It runs good I have replaced the timing chain/gears, cam / follower assembly. I just bought the truck two months ago the marks are all lined up on tdc even the distributer and yet when it is running and you hit it with a timing light it is not anywhere near the degree plate, in fact we advanced the timing with the light electronicly and it is advanced 29.5 degrees and the only complaint that I have about it is that there no top end at highway speed. If you are starting from dead stop and going through the gears it will climb as far as you are willing to push it but if you hold a speed of 60-70 and give it gas it barely responds what could I do