Re: Crankcase Ventilation Filter
 

My understanding is that the 63 (305D) didn't have pcv valves in the heads. Please correct me if I'm wrong.

Re: Crankcase Ventilation Filter
 

Out of the 62 manual it says the 305D engines had breather caps on the valvecover and a road draft tube, so no pcvs.
I believe it was said on other motors with pcv those engines will have a fresh air filter and canister located on the block behind the drivers side head, same place as to where the road draft tube is on 305D engines.

Re: Crankcase Ventilation Filter
 

Thanks for clarifying that Steve.

Re: Crankcase Ventilation Filter
 

Not sure the 305E applies the same ventilation as 305D ?? won 63 305E there is a filter behind driver side crankcase no other have I found ?? JM:signthankspin:

Re: Crankcase Ventilation Filter
 

63 is the first year for a positive crankcase ventilation system. In that system, there are 2 pcv valves, one under each cover, and a crankcase ventilation filter in a housing located behind the left cylinder head. The part number for the pcv valves AC/Delco type CV623C, and the filter is Napa/WIX 2718/42718. I hope this is of some assistance in your search.

Cordially,

Lewis Ellis Matkin, Jr.
Ridge Manor, Florida
1965 1002 GMC V6-305E (soon to be 401M)

Re: Crankcase Ventilation Filter
 

Thanks guys, all parts are there, pictures were big help. jm