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Username Post: 283 rear breather tube        (Topic#82411)
angs1957 
Member
Posts: 172

Loc: Australia
Reg: 03-26-04
11-29-04 12:54 AM - Post#563171    

I have missed place the metal breather tube that sits behind the distributor,does any one know what i can replace it with or what fits in that hole.

 
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57_sedan_delivery 
Old as Dirt Member
Posts: 6720

Loc: Hog Valley, Fla.
Reg: 02-19-01
Re: 283 rear breather tube
11-29-04 02:03 AM - Post#563172    
    In response to angs1957

The road draft tube was used on 283 and some 327 engines, maybe a wrecking yard? Another option if you are running a modified engine is a rubber grommet in the hole with an elbow pipe going to the PCV valve, or a PCV valve in the grommet itself with a hose off it. I have seen short factory fittings that went into the block hole and were also held down with the screw as in the road draft tube but had a fitting on them for a rubber hose to go to the air cleaner.
Mike W.

Founding father Desert Classic Chevys in Phoenix, Az.

1957 sedan delivery 454 TH400
1956 windowed sedan delivery US Dept of Ag car
1956 Chevy 3100 US Navy pickup
1959 rare GMC 100 fleet option 100 pickup


 
vabeach56wagon 
Valued Contributor
Posts: 3066
vabeach56wagon
Loc: Chesapeake,VA,
Reg: 04-22-02
Re: 283 rear breather tube
11-29-04 02:56 AM - Post#563173    
    In response to angs1957

East Coast Chevy, among others, sells a reproduction road draft tube.

www.eastcoastchevy.com

Paul
"Gobstomper": '56 210 9 passenger wagon.


Gobstomper Photo Site

Mechanical Music


 
jim_h_erie 
Contributor
Posts: 220
jim_h_erie
Loc: erie pa.
Reg: 10-17-01
Re: 283 rear breather tube
11-29-04 03:52 PM - Post#563174    
    In response to vabeach56wagon

If you want to go to a pcv system the new classic chevy magazine has an article on this conversion.
Jim 56 Delray

 
angs1957 
Member
Posts: 172

Loc: Australia
Reg: 03-26-04
Re: 283 rear breather tube
12-02-04 12:16 AM - Post#563175    
    In response to angs1957

Thanks guys i`ll check out wrecking yards first then go repo if i cant find one.

 
jetmech727 
Member
Posts: 1

Loc: Indianapolis, IN
Reg: 12-07-04
Re: 283 rear breather tube
12-07-04 08:30 PM - Post#563176    
    In response to angs1957

I have used a freeze plug and the put pvc valve in the valve cover that works just fine if not better than stock

 
Anonymous 

Re: 283 rear breather tube
12-08-04 03:13 AM - Post#563177    
    In response to jetmech727

ANY SB road draft tube, 56-62 (55 blocks are totally different), will fit. SOME cars went to a PCV system in 62, depending on state regulations (such as Cal). The 56 Road draft tube has slightly different bends than 57-62 tubes, but they will all still interchange. In 62, when the PCV system began, the tube was replaced with a fitting which attached with the same bolt that retained the tube on earlier engines. This fitting should be as common as dirt. If you should choose to go with the fitting instead of the tube, you simply need a length of hose and a PCV valve installed between the fitting and a MANIFOLD vacuum port at the base of the carb. Also, some cars use a push-in rubber grommet for the hole in the rear of the block and a tube was pushed into this grommet. Personally, I prefer the bolted-in fitting because it makes a more positive seal at the hole with a fresh circle gasket. One important thing about switching to the fitting-hose-PCV valve, is that you are not coating the underside of your car with oil vapors which are emitted from the road draft tube. This is no problem if your car is a trailer queen, but in time, if you drive your car, the underside of your car can become pretty messy. I recently had a FULL 2 1/2in exhaust system fabricated for my car (including 2 1/2in manifolds) and I had the muffler shop weld a short piece of 1/2in pipe into the right ex pipe. I then installed one of those check valves that you see installed in the headers of drag cars for evacuating crankcase vapors. I then connected my road draft tube to the check valve with a piece of 1/2in gas hose. Now, all my crank case vapors get sucked into the right ex pipe (I also had to install a restriction in the length of hose so that there wouldn't be an excessive vacuum pulled into the crankcase (I made the restriction with a short length of alum rod and drilled about a 1/8in hole in it), works just right!

 
inline0_0 
"11th Year" Silver Supporting Member
Posts: 1449

Age: 71
Loc: Arizona desert
Reg: 03-10-04
Re: 283 rear breather tube
12-09-04 04:52 AM - Post#563178    
    In response to angs1957

Sent you a PM - Doug


 
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