The Chevrolet Performance ZZ632/1000 V8 is the biggest and most powerful engine GM has ever made. The 10-liter V8 race motor is rated at 1004 horsepower.
Have the 3rd Gen Coyote in the truck, what a gem. And even tuned on 93 truck absolutely rips for a heavy loaded Platinum, not whipple'd yet. Love that block, rips in the truck, but so smooth, sounds better than sex, great gas mileage in real world driving (better than the 3.5 which is rated higher and better towing mileage at 6-8k lbs than the 3.5 which guzzles like an crappy running 60s block lol, that engine just drinks fuel towing)Not saying that its a bad motor, but nobody has taken them past 10K reliably that I know of.