Originally Posted by grivlet
My friend and i have been trying to find the stock piston ring size for a 91 5.0L HO V8. Summit has sent us the wrong rings twice when we asked for "stock replacement" rings. I was wondering if anyone could tell me the size or a part number of some mid-range piston rings. thanks!
these are the size you need
1986-95 302cu. in. Eng. Ford, Mercury, Vin: N 5.0 Litre
cyl dia. (bore).....101.60mm 4.000
Qty & Width....... comp .......16 - 1.5mm......oil.....8 - 4.0mm
if you are just putting it back stock here it is at advance auto parts...
AE Clevite Engine Parts Plain Cast Ring Set
Part Number: 3100009