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#1 |
Registered User
Join Date: Aug 2012
Location: Birmingham, AL
Posts: 25
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Air filter/cleaner question
I have a 71 P10 with an 250 inline 6. It originally came with an offset air cleaner that had a riser/connector tube that went from the carb to air filter house. A hose would run from the side of that connector and into the side of the valve cover (see pic of an example).
Mine is missing the offset air cleaner and connector but still has the hose coming out of the valve cover. So my question is would there be any issues with just taking that hose off and plugging the hole in the valve cover and then putting smaller air cleaner? Found one for that is 6" x 2.5" that will fit the space and carb. Thanks! |
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#2 |
Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
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Re: Air filter/cleaner question
The hose is the crankcase breather and it uses the carb. inlet to evacuate the crankcase.
While you could just use a breather you loose the positive vacuum effect. Also the TAC function is lost for warming inlet air by not using the air cleaner assy. The type of circular air filter that would fit in the space is really too small for the engine. Might want to look at fabricating an elbow similar to the factory rise and cross over the engine to the cold side. Then use a cone shape hose mount filter so popular on cold air inlet kits. In fact a universal kit might be a good start.
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Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
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#3 |
Registered User
Join Date: Aug 2012
Location: Birmingham, AL
Posts: 25
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Re: Air filter/cleaner question
Thanks -- good advice
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#4 |
Registered User
Join Date: Apr 2013
Location: Knoxville TN
Posts: 1,170
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Re: Air filter/cleaner question
My Dad ran a smaller filter that that on a 305 V6 for years and it didn't seem affect the mpg or power. It does need changing more often though. Some filters like Wix provides CFM rating on box.
Is there any 3/8" or larger ports on intake to run a PCV? |
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#5 |
Registered User
Join Date: Aug 2012
Location: Birmingham, AL
Posts: 25
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Re: Air filter/cleaner question
not sure -- i may have a line on an offset air cleaner -- will aim get one of those on it. thanks
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#6 |
Registered User
Join Date: Apr 2013
Location: Knoxville TN
Posts: 1,170
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Re: Air filter/cleaner question
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#7 |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,496
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Re: Air filter/cleaner question
I bought an ofdset air cleaner off the parts board a few years back for $50. Post a WTB ad there.
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#8 |
Senior Member
![]() Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,365
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Re: Air filter/cleaner question
Hey 71shortygray ...
I luv your ride ![]()
__________________
A husband can be right...or...A husband can be happy. ![]() 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. ![]() 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc ![]() ![]() JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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#9 |
Registered User
Join Date: Aug 2012
Location: Birmingham, AL
Posts: 25
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Re: Air filter/cleaner question
thanks brother
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