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A worn bore and a backyard hone'n're-ring job, I would be using plain old cast rings, not moly. Moly coated rings seal better and break in quicker but they are not as forgiving on a worn bore as cast rings. Hastings cast rings are a good choice for these types of builds IMO.




100%

most 85 318 with roller cam #302 heads had the moly rings stock.

they do well on bore wear and tappor,MY 300,00 mile 88 is still in specs for a rering with used pistons.

i will slap a set of stock cast rings in wafter a dingle ball hone job to clean them up some.

if its in specs its in specs for a re-ring

i may not get another 300,00 but another 150,000 will work for the price.






Yeah with the nickle content that the blocks have had
for a number of years it isnt the block that wears





Plus the blocks that came factory with the moly rings wear the bores a lot less than the regular cast rings did. However that's not to say than an engine that came with moly rings from the factory is guaranteed to still have bores that would meet the requirements for a new set of moly rings.