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Old 11-14-2002, 07:32 PM
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Question DO I NEED A PCV VALVE?

I DONT HAVE ANY EMISSIONS ON MY 350 CHEVY SO DO I NEED THE PCV VALVE OR CAN I PUT A BREATHER COVER ON IT AND PLUG THE WHOLE IN THE CARB <img src="confused.gif" border="0">
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Old 11-14-2002, 08:46 PM
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you don`t have to run one, but I would, it has no effect on performance, one benefit of it is it helps to keep the oil cleaner and less diluted by ridding the crankcase of blowby.
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Old 11-14-2002, 08:56 PM
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[quote]Originally posted by IHAVECHEVYPARTS:
<strong>I DONT HAVE ANY EMISSIONS ON MY 350 CHEVY SO DO I NEED THE PCV VALVE OR CAN I PUT A BREATHER COVER ON IT AND PLUG THE WHOLE IN THE CARB </strong><hr></blockquote>

Run a PCV by all means and run it on the left bank, (drivers side) with a baffled valve cover. When I purchased my 46 Ford witha 400 small block chevy it was pushing oil out of almost every seal. It han and old Holley less a PCV port. I installed a new 600cfm carb and a PCV first on the right side then was told it should be on the left, heaven knows why, but i did. The car hasn't pushed a drop of oil since! P Postitive C Crankcase V Ventilation........run it off the PCV port of your carb. A very small price to pay for a solid running and free breathing engine.<a href="http://groups.msn.com/randomrodders" target="_blank">randomrodders</a> <img src="graemlins/pimp.gif" border="0" alt="[pimp]" />
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Old 11-15-2002, 05:45 AM
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I do not believe it matters which side the PVC goes. Chevrolet has put them on the drivers side (ZZ4's) the passenger side (ZZ430's) and in the front of the intake (mid to late 60's SBC).
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Old 11-15-2002, 06:20 AM
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Since you MUST run some sort of vent on your engine (in the old days they used a 'road tube' that dumped crank case vapors on the road), you might as well use a PCV valve. It is one pollution control device that serves a good purpose. As mentione in above posts, they are designed to proactively keep crank case pressure at a minimum, reducing pollution of your oil. A minor but worthwhile benefit is that it takes unburned hydrocarbons form the crank case and puts them back through the engine. Probably improves your gas mileage by 0.00001 mpg! seriously, it is a good thing to have on your engine.

[ November 15, 2002: Message edited by: willys36@aol.com ]

[ November 15, 2002: Message edited by: willys36@aol.com ]</p>
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Old 11-15-2002, 07:34 PM
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THANKS FOR THE IMPUT GUYS
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Old 11-16-2002, 08:48 AM
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Are all carbs equipped with a pcv fitting or just some of them? This is like a timming problem 4 me. Never get it figured out, but its easier than I make it. HG
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Old 11-16-2002, 10:13 AM
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No, not all carbs have them. Fall back is to find a pipe port on one of the intake runners. On one installation I did I got a carb adaptor from Speedway, drilled a 3/8" hole in the side that went into the carb ports and JB welded a brass pipe in the hole and made my own inlet port. Be creative.

[ November 16, 2002: Message edited by: willys36@aol.com ]</p>
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Old 07-25-2009, 05:52 PM
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Pcv Valve What Do I Do With It.

I have a 1963 impala with a small block 350. It came with aftermarket valve covers and air filter housing. Other then that it looks pretty original. I purchased stock 283 valve covers and a stock 63 impala air cleaner. What I want to know is what do I do with the pcv valve. The stock 283 valve covers dont have a hole and I dont want to drill one on the valve cover. I know its good to run one but is there any where else I can put it. Thanks!
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Old 07-25-2009, 06:07 PM
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Quote:
Originally Posted by SLICKSHEEZZY
I have a 1963 impala with a small block 350. It came with aftermarket valve covers and air filter housing. Other then that it looks pretty original. I purchased stock 283 valve covers and a stock 63 impala air cleaner. What I want to know is what do I do with the pcv valve. The stock 283 valve covers dont have a hole and I dont want to drill one on the valve cover. I know its good to run one but is there any where else I can put it. Thanks!
The engines that originally came with these valvecovers are the ones that had the "road draft tube" that came out of the block next to the distributor hole, that was connected to a canister baffle down inside in the lifter valley. Your 350 is not cast or machined for these parts, there is no way to add them. The intakes for these engines had a oil fill tube hole in the front end/edge in front of the water outlet, this hole then had a tube filler and cap pressed into the hole. Best you could do is maybe machine the fill hole into your intake if it is cast to accomodate it, run a fill tube with a breather on it, and then find a spot in the rear of the intake to drill and add a PCV hole, grommet and pcv valve, and build a small baffle over the lifter valley side of the PCV hole so it can't suck oil. Been there and done that.
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Old 07-25-2009, 06:48 PM
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Holy crap! This thread is almost seven years old!!
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Old 07-25-2009, 08:46 PM
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Haha, while were going back in time let me ask...
Do the Holley Double Pumpers (4779-9) have pcv provisions? How would i go about this, any differently?
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Old 07-25-2009, 09:04 PM
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Quote:
Originally Posted by SLICKSHEEZZY
I have a 1963 impala with a small block 350. It came with aftermarket valve covers and air filter housing. Other then that it looks pretty original. I purchased stock 283 valve covers and a stock 63 impala air cleaner. What I want to know is what do I do with the pcv valve. The stock 283 valve covers dont have a hole and I don't want to drill one on the valve cover. I know its good to run one but is there any where else I can put it. Thanks!
Here read this and drill a real pretty hole and get a grommet that fits and it will look fine. valve cover and breathers . Cole
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Old 02-02-2012, 09:10 PM
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They make plates to go under carbs for pcv's. what ever you do dont put the pcv hose to one of your intake runners youll lean out that cylinder it needs to be right under the carb or in the plenum!!if you have a devided plenum dont put to just one side it will lean out those cylinders.

jester
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Old 02-02-2012, 09:17 PM
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Uh Jester, this thread started life in 2002, then was reborn in 2009. I hope they have it fixed by now.
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