How To Hop-Up Your Engine was a re-titling of Soup-Up. Numbering continued from the previous title.
The first editor was Fred Schnaue, but he was shortly replaced by Lee Sparacio who stayed as editor through the end. Mr. Sparacio edited several automotive books in the 1960s.
Like its predecessor, How to Hop-Up Your Engine was a small format, bi-monthly magazine. It went to the large format with issue #20 in June, 1963. After the June, 1963 issue, it was re-titled as Hop-Up.
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How to Hop-Up Your Engine had three years of publisher-provided print volume data (1961 through 1963). In those three years, it was at the bottom of the list of all automotive titles with net paid circulation details. Only 6,000 to 9,000 magazines were printed and distributed monthly.
A total of 17 issues was printed from August, 1960 through June, 1963. All cover images are complete.