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71MoneyPit · 09-25-2002, 01:40 PM

Hey everybody, i was wondering if any of the fellow Caddy swap members or a person that knows a bit about Caddilac engines can tell me what the heck this thing is or does.

it hooks directly into each head. I don't have a clue as to what it is.

thanks in advance

BUXMAN66 · 09-25-2002, 02:00 PM

looks to me like a valve cover/head pressure regulator. evens out the pressure between both heads.i'm sure there is a tech. term for it......you get my drift!

brennecke · 09-25-2002, 03:49 PM

AIR pump tube.
Its part of the emmisions system.

THOR 50 · 09-25-2002, 06:45 PM

Looks like emissions to me! but hard to tell from pic.
I'd agree w/brennecke, air pump tube

Longhorn Man · 09-25-2002, 08:14 PM

Interesting...never seen it before.

lux hauler · 09-25-2002, 08:14 PM

i think that's what it is. my eldo has it. that tube can be removed and the holes in the head plugged, right? What should they be plugged with?

brennecke · 09-26-2002, 09:57 AM

I don't think just plugging it is enough. Inside the head in the exhaust port is a little hole where that tube blows air intho the exhaust to help with reburn. Those have to be plugged too.
As for the outside, I heard that a dime is about the right size and welds in nicely.
Everyone interested in cad engines should relly get ahold of the BIG INCH CAD BOOK
It has all the info you need to do most anything to the cad, and all the info to give to your machinist when the time comes.

Longhorn Man · 09-26-2002, 11:03 PM

Hmmm, your link there took me to the

site.

GrungyCoin · 09-27-2002, 12:54 AM

Is that really a pink engine, please let it be my monitor:p

Drecarious · 09-27-2002, 07:53 AM

Engine looks to be Chevy Orange on my monitor

brennecke · 09-27-2002, 08:44 AM

Look down the side for books. There's only one.
It's really for the big cad though, I don't know how much it would help with a 425. It's mostly about how to make the stroker and get the most bang for your buck out of the big cad.

Longhorn Man · 09-27-2002, 10:56 AM

Ahhh, OK. There goes that short attention span kicking in again.

71MoneyPit · 09-27-2002, 01:35 PM

Thanks for all the help guys,

brennecke- do you think that rubber plug i have on there now would be sufficient? i tried taking the plugs out but they seem to be rusted on or something

Drecarious and GrungyCoin-for some reason it looks pink on my monitor too? but it's really Fire Engine Red

Yesterday was a good day, i finally got to fire the Money Pit up,she hit on the second revolution and fired right up.runs like a champ (neighbors probably weren't too thrilled with the open exhaust

) you can definately tell that there is something lurking under the hood that isn't a SBC or BBC

anyway heres a pic of the front of the motor with the belts and fan put on

71MoneyPit · 09-27-2002, 01:39 PM

heres a closeup of the fan and belts, do you guys think ill need a fan shroud

I'm not sure if there is room.

71MoneyPit · 09-27-2002, 01:41 PM

heres another (what is this? ) pic. It's on the passenger side back of the motor. The heater hose hooks to it? I wonder if i need it

71GMC_3/4T · 09-27-2002, 03:26 PM

That last pic is the vacuum controlled heater flow doo-dad.
When there is vacuum applied, it will allow the water to flow through the heater core.
I'd take it off and plug it. If you want to use it for heater hose, get a heater hose fitting and remove the vacuum thingy. Hopefully it isn't rusted in there for life.

THOR 50 · 09-28-2002, 12:34 AM

part of the cadilac climate control if you're not using the cadillac system you don't need it.

brennecke · 09-28-2002, 04:01 PM

Gotta say I don't know about rubber plugs. If they're already in there, then maybe. Isn't there a pump that connects to the heads somewhere? I'll have to look at my Eldo and see. I don't have that on my 425, and that's what I'm tearing down now.

71MoneyPit · 09-29-2002, 10:48 AM

thanks for all the help,

so that is a vacuum controlled heater flow thing? Couldn't i just remove it then and run that hose straight to my heater core

Is that thing threaded into the block?

brennecke- sorry if i confused you with my reply. i meant there is a rubber plug where the AIR pump hooked to. (you can see it in the first pic, It's the thing thats circled.) I've tried to remove the pipe where it connects to the heads but it won't budge

THOR 50 · 09-29-2002, 04:09 PM

You can run straight to the heater core.
I haven't removed mine but it looks like it's threaded into the block.

