Vintage Engines: Chevrolet's "W" Motor
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The right pistons make all the difference in W motors. These light forgings are made for Bruneau Performance by Ross Pistons and machined for any application. Starting at the top left, popular ones are: 0.060-over 348, 10:1, using a BBC rod on a 409 crank for 388 cubes; similar to previous, but using a BBC 427 crank and 6.385-inch rod for a 414-inch stroker motor; the bottom row are all for 409s with BBC cranks-the left is 10:1 cr, the middle is 12:1 for a truck block, and the right 10:1 for a truck block with 484 ci. (Photo courtesy of Bruneau Performance) View Related Article
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