Plymouth 225 Slant Six 2025 Specs. The 225 cubic inch slant 6 enjoyed the longest production run of all, being manufactured between 1960 and 1983. The 225 engine produced 145 horsepower, which was increased when the.

The dodge 225 was built from 1960 until 1983. If 24 mpg is good enough, then a 225 will do just fine.