Editing Ford FE engine (section)

====406====
[[File:Ford 406 TriPower.jpg|thumb|right|406 with TriPower intake and carbs, on a
[[Ford Galaxie]]]]

The 406 engine was introduced in 1962 and only lasted till 1963, giving way to the 427. It used a new {{convert|4.13|in|mm|2|adj=on}} bore with the 390's {{convert|3.785|in|mm|2|adj=on}} stroke, giving a displacement of {{cvt|405.7|cuin|L|1}}, rounded up to "406" for the official designation. The larger bore required a new block casting design allowing for thicker walls, but otherwise was very similar to the 390 block.<ref>''Clarke'', p. 11</ref>

Testing of the 406, with its higher power levels, led to cross-bolted mains – that is, main bearing caps that were secured not only by bolts at each end coming up from beneath, but also by bolts coming in from the sides through the block. A custom fit spacer was used between the cap and the block face. This design prevented the main bearing caps from "walking" under extreme racing conditions, and can be found today in many of the most powerful and modern engines from many manufacturers.

=====406 engine configurations and applications=====
* 4V, 11.4:1 — {{convert|385|hp|kW}} at 5800&nbsp;rpm and {{cvt|444|lbft|N.m}} at 3400&nbsp;rpm
** 1962–1963 Ford
** 1963 Mercury
* 3x2V, 11.4:1 — {{convert|405|hp|kW}} at 5800&nbsp;rpm and {{cvt|448|lbft|N.m}} at 3500&nbsp;rpm
** 1962 Ford
* 3x2V, 12.1:1 — {{convert|405|hp|kW}} at 5800&nbsp;rpm and {{cvt|448|lbft|N.m}} at 3500&nbsp;rpm
** 1963 Ford, Mercury
{{clear}}