Here we go again, I just bought a 1970-1972 OAI air cleaner base it has the places for 2 vent pipes is this for big block only or is the same for Rallye 350-W-31 cars small block on some photo I've seen PVC on driver side??? Thanks for the help

 

the rallye 350 has 2 holes also. the big and small block had the same base. the small block had a rubber plug in the drivers side hole.

 

All 70-72 O.A.I. bases are the same. There were two different breather arrangements. The W-30 cars and all 455 4 speed cars with W-25 used the dual breathers with a PCV valve in the intake. All small block cars (incl W-31s) and 455 AT W-25 cars used a single breather, PCV in the valve cover, and a rubber plug in the extra air cleaner hole.

 

Thanks for the info hate to sale parts that Idont know,but I know that all I have to do is call on you guys great site .yes its is for sale.