PCV Valve Recommendation / Housing Modification
If your PCV Housing deteriorated from the heat like mine, you can pick up a couple parts from Home Depot to make a new, tighter fitting housing like what I did. The housing is not available at parts store. I don't even know if GM has them in stock.
Other than replacing your housing, it is suggested by GM that you replace the valve with an OPEN ORIFICE type. The Open valve with 0.100 hole can be purchased at Autozone. Parts guy at Autozone will not be able to cross reference for you.
OEM Valve is Fram FV391 or ACDelco #CV948C
GM Suggested GM#12572717 also known as AC Delco #12572717 my cross reference for Lube Finer found at Autozone PC339
Look at the image carefully, the brass cuplink will screw super tightly into the 1/2 inch hose where it will butt up with the larger end of the valve. The one thing I didn't purchase was the 3/8 hose..... thus I splitted the original out hose as you can see from the final assembly image. Use sharp razor blade for the ground wire slit in hose (maybe someone can chime in why a ground wire is needed, can air friction cause an electrical spark as it passes through?).
Write if you need any tips or specs. on the parts.
Good day,
Matt
P.S. This modification of the valve gain a noticeable 1/2 horse hahahaha!!!
http://www.activeone.com/ta/pcvvalve3.jpg
http://www.activeone.com/ta/pcvvalve2.jpg
http://www.activeone.com/ta/pcvvalve4.jpg
Reduce Performance Complications
Hey, Looking at your Avatar of a beanie hat I did reconized you. As I see it, with are dated Fbodies, too many little things can affect the performance. Since purchasing the vehicle, I have gone through and repair and replaced quite a few parts.
The vehicle used to have hesitation, back fire dead acceleration, etc., once the engine was warm. After replacing the right cat, PCV Valve, and Housing, the performance is better. You have to remember, the fixed inlet hole in the new-designated PCV valve is steady with the inflow unlike the old with a spring mechanism. The spring mechanism letting the air in can get sticky from the gunk through time and not spring back to let air passage.
The new valve is hollow inside and can be easily clean with gasoline to remove the sticky residue and be reused for the life of the vehicle.
My housing modification is a clean inlet where the big end of the valve does not butt against the plastic housing, for it is a clean passage to the brass coupling. This is just a better design.
Either way, we do what is necessary not to incur problems with the vehicles.
Matt
Quote:
Originally Posted by
SandmanWs7
Did the new PCV valve fix your cars problem?
