Goldie, my 2007 Ebay truck with 189K
I purchased some parts and let someone else to install them, my fault for this failure. When I checked the lifters I found that the new lifters I purchased and installed are 2/16 shorter than the originals, so this was the ticking I just listen to for the last 2,000 miles. Hope the cam isn't tosted from it. Question, are there 2 part numbers for the AFM/DOD lifters?
There are 2 different versions of factory AFM lifters. The difference isn't the length though and they both use the same part number. You should measure it from where the pushrod sits to the the roller. You will need to place something like a small socket inside of it then measure the length and compare. I don't believe the overall length should have a huge impact. Only the area I just suggested measuring.