Original block damaged. Welding possible? - Team Camaro Tech
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post #1 of 8 (permalink) Old Dec 27th, 04, 11:40 AM Thread Starter
 
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I just purchased a 67 rs/ss with the original 350 motor. To make a long story short I have found 3 of the mains with trashed bearings, a steel crank that is beyond repair and worse of all damaged to the mains on the block. My question is this...Since this is the original motor is there any way that this block can be saved? Can the mains be welded and machined again?

Dave
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post #2 of 8 (permalink) Old Dec 27th, 04, 11:45 AM
 
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They won't clean up with a line hone job??

And yes, there are Welding Shops that can furnace weld cast-iron and I would look for one under "Diesel Head Crack Repair Service" b/c they will have the knowledge AND experience to do it right IF they are really into doing this type of repair!!

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post #3 of 8 (permalink) Old Dec 27th, 04, 12:02 PM
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On most blocks that come in the shop in that condition in most cases its the main caps that take it the worst. We usally install new caps line bore and line hone and some times you may still see some referance marks in the block which will not hurt nothing. JMO

Some times when welding has been done they can't be machined afterwards do to the weld brings all the carbon to the top.
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post #4 of 8 (permalink) Old Dec 27th, 04, 01:09 PM
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As pdq67 stated, find a welding place to furnace weld cast iron. The talent is what you are paying for. My uncle and cousin did cast iron repair, ie., cylinder head repair, and later did alot of farm implement dealers' transmission cases and engine block repair in the Midwest.

Another alternative is to give Callies Performance, Fostoria, OH a call and see if they market, or know another, who sells oversized (OD)bearing shells for the block. Then have the block line-bored to match the larger shells. You could probably even get the ID reduced for the OE steel crank to keep it.

Or get SBC 350 bearing spacers for a 400 CID block. This would require boring the mains for SBC 400 CID bearing OD.

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post #5 of 8 (permalink) Old Dec 27th, 04, 02:56 PM
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Dave,
Everyone is speculating without looking at the block. It is pretty rare for a block to be so "messed up" that an align bore or hone will not repair it. 396 cranks are pretty plentiful, at least in this area. I think your first stop should be your machine shop ... they should be able to look at the block and tell you what is needed to repair it.

Bill Koustenis
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Advanced Automotive Machine
Waldorf Md
1971 Chevelle "Heavy Chevy" original owner


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post #6 of 8 (permalink) Old Dec 27th, 04, 03:25 PM
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Bill,
I think he is working with a 350, not 396.

Dave,
If you want/need a new never turned forged GM crank (350) e-mail me.

Royce (NO XQSSS) Bradley

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post #7 of 8 (permalink) Old Dec 27th, 04, 04:21 PM Thread Starter
 
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Thanks for the quick replies and advice. If it would help I can email or post a couple of pictures of the block in question on my website, in a day or two for better judgement.
I'd really like to save this block because it is the original but if not I'll have a good excuse to stuff a 427 inside it.
FWIW: The 67 on my site is the old 396 car that I sold last year. I haven't taken any pictures of the new one yet.

Dave.
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post #8 of 8 (permalink) Old Dec 27th, 04, 05:17 PM
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ya it is always awesome if you can have that original engine in there...more value and just plain cool

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