Originally Posted by Grandpa
Sorry to hear about your luck. Unfortunately, these Coyote motors just don't like a lot of power. Anyone making over 550rw should be planning for a motor build. It's not IF it breaks, but when. And even with a built motor, the blocks are still very questionable at best. For big power, these cars need a very expensive full build up.
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People have held the blocks to 1000hp levels without much issue.