＜以下引用＞
Ford Now Makes an Cast-Iron Coyote V-8 Block for Drag Racers
Called the "Werewolf," the block gives drag racers a solid option for big power numbers.
The Ford Mustang's 5.0-liter Coyote V-8 is a fantastic engine, but being made of aluminum, it has its limitations. Though lighter than iron, aluminum is also more malleable, which is why an alloy block can't handle as much horsepower as an iron equivalent. Ford Performance recognized a market for those looking for a Coyote V-8 that can withstand higher power levels for sustained periods, so it just introduced a new block made from cast iron instead of aluminum.
Nicknamed "Werewolf," this isn't your average iron block. The material is Class-50 iron, meaning it's a lot stronger than the stuff you'd find in normal engine blocks. Changes to the design include 12-mm head bolt holes, billet steel main caps, drilled oil passages, and a raised crankcase ceiling to create more clearance for the rods.
The cylinders can be bored to 95 mm and stroked to 99 mm, for a maximum displacement of 5.6 liters. The 100-mm bore spacing, main bearing bore size, and deck height have been carried over from the normal Coyote design unchanged.
It's clear this engine is aimed squarely at drag racers looking for more reliability from their high-output engines.
"The drag racers running shootout-level classes are going through several OEM blocks per year, this should get them through a season without any issues," Ford Performance engineer Ron Ewert told Dragzine.
Last week at the Performance Racing Industry trade show in Indianapolis, engineer Dave Born told YouTuber Revan Evan in an interview the engine will likely be used by builders looking to achieve around 1500 to 2000 horsepower, citing that as the reason why the cast-iron weight penalty isn't an issue. (If you're already doing wheelies off the line, what's another 100 pounds in the nose?)
Ford Performance expects the block to become available to customers starting in the first quarter of 2020, priced between $5000 and $6000.
via Engine Swap Depot
＜引用終わり＞
First Look!!! Ford IRON Coyote Race Block 340 Cubes All-New at PRI Show
