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Old Aug 7, 2007 | 07:06 AM
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Default 60 over bore

I am looking to buy a block. The owner says if you bore it 60 over it will clean up. This sounds like alot to me.

Can someone let me know what you think about that and advise other questions I should ask? In other words what makes a block junk vs. serviceable? I know cracking and warping can be issues.

I don't have access to the block, only a couple of pictures.
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Old Aug 7, 2007 | 07:40 AM
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.060 over on a big block is fine, I wouldn't run a smallblock at that dimension. Cylinder walls are thin which equates to poor ring seal and overheating issues. There are plenty of blocks available that are standard and will clean up at .030 over. IMHO, keep looking (if it's a smallblock)
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Old Aug 7, 2007 | 07:44 AM
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On a small block for street use, I see no problem with 60 over. Some people say they will run hot, but if the cooling system is working like it should I don't think they do. Just my 2 cents.
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Old Aug 7, 2007 | 07:55 AM
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too much on a small block. you can get a decent roller block that'll clean up at .030 for cheap ($150.00 around here). they're too abundant to mess with .060 imo.
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Old Aug 7, 2007 | 08:02 AM
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Originally Posted by AWilson
I am looking to buy a block. The owner says if you bore it 60 over it will clean up. This sounds like alot to me.

Can someone let me know what you think about that and advise other questions I should ask? In other words what makes a block junk vs. serviceable? I know cracking and warping can be issues.

I don't have access to the block, only a couple of pictures.
Did you ever take a look at the two early blocks on ebay.I think they will work at .030......I know one ends today.
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Old Aug 7, 2007 | 08:17 AM
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avalonjohn

Thats why I am asking. I e-mailed the guy who's auction is ending in 6 hours. He said that boring to .60 over will clean it up. Thats what concerns me. He could just be throwing a number out there, or he could be minimizing a bigger problem. Not sure what to do.

Whats a normal price for SB std. bore blocks?
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Old Aug 7, 2007 | 09:23 AM
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Originally Posted by AWilson
avalonjohn

Thats why I am asking. I e-mailed the guy who's auction is ending in 6 hours. He said that boring to .60 over will clean it up. Thats what concerns me. He could just be throwing a number out there, or he could be minimizing a bigger problem. Not sure what to do.

Whats a normal price for SB std. bore blocks?
put it this way......i paid a heck of alot more than that for one from engines limited, but if i knew then what i know now, i would have kept looking..... if the bore is standard, i don't understand why it needs .060 over.....the one i had even had a ridge and it did fine at .030. call the guy and ask why it needs to go .060, otherwise, remember, there is that other one on there w/ the sept 6th date code, 4 weeks before the build of your car...that's nice too, let us know, good luck, john
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Old Aug 7, 2007 | 10:31 AM
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Thanks guys! I'll do the best I can.
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Old Aug 7, 2007 | 10:59 AM
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Originally Posted by AWilson
Thanks guys! I'll do the best I can.
hey, i emailed the guy for you to find out why it needed 60 over, he said 30 over is fine......i get it confirmed, good luck john
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Old Aug 7, 2007 | 04:55 PM
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come to my house and I will sell you one for 150 bucks.Its already striped down,ready for a rebuild. My wife is making noises already about how the garage looks. chuckle. I will throw in the tourquer 2 mainfold and the "194" double hump heads (jan.25th and feb 24th I think ,1965 dated). Dont know what the block is dated..its already been bored 30 over.(350 ci)
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Old Aug 7, 2007 | 05:07 PM
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You can bore a sb .060 over as long as the cylinder castings aren't porous. I agree with the other posters though, I would keep looking if it really does need 060. Now the seller is apparently changing his mind to say 030 will do. That scares me when the story changes. Especially on fleabay! There are enough blocks around that plenty of sailors out here in California are using them as mooring anchors at Catalina Island!
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Old Aug 7, 2007 | 05:20 PM
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Originally Posted by ghoastrider1
come to my house and I will sell you one for 150 bucks.Its already striped down,ready for a rebuild. My wife is making noises already about how the garage looks. chuckle. I will throw in the tourquer 2 mainfold and the "194" double hump heads (jan.25th and feb 24th I think ,1965 dated). Dont know what the block is dated..its already been bored 30 over.(350 ci)
Sorry Ghostrider. Those are not the dates I am looking for.
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Old Aug 7, 2007 | 05:23 PM
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Default Another option - Engines Unlimited

Anyone ever use Engines limited? They seem expensive but might also have what I need. He is confirming a H27 or August 2 67. I can't believe my luck. Maybe it isn't luck. maybe these are more plentiful than I think. Anyhow I guess since I would have the opportunity to see it before I buy and it's not a E-bay thing I should have a much better understanding of what I am getting. If I only knew what to look for.