09-25-2002, 01:40 PM	#1
71MoneyPit MPG...hmm..more like GPM Join Date: Sep 2002 Location: Medford, Oregon Posts: 339	What is this? Hey everybody, i was wondering if any of the fellow Caddy swap members or a person that knows a bit about Caddilac engines can tell me what the heck this thing is or does. it hooks directly into each head. I don't have a clue as to what it is. thanks in advance Attached Images __________________ (Looking for 67-72 shortwide or shortstep bed) 71 C-10, 500ci of tire shredding Caddy torque, th400, 12 bolt w/Powertrax Lock-Right. Bald Rear Tires 85 Toyota 4x4- 22r 4-banger, 5 speed, I can actually AFFORD to drive this one.

09-25-2002, 02:00 PM	#2
BUXMAN66 go bucks! Join Date: Jan 2002 Location: MIAMISBURG OHIO USA Posts: 803	looks to me like a valve cover/head pressure regulator. evens out the pressure between both heads.i'm sure there is a tech. term for it......you get my drift! __________________ '68 swb 1/2t 350/350th '86 lngbd 3/4 TON parts getter '49 gmc 1/2 t 5 window 350/350th '96 gmc sonoma sle ext-cab. hey it's a 4cyl. 5 spd and good on gas y'know?

09-25-2002, 03:49 PM	#3
brennecke Registered User Join Date: Apr 2000 Location: Missouri Posts: 469	AIR pump tube. Its part of the emmisions system. __________________ Never tire of doing what is right II Thess. 3:13 Northeast Missouri 71 LWB original 350 3/speed Soon to be 500

09-25-2002, 06:45 PM	#4
THOR 50 Over worked under paid Join Date: May 2001 Location: Fort Myers, Florida Posts: 378	hard to tell Looks like emissions to me! but hard to tell from pic. I'd agree w/brennecke, air pump tube __________________ Roger '69 C-10 with GMC front clip billet grill, 283CI, 400TH and 12bolt posiw/3.73 gears

09-25-2002, 08:14 PM	#6
lux hauler Psycho-billy Member Join Date: Jul 2001 Location: about 40 miles west of Cleveland, Ohio Posts: 2,591	i think that's what it is. my eldo has it. that tube can be removed and the holes in the head plugged, right? What should they be plugged with? __________________ '72 C-10 350 w/Lunati Voodoo cam (207/213, .437/.454), Performer intake, 625 Road Demon Jr. and Hooker headers. Support your community, support yourself. Buy local, buy American (or Canadian).

09-25-2002, 08:14 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Interesting...never seen it before.

09-26-2002, 09:57 AM	#7
brennecke Registered User Join Date: Apr 2000 Location: Missouri Posts: 469	I don't think just plugging it is enough. Inside the head in the exhaust port is a little hole where that tube blows air intho the exhaust to help with reburn. Those have to be plugged too. As for the outside, I heard that a dime is about the right size and welds in nicely. Everyone interested in cad engines should relly get ahold of the BIG INCH CAD BOOK It has all the info you need to do most anything to the cad, and all the info to give to your machinist when the time comes. __________________ Never tire of doing what is right II Thess. 3:13 Northeast Missouri 71 LWB original 350 3/speed Soon to be 500

09-26-2002, 11:03 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Hmmm, your link there took me to the site.

09-27-2002, 12:54 AM	#9
GrungyCoin Registered User Join Date: Sep 2002 Location: Buckley, WA Posts: 22	Is that really a pink engine, please let it be my monitor:p

09-27-2002, 07:53 AM	#10
Drecarious Registered User Join Date: Jul 2002 Location: Arkansas City, Ks Posts: 32	Engine looks to be Chevy Orange on my monitor __________________ '67 LWB Fleetside w/ 283 & powerglide Edelbrock intake and 1406 carb K&N filter, Flowmater 40's

09-27-2002, 08:44 AM	#11
brennecke Registered User Join Date: Apr 2000 Location: Missouri Posts: 469	Andy Look down the side for books. There's only one. It's really for the big cad though, I don't know how much it would help with a 425. It's mostly about how to make the stroker and get the most bang for your buck out of the big cad. __________________ Never tire of doing what is right II Thess. 3:13 Northeast Missouri 71 LWB original 350 3/speed Soon to be 500

09-27-2002, 10:56 AM	#12
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Ahhh, OK. There goes that short attention span kicking in again.

