Crankcase Ventilation
 

I just put my heads back on. I am trying to decide whether to us carb vacuum open breater, and a pvc valve pulling air through the crankcase or to just use an open breather with no vacuum.
What do you guys think???

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67 Fastback - Arctic White Pearl paint
351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Carter 750 CFM, Comp. Cam 477/510 219/233@.050, Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars.

My 351W Fastback