To PCV or not to PCV
- Thread starter Iowan
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
78C10BigTen
Full Access Member
- Joined
- Apr 12, 2017
- Posts
- 15,603
- Reaction score
- 24,050
- Location
- pennsylvannia
- First Name
- Ted
- Truck Year
- 1978
- Truck Model
- C10 BIG TEN
- Engine Size
- 350
That place isnt too far from me.... crazy
73c20jim
Full Access Member
- Joined
- Jun 11, 2018
- Posts
- 2,282
- Reaction score
- 2,924
- Location
- Tombstone, AZ
- First Name
- Jim
- Truck Year
- 1973, 1973
- Truck Model
- C20 2WD Custom Deluxe. C10 2WD Base Model
- Engine Size
- 350 CID 195/260 HP Goodwrench crate, 400 CID 2bbl
So just having a PCV hose to carb base and a vent to the air on the other valve cover is only half a system?
If I plug the PCV will the carb need to bee re-tuned? Less air going into carb?
If I plug the PCV will the carb need to bee re-tuned? Less air going into carb?
Rusty Nail
Full Access Member
- Joined
- Jan 29, 2015
- Posts
- 9,791
- Reaction score
- 9,696
- Location
- the other side of the internet
- First Name
- Rusty
- Truck Year
- 1977
- Truck Model
- C20
- Engine Size
- 350sbc
73c20jim
Full Access Member
- Joined
- Jun 11, 2018
- Posts
- 2,282
- Reaction score
- 2,924
- Location
- Tombstone, AZ
- First Name
- Jim
- Truck Year
- 1973, 1973
- Truck Model
- C20 2WD Custom Deluxe. C10 2WD Base Model
- Engine Size
- 350 CID 195/260 HP Goodwrench crate, 400 CID 2bbl
Reading up in the service manual, one side is intake and the pcv side is exhaust. Gonna keep PCV and get a new filter for the intake side.
Rusty Nail
Full Access Member
- Joined
- Jan 29, 2015
- Posts
- 9,791
- Reaction score
- 9,696
- Location
- the other side of the internet
- First Name
- Rusty
- Truck Year
- 1977
- Truck Model
- C20
- Engine Size
- 350sbc
I have wondered before about putting a PCV on BOTH sides...
idahovette
Full Access Member
- Joined
- Aug 7, 2016
- Posts
- 6,580
- Reaction score
- 14,135
- Location
- Weiser Idaho
- First Name
- Perry
- Truck Year
- 1975-1979
- Truck Model
- K20-K10
- Engine Size
- 350
Aren't PCV valves one way?
Rusty Nail
Full Access Member
- Joined
- Jan 29, 2015
- Posts
- 9,791
- Reaction score
- 9,696
- Location
- the other side of the internet
- First Name
- Rusty
- Truck Year
- 1977
- Truck Model
- C20
- Engine Size
- 350sbc
Shhh..dude.you're killin me.
idahovette
Full Access Member
- Joined
- Aug 7, 2016
- Posts
- 6,580
- Reaction score
- 14,135
- Location
- Weiser Idaho
- First Name
- Perry
- Truck Year
- 1975-1979
- Truck Model
- K20-K10
- Engine Size
- 350
Sorry , all I know is one side blows the other sucks LOL
Colin
Full Access Member
- Joined
- Mar 12, 2018
- Posts
- 226
- Reaction score
- 228
- Location
- Covington, GA
- First Name
- Colin
- Truck Year
- 1978
- Truck Model
- K10 Silverado
- Engine Size
- 350 cu. in.
Found this diagram online...
You must be registered for see images attach
Last edited:
436'd skylark
Member
- Joined
- Nov 22, 2015
- Posts
- 45
- Reaction score
- 34
- Location
- VT
- First Name
- Joe
- Truck Year
- 2005
- Truck Model
- 2500HD
- Engine Size
- Durajunk
The vacuum pump you're thinking of isn't for ventilation. It's a crucial part of a dry sump oil system to control oil. It is not part of the pcv system.
Blue Ox
Turning Diesel Fuel Into Fun
- Joined
- Mar 27, 2018
- Posts
- 4,899
- Reaction score
- 10,855
- Location
- LI-NY
- First Name
- Derek
- Truck Year
- MCMLXXXV
- Truck Model
- K20HD
- Engine Size
- 6.2L
The vacuum pumps are to help the rings seal. Dry sumps have suction pumps but they're to scavenge oil, not to pull crankcase vacuum.
