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Thanks! I'll measure it tomorrow and see what I have. The bores look really clean and I wouldn't have torn it down but I plan on doing junkyard magnum heads and a better cam so I figured why not. o btw, are you still doing any magazine stuff?

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Although I usually agree with you dulcich and have used several of your articles as references but I disagree here. .001 or there about you can get by with a hone but much more than that and you are asking for trouble. Seen it too many times over the years and I am as low buck as anybody. In act any ridge that you can catch a finger nail on should be removed before piston removal if you plan to reuse the pistons to prevent ring land damage from rings catching on the ridge on removal. seen this happen many times.
Depends on if - Do you feel lucky today?

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I'd much rather have a new bored out block too, but those numbers are for the guy that just cant afford any other option. Once knew a kid who re-ringed a Ford 390 with .013 taper in bores, and used chrome rings! Needless to say that one was a failure. I did a 215 olds for my 46 Willys Jeep in high school with .006 (best) to .008 (worst) knurled stock pistons, cast iron rings. Ran about 15 years on that build till the block froze one winter and cracked.
-dulcich

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Here is the real deal.
.001-.003 will run like a new engine.

.004-.007 can be re-ring and run great for a while

.008-.010 will blowby some, but run good for 20,000 miles

.011-.013+ will make you wish you bit the bullet and bored and bought new pistons

Have the taper measured from the top of the bore (top ring travel) where you will find the most wear to the bottom where there will be zero wear.

You won't break rings as some suggest. Just hone and re-ring.

If the bores are good enough to hone and re-ring, use a moly ring when you rebuild it.

Back in the day (1970's and '80's) I built a lot of re-ringed engines for my own use and low-buck guys, and this is my take from seeing the results.
-dulcich

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If the ridge is under .005", I don't even bother to ridge ream it on a driver. Hone it, dump rings in it, and let it rip!

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So lets say the taper is .004..

The controversy seems to be the ridge, so why not use a ridge reamer to remove the ridge and then hone???

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BINGO
The reamer should be used BEFORE piston removal to avoid damage from rings catching on the ridge. If you can feel a ridge it can catch a ring and it don't take much to break a ring land. If you aren't reusing the pistons it isn't a big deal but still.