Do You Own Big Block MP Valve Covers?? Please Read This ... and Share

I haven't seen as many outright defects in the small block versions but the casting flaws can be severe.

And just as an update to illustrate the points made throughout this thread, more than 300 people have contacted me in response to this advisement with their own 'suspected over-tightening' stories in the meantime. Most were purchased new within the last five years and were installed by competent individuals.