49 geezer, i am not sure what you call the plate. my engine is a 1954 truck 261.I think you are talking about the splash plate that is bolted on the inside of the block where the down draft tube is located. I took some pictures of my plate, my block is at the machine shop,so i can't look at it for you.I don't recall one over the fuel pump. See the links for the pictures, hope this helps.

http://img511.imageshack.us/img511/8775/baffelplatepic12th.jpg

http://img427.imageshack.us/img427/4686/baffelplatepic25zz.jpg

http://img427.imageshack.us/img427/9387/baffelplatepic35fi.jpg

1951 3100 Chevrolet
1951 Chevrolet Suburban Carryall
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