Butler Perrformance V-8 Engine Build - High-Tech, Lightweight, and Ready to Take on the World
The piston-and-rod assembly is quite unusual for a Pontiac. The pistons are custom-dished Ross units that provide a final compression ratio of 10:1. They weigh 520 grams, have seven gas ports, and use Total Seal gapless top rings. They are connected to the rods by way of 190-gram Childs and Albert pins. The piston-to-deck height is zero. The rods themselves are GRP 3000 Series billet aluminum units with a 6.8-inch center-to-center length. They are used by Top Alcohol Dragster and Funny Car racers and are rated to handle up to 3,400 hp. The GRP rods also feature patented "thumbprint" serrations that allow for rod-to-cap alignment on two planes, greatly speeding up assembly. Rod bolts are ARP 2000 series units. The rods check in at 825 grams each, which compared to 800 grams for the steel rods used on the old motor. View Related Article
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