Thread: Compression tester
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Old 07-01-2020, 01:47 PM   #4
petehoovie
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Default Re: Compression tester
Quote:
Originally Posted by fordwife View Post
All ford v8 heads,flatheads from 39 aand up have 14mm spark plugs. some in the early 30s had 18 mm plugs if I remember right.

Yup! My '34 has 18mm plugs....
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