1968 Plymouth Road Runner Engines Options:
383 V8 335 hp @ 5200 rpm, 425 lb-ft @ 3400 rpm.
426 Hemi V8 425 hp @ 5000 rpm, 490 lb-ft @ 4000 rpm.

Performance:
383/335 hp: 0-60 in 7.1 sec, 1/4 mile in 15.0 sec @ 96mph.
426/425 hp: 0-60 in 5.3 sec, 1/4 mile in 13.55 sec @ 105mph.

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Plymouth went back to the basics when they created the 1968 Road Runner. After deciding that muscle cars had gotten away from their original purpose of being fast affordable thrills, Plymouth paid Warner Brothers $50,000 to affix the ”road runner” cartoon bird onto its new vehicle, which was based on a stripped Belvedere, thus in 1968 the Road Runner was born. The standard engine was none other than MOPAR's tried and true 383 power-plant V8, included the heads, manifolds, camshafts, crankcase windage tray, and valve springs from the race ready 440 Magnum. The new Road Runner was also equipped with heavier duty suspension, manual transmission, and numerous other performance pieces. Comfort was basic with no carpeting - just rubber floor mats and a bench seat. Mopar performance seekers were pleased with the new addition, as the base price started at just $2896 and for just $714 more the Hemi 426 could be had.

1968 Plymouth Road Runner Production:
2D Pillared Coupe: 29,240
2D Hardtop Coupe: 15,359

Engines Options:
383 V8 335 hp @ 5200 rpm, 425 lb-ft @ 3400 rpm.
426 Hemi V8 425 hp @ 5000 rpm, 490 lb-ft @ 4000 rpm.

Performance:
383/335 hp: 0-60 in 7.1 sec, 1/4 mile in 15.0 sec @ 96mph.
426/425 hp: 0-60 in 5.3 sec, 1/4 mile in 13.55 sec @ 105mph.