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Re: Newly Rebuilt 327
Hotrod Lincoln #1399997 Thu Mar 04 2021 07:42 PM
Joined: Dec 2020
Posts: 46
G
Wrench Fetcher
For sure coming from the breather cap.


1958 3100 Apache 327 engine
Re: Newly Rebuilt 327
Guitplayer #1400005 Thu Mar 04 2021 08:03 PM
Joined: Feb 2004
Posts: 22,144
H
'Bolter
What kind of PCV valve setup do you have? A road draft tube only works at speeds above 20-25 MPH, and some aftermarket valve covers don't have enough baffles to prevent blowby from making its way out of a vented oil filler cap.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Newly Rebuilt 327
Hotrod Lincoln #1400092 Fri Mar 05 2021 12:29 PM
Joined: Dec 2020
Posts: 46
G
Wrench Fetcher
No PCV valve. Thinking about it though


1958 3100 Apache 327 engine
Re: Newly Rebuilt 327
Guitplayer #1400140 Fri Mar 05 2021 09:12 PM
Joined: Feb 2004
Posts: 22,144
H
'Bolter
Did you reinstall the road draft tube that goes down beside the bell housing on the driver's side? If the crankcase isn't vented in some fashion, the oil fill cap will be the only way for vapors to vent. Until the rings seat properly from several miles of actual driving under load, not just running in place, there will be a considerable amount of blowby. Don't just think about the PCV- - -do it. There used to be a kit to change over from a road tube to a PCV-- - - -I installed hundreds of them when California made everybody swap to a closed crankcase vent system back in the 1970's.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Newly Rebuilt 327
Guitplayer #1400148 Fri Mar 05 2021 10:03 PM
Joined: Mar 2010
Posts: 305
B
Curmudgeon
https://www.chevytalk.org/fusionbb/showtopic.php?tid/324558/

Sorry to interrupt the discussion. It may be nothing to worry about.
This forum mentions a 64 can have a threaded hole that "may" open up to the oil galley.

Re: Newly Rebuilt 327
Guitplayer #1400152 Fri Mar 05 2021 10:31 PM
Joined: Dec 2020
Posts: 46
G
Wrench Fetcher
Ahhhhhhh....... PCV valve a must. THANKS!!!!!


1958 3100 Apache 327 engine
Re: Newly Rebuilt 327
Guitplayer #1400182 Sat Mar 06 2021 12:51 AM
Joined: Dec 2008
Posts: 1,006
5
'Bolter
So did you have a draft tube, like Jerry asked?


Brian
1955.2 3100 Truck


The older I get the more dangerous I am!!!!!
Re: Newly Rebuilt 327
Guitplayer #1400420 Sun Mar 07 2021 07:10 PM
Joined: Dec 2020
Posts: 46
G
Wrench Fetcher
That I do not know.


1958 3100 Apache 327 engine
Re: Newly Rebuilt 327
Guitplayer #1400422 Sun Mar 07 2021 07:38 PM
Joined: Feb 2004
Posts: 22,144
H
'Bolter
It's pretty hard to ignore a piece of steel tubing over an inch in diameter hanging down beside the oil filter, or a 1 1/2inch hole in the engine block behind the intake manifold beside the distributor. There should also be a round canister under the intake about 6" long that connects to the vent hole behind the manifold.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Newly Rebuilt 327
Hotrod Lincoln #1400463 Mon Mar 08 2021 12:37 AM
Joined: Sep 2011
Posts: 856
B
'Bolter
Originally Posted by Hotrod Lincoln
It's pretty hard to ignore a piece of steel tubing over an inch in diameter hanging down beside the oil filter, or a 1 1/2inch hole in the engine block behind the intake manifold beside the distributor. There should also be a round canister under the intake about 6" long that connects to the vent hole behind the manifold.
Jerry

Some pics would be nice, might not even be a 327. Seen many so call 327 that were later 350s.


BC
1960 Chevy C10 driver 235 T5 3.73 dana 44
1949 GMC 250 project in waiting
1960 C60 pasture art
G.M dealer tech since 1980 & counting
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