[bmalone]

Sideoiler production started in March of '65. Like the preceding centeroilers, they had solid lifters. In '68 Ford toned down the 427 by offering it with Hydraulics (down to 390 HP).

This was the phase-out and last year of the 427 as offered in cars. The 428 would be the replacement (introduced in '66). It was much cheaper to build due to less stringent production techniques.