Alright I have my own opinions as to what it is but I am not 100% sure. Just want more .02. At low R's it idles great, no knocks, tings, or anything. Up till about 2500 3K Its fine. Right when it gets a tad over 3K you hear like a Knocking. If it were a rod knock wouldn't you hear it clearly at idle also? It sounds like a piston slap IMO. But just wanted someone elses.
1983 Mustang GT 5.0 Bored .040 BME Aluminum Rods, Flat top pistons rebuilt heads.
1983 Mustang GT 5.0 Bored .040 BME Aluminum Rods, Flat top pistons rebuilt heads.