What is this? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69ride · 03-31-2005, 02:38 PM

And what does it do? And do I need this?

This is a 67 283.

Livrat · 03-31-2005, 02:46 PM

That is part of the crankcase breather/PCV system which is not used after 1968... it is not needed if you plug the hole on the top of the block with a "freeze plug" and use a PCV system from a later small block that uses it through the valve covers. but if your valve covers do not have any holes you definately need it.

69ride · 03-31-2005, 02:49 PM

Thank you. I am running the newer style valve covers with PCV valve.

Livrat · 03-31-2005, 03:06 PM

then just head down to your local auto parts store and pick up a metal freeze plug, put on some sealant and tapp it in the hole in the top of the block and remove the can in the valley

Livrat · 03-31-2005, 03:07 PM

if you like, you can also remove the oil filler tube on the intake manifold and plug it too. If you leave it on be sure to have a solid cap on it and not a breather cap

67ChevyRedneck · 03-31-2005, 03:39 PM

I learn something new everyday....

03-31-2005, 02:38 PM	#1
69ride All Go, No Show Join Date: Jul 2003 Location: Creighton SK Posts: 286	What is this? And what does it do? And do I need this? This is a 67 283. Attached Images __________________ 69 LWB Rebuilt 283, aluminum intake, edelbrock carb, Mild Melling Cam, HEI.

03-31-2005, 02:49 PM	#3
69ride All Go, No Show Join Date: Jul 2003 Location: Creighton SK Posts: 286	Thank you. I am running the newer style valve covers with PCV valve. __________________ 69 LWB Rebuilt 283, aluminum intake, edelbrock carb, Mild Melling Cam, HEI.

03-31-2005, 03:39 PM	#6
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	I learn something new everyday.... __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

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03-31-2005, 02:46 PM	#2
Livrat Member #1049 Join Date: Jun 2000 Location: Troy Montana Posts: 3,940	That is part of the crankcase breather/PCV system which is not used after 1968... it is not needed if you plug the hole on the top of the block with a "freeze plug" and use a PCV system from a later small block that uses it through the valve covers. but if your valve covers do not have any holes you definately need it.

03-31-2005, 03:06 PM	#4
Livrat Member #1049 Join Date: Jun 2000 Location: Troy Montana Posts: 3,940	then just head down to your local auto parts store and pick up a metal freeze plug, put on some sealant and tapp it in the hole in the top of the block and remove the can in the valley

03-31-2005, 03:07 PM	#5
Livrat Member #1049 Join Date: Jun 2000 Location: Troy Montana Posts: 3,940	if you like, you can also remove the oil filler tube on the intake manifold and plug it too. If you leave it on be sure to have a solid cap on it and not a breather cap



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