This brings up another question. What the heck are these worth? Whats a fair price?
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Old Aug 7, 2007 | 11:11 PM
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Convince me that .060 is too much for a small block, I'm all ears. My current sbc engine in my 79 vette is bored .060 and have not had any heating issues or any other. 060 being too much for a smallblock sounds just as silly as the carb is too big arguement.
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Old Aug 8, 2007 | 06:24 AM
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what date code you are looking for
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Old Aug 8, 2007 | 06:29 AM
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Originally Posted by AWilson
Anyone ever use Engines limited? They seem expensive but might also have what I need. He is confirming a H27 or August 2 67. I can't believe my luck. Maybe it isn't luck. maybe these are more plentiful than I think. Anyhow I guess since I would have the opportunity to see it before I buy and it's not a E-bay thing I should have a much better understanding of what I am getting. If I only knew what to look for.

This brings up another question. What the heck are these worth? Whats a fair price?
As I said, I got one from Randy at Engines Limited. You will pay top $ for it, but you will get a good block, guaranteed to be ok. Most of these companies want............let me guess.......$750 for the block! Depends what you want. If you want it now anve the $$$ to spend, why not. If you are not in a rush......wait and keep looking.

FYI, the guy on EBAY with the Sept 6th block (still active listing) said it need to go .060 due to some pitting, but the other one in mid sept 67 was certain his would need .030.......which one did you contact?? the mid sept ended, but you still may be able to contact him, he only wanted $150. Ebay blows and I hate making expensive purchases, holding my breath till they get to my house, however, Randy is good, just really pricey.....could be one of those "you get what yo pay for "deals....good luck
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Old Aug 8, 2007 | 06:33 AM
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Originally Posted by AWilson

He could just be throwing a number out there, or he could be minimizing a bigger problem. Not sure what to do.
He doesn't know what overbore will clean it up, and the purchase is a roll of the dice for you. You can't just look at a bore and tell what amount will clean it up if the cylinder bore is scored, huge wear ridge at the top, or rust in the bore. Can't tell for sure by just looking at it...you gotta start the boring or honeing process to determine the depth of damage.
Keep in mind...after .060 over, that 350 block is done.
Walk away...PLEASE!!!
Eddie
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Old Aug 8, 2007 | 08:02 AM
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I agree I should stay away from the .60 over. I agree most of the time you can't tell how much you will have to cut to clean it up,,,,unless it is really obviously scored. Just the fact that he mentions and takes a picture of the #8 cylinder is a flag.
I contacted the other guy and told him I would wait a week before contacting him again. My guess is since there were no bids it will still be there. In the mean time I contacted Engines Limited. They say they think they might have something for me dated early August 67 which falls in line with the early October build date of my car. Will know in a couple of days. Also they are 3 hours from me so I can see before buying. But definitely is expensive. Will have to really look at all the expenses of a E-bay purchase and the risk factors to decide.

Who knows, might end up with nothing this time next week!!!
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Old Aug 8, 2007 | 08:05 AM
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Originally Posted by donnietcb
what date code you are looking for
Car build date is 10/4/67

Looking for cast date of approximately July, August, early September 67.
I believe that is the right range.
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Old Aug 8, 2007 | 10:08 AM
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Originally Posted by AWilson
I agree I should stay away from the .60 over. I agree most of the time you can't tell how much you will have to cut to clean it up,,,,unless it is really obviously scored. Just the fact that he mentions and takes a picture of the #8 cylinder is a flag.
I contacted the other guy and told him I would wait a week before contacting him again. My guess is since there were no bids it will still be there. In the mean time I contacted Engines Limited. They say they think they might have something for me dated early August 67 which falls in line with the early October build date of my car. Will know in a couple of days. Also they are 3 hours from me so I can see before buying. But definitely is expensive. Will have to really look at all the expenses of a E-bay purchase and the risk factors to decide.

Who knows, might end up with nothing this time next week!!!
What's Randy want for a block these days?
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