By the way do your valve lash. (AKA valve cleance) intake is .10mm and exhaust is .20mm. wile your doing that its suppose to be done perodicaly you'll be amazed how much itll wake your truck up to. When you have your truck in TDC in #1 cylinder do the valves accordingly you can look em up, and then pop the inspection plate of on the transmission bell housing mark the fly wheel and turn the it 360 degrees untill you see the mark and do the second set of valves. Its just a sugestion to do since your truck has 180K on her you got 320k to go if you take care of her

 

20mm , that's a big ole gap ...
Lol just picking man , we know what you ment. Some take it down to around .017

 

I forgot the damn zeros! my bad sorry.