The fuel pump casting is a zinc alloy, probably one of the ZAMAK alloys, in particular. Similar, if not the same as what is used in the carburetors. With heat, a jig, and patience, the castings can be straightened. There are threads in the forum on straightening the warped airhorn of Rochester B/BC carbs. Same principles should apply.

While I was typing this, Kevin's post appeared. LOL.

I believe Jon G is one of the forum experts. Here's one of his threads on straightening a Rochester carb airhorn that may help.

Doug

Last edited by drdoug; 09/27/2020 1:00 AM.
1947 2nd-Series GMC FC152 3/4-ton
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1953 Chevy Bel Air Sport Coupe Powerglide