The 393 is a stroker combination, that uses a slightly longer 3.850" stroke for more displacement and low-end torque. Compression ratios ranging from low to high make this a versatile setup, available in a variety of performance levels.
This is the most robust stroker combination available, using a 4.000" stroke to arrive at 408 cubic inches. Due to the long stroke this combo makes monster torque, although at the expense of top-end RPM. Regardless it is still a great setup for street/strip applications where the RPM aren't extremely high to begin with. Applications range from low to medium compression making this a fantastic choice when paired with a supercharger!
This is the largest cubic inch displacement we offer for a stock style Windsor block. It uses a lengthy 4.170" stroke to yield 427 cubic inches. As expected, because of this stroke, this motor will be very bottom-end heavy and is best suited for applications such as street cars, tow rigs, and trucks where RPMs will be somewhat limited. Compression ratios range from low to high.