honing
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Freshman User
Joined: Mar 2019
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Ah I see well good deal I appreciate the help so far. Is there anything you would suggest with those cylinder walls I’d running the dinggle berry will work? Or if there are any other things I need to check for?
Post Fiend
Joined: Apr 2002
Posts: 19,311
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From: Waterloo, Iowa
Still.. cylinders don't look great .. Even then, while it might not be perfect seal it should run a hell of a lot better with fresh rings. Check cylinder taper, if it's not too bad it should work OK.
Millions of engines were repaired this way over the years. Polish the crank, new bearings, maybe lap the valves & fresh valve springs...
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Cargo Master
Joined: Jul 2010
Posts: 2,099
Likes: 8
From: York, Pa
Honing isn’t going to take those lines out. If you scrape the carbon away at the top you’ll most likely feel a ridge the way they look. I’ve seen valleys look like that doesn’t hurt anything.
If you get a a 390 rotating assembly make sure you get car pistons not truck pistons unless you want them down in the hole like your 360. You can use rv cam with stock type stuff they’re not that special.
If you get a a 390 rotating assembly make sure you get car pistons not truck pistons unless you want them down in the hole like your 360. You can use rv cam with stock type stuff they’re not that special.
Cargo Master
Joined: Jun 2015
Posts: 2,240
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Originally Posted by williams242
I also noticed it looks like part of the casting Brock in the top of the picture. Any one else seen this? That mean the block is trashed?
Laughing Gas
Joined: Feb 2011
Posts: 996
Likes: 318
For the cylinders: You need to either borrow a set of bore gauges or find someone who can measure them for you. Need to measure not just for diameter but concentricity top to bottom. Once you are armed with the data for each cylinder, it can be compared to the limit specifications for the engine then you can move forward with a plan. The measurements will dictate how you proceed and possibly save you from wasting money. Sure you can guess and I've done that when I didn't know any better and there were no forums or internet to look stuff up but there is no need to do that now.
Cargo Master
Joined: Jun 2014
Posts: 2,217
Likes: 325
From: Central Florida
If you go that route by sourcing a Scat reciprocating assembly, you could go much further (4.25" stroke) and have 445+ CID. However, you should have your machinist look at everything and report back to you before making any decisions. He'll tell you whether the crank can be turned down or not, what the bore is and whether it can be enlarged (0.060" is the practical max for an FE). Finally, have him check the block (sonic, magnaflux, etc.) for any cracks or other faults. These data points will support your decisions on how to proceed.
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