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BUSY BOLTERS Are you one?  The Shop Area
continues to pull in the most views on the Stovebolt. In August alone there were over 22,000 views in those 13 forums.
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Mod | | | Forums66 Topics126,777 Posts1,039,265 Members48,100 | | Most Online2,175
Jul 21st, 2025 | | | | Joined: Mar 2000 Posts: 137 'Bolter | | 'Bolter Joined: Mar 2000 Posts: 137 | i posted this on the big bolts side -didnt get any answers ? maybe this is where it will happen ? anyway i got a pvc system for my 270 engine ,on installing it i noticed the line w/the pcv valve in it -when you suck on either end it is the same ? is my valve stuck open -bad ? if so where can i find another? also some of the ones i seen at the "stovebolt reunion in kc " they all had a big dia. cap and tube to the block ! mine is smaller /what trucks had the bigger one ? /anybody got one ? thanks mike | | | | | Joined: May 2001 Posts: 7,440 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,440 | The PCV valve comes apart. There is a valve and a spring inside. The valve has a hole in it. Sucking on either end you are sucking air through the hole. Manifold vacuum should open the valve. Take it apart and clean it. Somewhere in the mid '50s they were changed from an oil bath breather to a paper filter one. That may be the smaller/bigger you noticed. The one on my Suburban is the paper filter one from a '59. | | | | | Joined: Mar 2000 Posts: 137 'Bolter | | 'Bolter Joined: Mar 2000 Posts: 137 | hi cletis i believe the truck i seen at the reunion /was yours ? the top of the tube was bigger than the one i got& used ? anyway i will try to disassemble the pvc valve ,like i said i could blow thru it both ways /made me think it was stuck open ? thanks mike | | | | | Joined: Dec 2008 Posts: 1,915 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,915 | It never closes.
Applying vacuum to the engine side reduces the opening size. | | |
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