Roush Propane Racer New Block
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This is the new race block under construction, which came to Roush as an aluminum 5.4-liter raw casting. There, the entire cylinder area was machined away and replaced with a Darton Modular Integrated Deck system-basically interlocking ductile-iron cylinder elements that improve strength and cooling, and permit the 3.70-inch bore size. Stroke will be 4.350 (for just over 374 ci) from a Kellogg steel crank, tied by way of Carrillo rods to Diamond pistons configured for 12.5:1 compression. Durability of the cam chain drive system will be assured with Roush-manufactured steel chain guides and manual tensioners to replace the factory-style plastic guides and hydraulic tensioners. View Related Article
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