"Driven home" (the point) No OHC V engines!!!

The Colorado has a timing chain in the back of the block also. That's what I heard. Have you considered a D100?
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The Colorado timing chain is a 2 day job. Another genius design. I will say, I had 164,000 on mine when I traded it in. Probably just in time. The Tacoma that replaced it was a different league.