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Labor Day Putting down your wrenches or time for MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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| | | Forums66 Topics128,006 Posts1,055,268 Members48,418 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Feb 2012 Posts: 112 'Bolter | | 'Bolter Joined: Feb 2012 Posts: 112 | I have a chevy 261 six... The pcv valve is off the road draft tube and has number ac 1544935... Upon disassembly it looks like it is more of a specific sized orifice as you can get flow in both direction and it doesnt look like there are any moving parts inside.. Is this a true pcv valve system?
In relation it had a rochester carb 7015013 which is specific to chevy 261
Is carb designed/jetted to be used with this specific pcv valve (control vacuum leak)
This came off a running motor so everything worked in present configuration.. Im asking question as ive swapped out a zenith 270 gmc carb (runs great) but am just adding pcv system ... Compatible with zenith carb? | | |
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