Here is a quote from e-bay motors of a 69 442 convertible for sale.

"HERE ARE SOME PHOTOS, THE MATCHING BLOCK IS "G', HEADS ARE "C" AND THE MANIFOLD IS "J". BLOCK HAS A NICE CRACK WHICH IM TOLD CAN BE REPAIRED. "

Does anyone have any experience repairing origional cracked blocks?

Photos are here.

http://cgi.ebay.com/ebaymotors/Oldsmobile-442-1969-OLDSMOBILE-442-CONVERTABLE-HEAD-TURNER-NO-RESERVE_W0QQitemZ260344025904QQcmdZViewItemQQptZUS _Cars_Trucks?hash=item260344025904&_trksid=p4506.c 0.m245&_trkparms=65%3A3%7C39%3A1%7C240%3A1318

 

First you disassemble, clean and pressure check. If there is one crack there may be more. You drill holes at the ends of the crack which will prevent the crack from growing.
You can arc or gas weld with a nickle rod. Gas welding can be spendy .

 

nice crack...



Nice car, I'll watch the action ...

 

Wow, that's a really ugly crack!!! I have a similar problem with my 69 442. The original 400 has a hairline crack in the water jacket behind the starter. It is much smaller than the one pictured there. Hairline cracks in non-structural areas can be repaired fairly easily. Here locally there is a welder who has been repairing cast iron farm equipment for decades. I've had him repair the cast iron base on my drill press, and there have been no problems for five years. You need to find someone with that sort of experience.

Getting back to the car in the pictures, that crack may be more trouble than it's worth. It's hard to tell from the pictures, but it appears that the ice also deformed the outer shell of the water jacket. There may be other damage as well. If the issue is just a sealing weld so the water jacket holds coolant, you may be able to have it repaired.

 

I have seen it done just the way mugsz described it...

but that was a much smaller crack

I found this on the web maybe it helps

http://www.lincolnelectric.com/knowl...ronpreheat.asp

that said, even a repaired olds block has got to be better then having a buick in there LOL....

 

I would throw it in the gutter and go buy another...

 

And then restamp it to make it a matching ### car?

 

in thinking was everything else in the block ok? it maybe that there are more problems? I personally think the crack can be repaired, and I am no "rocket" scientist, I would get a replacement block, and keep this one off to the side crated, in case i wanted to sell it put the original heads etc etc etc on the replacement block. things happen, a crack like this could it could of happened in 1969, and if someone replaced the block with a block purchased from oldsmobile would it be less correct? I do remember something about replacement blocks having serial numbers of their own.

but I do not think anyone would fault you, I have been following the barrett jackson auctions on the speed channel and have seen quite a few restorations with correct dated parts but not numbers matching, and if it hurt the values it was hard to say, as the prices I saw were astronomical!

a 1969 w-30 went for over 100K!!!!

 

No wonder that one is missing from my 69 stable.

 

I wondent take the risk of putting a re-paired block back in the car,u can repair it, keep it- and if you sell the car include it w/ the sell but I wouldnt put it back in car.

Diff keep it, you wouldnt be able to even use a cracked block as a trade in core...

You still can have matching numbers car if you get the same year block just not correct " original" matching number car.


I hope this helps and good luck..

 

No, you cannot. The numbers that "match" are the VIN derivative. Simply having a "correct" casting number and even a close date code is NOT "numbers matching". The fact that the VIN derivative stamped on the block and trans actually MATCH the VIN of the car is why it is called "numbers matching"

 

check where the distributor is

 

Yeah, he says that in the ad.

 

The distributor and valve covers say Buick to me

How did he modify a 1970 hood for the 1969 hood latch? Nice looking car, but I'd want to see it in person before bidding on it.

 

I looked at the valve covers quick and thought Pontiac so I asked the question.

 

Nothing a little JB Weld can't fix.

Norm

 

That crack is pretty bad. You could probably find another engine more easily than having that repaired.

 

That certainly was my impression of what "Matching numbers" means.

 

MN71W30 and I were commenting on the "rebuilt but not original 455" that's in the car right now. We don't think it's an Oldsmobile engine... and the seller is just identifying it as a rebuilt 455. Shouldn't he point out that the car has a Buick or Pontiac engine in it right now??? If that's not an important detail to the seller, what else is "out of place" that's not being mentioned? I can see the 4 spoke sport wheel, and the rear seat looks nice but the stitching is different than the bucket seats. Yeah, nice car but I'd want to crawl over it real good to see what is and what is not correct for a 1969 442.

 

A detail like a Buick 455 not in the listing shows me he isn't real open and honest.
I looked at a 69 442 conv locally listed last year on ebay and I could not believe what a pile it was.
beware!!

 

I thought he mentioned in the add that it's a Buick.[ actually someone asked and he said so in the Q&A at the bottom]

Other than that

70 hood [but worth a small fortune]
70 4 spoke [not 69 steering wheel]
funcky back seats
wrong color wheels for 69
Chebbie trunk stipes