While the Chrysler Slant Six did not have the raw power of the Hemi, it was just as sophisticated. The Slant Six went into production in 1960 and lasted until 1983. The 30º tilt was borrowed from Mercedes-Benz and it offered several engineering advantages over straight up engines from the Ford, AMC and GM. The greatest advantage was intake manifold runner length. With a longer intake runner, it is possible to generate more low-end grunt. Also, more plenum volume gives better driveability. But the Slant Six was plagued with intake manifold cracking throughout its life. Revell made a 1:4 scale model of the Slant Six that was motorized with moving pistons, valves and belts.