The '47-'55 truck, '49-'54 passenger car and '53-'54 Corvette dipstick dimensions to the marks are all the same. Chevy spec'ed those at 13-5/16" and 13-13/16". I've attached the chart from the '62 Chevy Chassis Parts Catalog (found in group 1.516) for reference. In that catalog, only one P/N - 3701556 - is listed covering all of those engines. There's nothing unique about the Corvette dipstick dimensions.
