- Feb 1, 2007
- Dallas, Texas
- 00 4Runner | 02 919 | 87 XJ6 | 86 CB700SC
H3 Alpha had the 5.3 and it's an easy and common swap to put a 6.0 in when that fails (can you say 'Cold Spark Knock' aka 'massive piston slap'?). Not so easy to convert the rest of the driveline, not and keep the computer from freaking out so that's rarely done AFAIK.This thing was far from stock. Hell, the H3 was never available with a 6.0L either.
While not all of them had the engine blow up as a result, something like half the people with the affected trucks that I knew had the engine crap out on them. Fortunately most were replaced under their extended warranties.A 5.3 with piston slap? Never.
Dad's 2003 Silverado (that the sister-in-law now has) sounds like a diesel on cold mornings. It truly is an example of "GM vehicles will run bad longer than most will run at all."