had a discussion about these
headers
vis-à-vis clearance for the trans governor, unfortunately I can't
remember
the outcome. I think Larry Weidner has a set of these on his
Caddy but I'm
not sure.
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Don Jeffers
Sent: Friday, 12 August 2011 2:32 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Cad 500 Right Side Exhaust Manifold or
Header?
g.winger wrote on Thu, 11 August 2011 11:10
> You state you have 1500 miles to go,,,does that mean you are
> broke down
and its 1500 miles to your spare. Or you are not broke down and
your spares
are 1500 miles away. If you're broke down I would like to help. I
have a
spare rt. ex. man. BUT,,,,death in fanily,,,am in KC. Can't ship
spare to
you untill late monday. And spare would need to be
replaced,,,,,,hope I can
help,,,,PL
We are not broke down. Thanks so very much for the offer to help.
Just a cracked manifold and 1500 miles to go to our spares. The
manifold is
solidly bolted on. Hopefully I will get the tin can fix around
the crack
today to prevent any direct blasts of heat on anything.
Thanks to all who responded. I am resting easily now that I know
we don't
need a manifold made of unobtainium.
We have a great community of GMCers.
Best regards to all,
Don & Susan Jeffers
78 Eleganza II
In Florida today.
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
Goto Forum:
Current Time: Mon Sep 30 02:24:07 CDT 2024
Total time taken to generate the page: 0.04481 seconds
|
GMCforum
Search
Help
Register
Login
Home
