Corey Henderson isn’t your usual ZR-1 pilot. At least, we don’t think many drivers out there build up LT5s, which requires special tools to degree in those four overhead camshafts.
  This is exactly what Corey feared when he bought his ‘91 ZR-1 in the summer of 1997. Then 22 and reverent of the "foreign" DOHC V8, he explained, "When I bought that car, I vowed I would never do anything to it because the engine was entirely too complex and too expensive to work on."
  Already, Corey was next to ecstatic with his Z’s quickness in the quarter-mile - 12.78 @ 112.2 mph. The ‘91 had about 54,000 miles and had been modified with a big Doug Rippie aluminum radiator, Borla exhaust, and 4.10:1 Richmond gears.
  Then after a year, discontent set