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How much displacement can I gain by stroking the Jeep 4.0L engine?

April 26, 2017displacement engine gain jeep stroking

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How much displacement can I gain by stroking the Jeep 4.0L engine?

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A. If you use the standard AMC/Jeep 258 crankshaft, a displacement ranging from 4.5L (standard bore) to 4.8L (0.125″ overbore) is possible. A 4.9L displacement requires a 0.125″ overbore plus an offset-ground 258 crankshaft with a 3.98″ stroke, while a 5.0L displacement requires the same overbore plus an offset-ground 258 crankshaft with a 4.06″ stroke.