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Canadian Poncho Homepage -> Canadian Poncho -> 65-70 Full Size Power Train Tech Forum -> GM Big Block PCV Hose Still Available New
Post Info TOPIC: GM Big Block PCV Hose Still Available New
4SPEED427


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GM Big Block PCV Hose Still Available New
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Every so often an oddball little part is still available from GM for our old cars. This is one of them.

I ordered it last week because I didn't like a piece of straight bulk PCV hose, it takes too big an area to get from the carb to the PCV valve in the left valve cover. This hose, as you can see, has a nice molded 90 degree end at one end, and you just cut to fit (obviously, because it's likely close to 3' long!)

Part number 3981058 if anyone cares. I'm sure it could be used almost anywhere that the PCV hose takes a large area to get to the valve.

pcv.jpg



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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
seventy2plus2


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I bought one years ago from Classic Industries, and it had the GM part # on it. I've since bought a few from GM.

Now for the big question, which end does the molded 90 elbow go on? I put it on the PCV valve end, a buddy said it should go on the carb end.

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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop

 

 
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2qwik2c


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Carl do you have the holder bracket for the hose that attaches to a intake bolt?

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1967 2dr Biscayne. L36, M40, G80, K05, F41. #'s.
1967 Impala convert. 283, glide. Parked in the garage since 74 and hasn't moved. Soon to be BB 4speed.

 
beaumontguru


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Wouldnt that hose work for say a 1968 307 as well as any 6cyl?

Id sure like one with the 90 bend for my 68 GMC

Got a pic of that bracket you need?  i might have one.



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Beaumontguru

MY BEAUMONT HAS 4 STUDDED TIRES AND 2 BLOCKHEATERS......AND LOTS OF OIL UNDERNEATH.  The other one has a longer roof.
2qwik2c


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The molded 90 goes on the pcv valve from the pics of low mile cars I have.

Thanks Dave Im good for those brackets, I might have a extra if Carl needs one for his swap.

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1967 2dr Biscayne. L36, M40, G80, K05, F41. #'s.
1967 Impala convert. 283, glide. Parked in the garage since 74 and hasn't moved. Soon to be BB 4speed.

 
norontcan


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Is the ID of the hose 1/2"?

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2qwik2c


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1966 c:s 396.jpg

This is a members low mile 66, 38,000 mile car???? Can't remember.



-- Edited by 2qwik2c on Tuesday 19th of February 2019 08:11:30 PM

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1967 2dr Biscayne. L36, M40, G80, K05, F41. #'s.
1967 Impala convert. 283, glide. Parked in the garage since 74 and hasn't moved. Soon to be BB 4speed.

 
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seventy2plus2


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norontcan wrote:

Is the ID of the hose 1/2"?

 It's 3/8" ID.



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beaumontguru


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If its 3/8 and 3ft long,  it would probalby work for my 68 GMC application too. No more stupid looking 90 plastic fitting



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Beaumontguru

MY BEAUMONT HAS 4 STUDDED TIRES AND 2 BLOCKHEATERS......AND LOTS OF OIL UNDERNEATH.  The other one has a longer roof.
seventy2plus2


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Here's one on one of my engines.  1970 LS6 454

454 Engine Left 2.JPG



-- Edited by seventy2plus2 on Tuesday 19th of February 2019 09:58:49 PM

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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop

 

 
4SPEED427


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2qwik2c wrote:

1966 c:s 396.jpg

This is a members low mile 66, 38,000 mile car???? Can't remember.



-- Edited by 2qwik2c on Tuesday 19th of February 2019 08:11:30 PM



I'm glad you posted that. I think I might have one of those brackets somewhere.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
seventy2plus2


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Carl Stevenson wrote:
2qwik2c wrote:

 

1966 c:s 396.jpg

This is a members low mile 66, 38,000 mile car???? Can't remember.



-- Edited by 2qwik2c on Tuesday 19th of February 2019 08:11:30 PM

 



I'm glad you posted that. I think I might have one of those somewhere.

Is that a 66 Quadrajet?



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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop

 

 
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4SPEED427


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Without more angles it's hard to say for sure but it sure looks like mine looking at it straight on.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
4SPEED427


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I was going to put the hose on with the elbow off the front of the carb but now that I see that picture, and as long as I can find my bracket, the elbow at the valve makes a lot more sense and will make it the neatest.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
2qwik2c


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The car is that 66 custom sport survivor in Saskatchewan, the picture was posted on here several years ago. I cant remember whos it is though. Maybe hes not on here anymore?

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1967 2dr Biscayne. L36, M40, G80, K05, F41. #'s.
1967 Impala convert. 283, glide. Parked in the garage since 74 and hasn't moved. Soon to be BB 4speed.

 
4SPEED427


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Look at those hose clamps on the lower heater hose!

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
Canadian Poncho


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Does anyone repro those heater hose clamps?

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seventy2plus2


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Canadian Poncho wrote:

Does anyone repro those heater hose clamps?

 When I buy a repro bypass hose for my 70 big blocks it comes with that style hose clamp.



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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop

 

 
4SPEED427


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Oh cool, I've only seen the tower clamp repros.

Are the ones with that hose any good? I hear the tower repros are awful.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
seventy2plus2


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Carl Stevenson wrote:

Oh cool, I've only seen the tower clamp repros.

Are the ones with that hose any good? I hear the tower repros are awful.

 They don't seem to be the best quality, but haven't leaked.   Nor have any of the reproduction tower clamps I've used.



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70 2+2 hardtop
70 Parisienne hardtop

 

 
Beaumont4008


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It's good to see some parts are available . Will go to the local dealers parts dept and order one thanks. 

 

Ian



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4SPEED427


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Do you want me to get you one Ian?

I can bring it to you when I come for a flywheel.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
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beaumontguru


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I would take a hose,  add me to the list.

Dang, i did not realize those hose clamps would be original equip, i thought only tower or spring.  Probalbly tossed a ton of those over the years.  Will have to grab them when i see them from now on.



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Beaumontguru

MY BEAUMONT HAS 4 STUDDED TIRES AND 2 BLOCKHEATERS......AND LOTS OF OIL UNDERNEATH.  The other one has a longer roof.
Beaumont4008


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Carl Stevenson wrote:

Do you want me to get you one Ian?

I can bring it to you when I come for a flywheel.

 

For sure Carl That sounds good. 

 



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4SPEED427


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I'm assuming it's not a rush Ian?

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
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