Howdy, I found these items at a yard sale while showing my car (non-Olds) in a car show. Included were a pair of valve covers and this dual quad intake manifold. My research thus far has failed to indicate conclusively what they fit. The valve covers have Offenhauser breathers on them. I had to find new covers for them as they were missing. The holes in the valve covers are 10 3/8" apart. valve covers are 20 3/8" in overall length and the mounting flange is 5 1/8" from flange to flange. The maniflod is a polished Weiand with WO4D cast into it. All could use some polishing but look to be in excellent condition. The manifold may have never even been used.

 

Looks like they are for the 303 and 324 up to 1956. I could be wrong, so if some of you guys here know the older stuff, correct me if I'm wrong.

 

Manifold looks right to me, not sure about the valve covers, they look pretty much right for finned covers, but I could be wrong.

 

The valve covers are definitely first generation Olds 303 324 371, hole spacing tell you this.The Wieland intake could be anything from a 303 through a 371 but not all of them, port size and deck height determines this and it is hard to tell from a picture, all the intakes look the same on the outside and as far as I know they were all marked with wo4d. A set of gaskets would narrow it down in a few minutes if you could get a couple sets.

That is a great find and someone would pay good money for the privilege of purchasing them off you.....Tedd