powerwagon67

My 22R has a noise and it seems it is from the bottom end and the repetition sounds like the lower end and towards the back of the block. It only makes the noise when cold and stops when it has warmed up for about 5 mins at idle or about 3-5 miles of driving. After that it is super quiet and I've been driving it like this for a while. Does it sound like a main or rod or piston slap. Any ideas on where to start looking if I tear it down. Its an 87 2wd and just hit 100,000 miles. TIA