09-27-2002, 01:35 PM	#13
71MoneyPit MPG...hmm..more like GPM Join Date: Sep 2002 Location: Medford, Oregon Posts: 339	Thanks for all the help guys, brennecke- do you think that rubber plug i have on there now would be sufficient? i tried taking the plugs out but they seem to be rusted on or something Drecarious and GrungyCoin-for some reason it looks pink on my monitor too? but it's really Fire Engine Red Yesterday was a good day, i finally got to fire the Money Pit up,she hit on the second revolution and fired right up.runs like a champ (neighbors probably weren't too thrilled with the open exhaust) you can definately tell that there is something lurking under the hood that isn't a SBC or BBC anyway heres a pic of the front of the motor with the belts and fan put on Attached Images __________________ (Looking for 67-72 shortwide or shortstep bed) 71 C-10, 500ci of tire shredding Caddy torque, th400, 12 bolt w/Powertrax Lock-Right. Bald Rear Tires 85 Toyota 4x4- 22r 4-banger, 5 speed, I can actually AFFORD to drive this one.

09-27-2002, 01:39 PM	#14
71MoneyPit MPG...hmm..more like GPM Join Date: Sep 2002 Location: Medford, Oregon Posts: 339	heres a closeup of the fan and belts, do you guys think ill need a fan shroud I'm not sure if there is room. Attached Images __________________ (Looking for 67-72 shortwide or shortstep bed) 71 C-10, 500ci of tire shredding Caddy torque, th400, 12 bolt w/Powertrax Lock-Right. Bald Rear Tires 85 Toyota 4x4- 22r 4-banger, 5 speed, I can actually AFFORD to drive this one.

09-27-2002, 01:41 PM	#15
71MoneyPit MPG...hmm..more like GPM Join Date: Sep 2002 Location: Medford, Oregon Posts: 339	heres another (what is this? ) pic. It's on the passenger side back of the motor. The heater hose hooks to it? I wonder if i need it Attached Images __________________ (Looking for 67-72 shortwide or shortstep bed) 71 C-10, 500ci of tire shredding Caddy torque, th400, 12 bolt w/Powertrax Lock-Right. Bald Rear Tires 85 Toyota 4x4- 22r 4-banger, 5 speed, I can actually AFFORD to drive this one.



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09-27-2002, 03:26 PM	#16
71GMC_3/4T Weapons Of Construction Join Date: Apr 2000 Location: Colorado, USA Posts: 1,095	That last pic is the vacuum controlled heater flow doo-dad. When there is vacuum applied, it will allow the water to flow through the heater core. I'd take it off and plug it. If you want to use it for heater hose, get a heater hose fitting and remove the vacuum thingy. Hopefully it isn't rusted in there for life. __________________ 1971 GMC 2500, 402/TH400 4.10 Daily Driver Lafayette, CO

09-28-2002, 12:34 AM	#17
THOR 50 Over worked under paid Join Date: May 2001 Location: Fort Myers, Florida Posts: 378	exactly part of the cadilac climate control if you're not using the cadillac system you don't need it. __________________ Roger '69 C-10 with GMC front clip billet grill, 283CI, 400TH and 12bolt posiw/3.73 gears

09-28-2002, 04:01 PM	#18
brennecke Registered User Join Date: Apr 2000 Location: Missouri Posts: 469	Gotta say I don't know about rubber plugs. If they're already in there, then maybe. Isn't there a pump that connects to the heads somewhere? I'll have to look at my Eldo and see. I don't have that on my 425, and that's what I'm tearing down now. __________________ Never tire of doing what is right II Thess. 3:13 Northeast Missouri 71 LWB original 350 3/speed Soon to be 500

09-29-2002, 10:48 AM	#19
71MoneyPit MPG...hmm..more like GPM Join Date: Sep 2002 Location: Medford, Oregon Posts: 339	thanks for all the help, so that is a vacuum controlled heater flow thing? Couldn't i just remove it then and run that hose straight to my heater core Is that thing threaded into the block? brennecke- sorry if i confused you with my reply. i meant there is a rubber plug where the AIR pump hooked to. (you can see it in the first pic, It's the thing thats circled.) I've tried to remove the pipe where it connects to the heads but it won't budge __________________ (Looking for 67-72 shortwide or shortstep bed) 71 C-10, 500ci of tire shredding Caddy torque, th400, 12 bolt w/Powertrax Lock-Right. Bald Rear Tires 85 Toyota 4x4- 22r 4-banger, 5 speed, I can actually AFFORD to drive this one.

09-29-2002, 04:09 PM	#20
THOR 50 Over worked under paid Join Date: May 2001 Location: Fort Myers, Florida Posts: 378	straight to the core You can run straight to the heater core. I haven't removed mine but it looks like it's threaded into the block. __________________ Roger '69 C-10 with GMC front clip billet grill, 283CI, 400TH and 12bolt posiw/3.73 gears

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