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RE: New member, help identifying engine


Thanks Longstroke, I haven't spoken to a machinist yet, but I'm wondering if they can even sleeve a 'siamese' cylinder, being so close. I will price it out regardless.

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Guru

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Heres a 235 engine. 

 

https://www.facebook.com/marketplace/item/179948866779849/

 

Paul



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Quick update for everyone here, local machine shop estimated $300 per cylinder to sleeve. Since I would need two, I will be scrapping this block. In other news, I have a line on another Poncho ;)

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Canadian Poncho Superstar!

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Goach2 wrote:

Quick update for everyone here, local machine shop estimated $300 per cylinder to sleeve. Since I would need two, I will be scrapping this block. In other news, I have a line on another Poncho ;)


 I agree, it would not be worth the money. Let us know how things go with a new motor. 



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1957 Pontiac Pathfinder Deluxe sedan restored 261 six

1974 Chevrolet Caprice Estate wagon low mileage original 400 V-8



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Ok, engine I'm looking at has a 3769717 block, which puts it at '58-'62, however the head is a 3836848. I've read that GM Canada drilled out these heads and put them on the 261's, but that's not what 73SC's table showed. Anyone have any experience with these two numbers together? I just don't want to end up with two broken block here ;)

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Canadian Poncho Superstar!

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Goach2 wrote:

Ok, engine I'm looking at has a 3769717 block, which puts it at '58-'62, however the head is a 3836848. I've read that GM Canada drilled out these heads and put them on the 261's, but that's not what 73SC's table showed. Anyone have any experience with these two numbers together? I just don't want to end up with two broken block here ;)


 Joel, that cylinder head number that you indicated is a 1956-1962 235 Chevrolet number (3836848). These heads would not have the "steam holes" like a 261 head would have. 



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1957 Pontiac Pathfinder Deluxe sedan restored 261 six

1974 Chevrolet Caprice Estate wagon low mileage original 400 V-8



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Well, I went and did it again. Picked this one up about 1.45 hours away from me...

photos.app.goo.gl/1QxQ6xxYJ4w1tnHcA

Here's the details:

Engine ID: W9204502 - GM documentation says it is from a 1960 Canadian Pontiac, apparently it came out of a 1959 Pontiac.
Block: 3769717 - 261 for sure
Head: 3836848 - Yes, I know, 235 head just like the last one, but this one has higher compression!

This one turns over, so I'm thinking put the starter on it and crank to measure compression? I'm looking for a good resource (have manual) for rebuilding one of these. I've not done anything larger than a small engine and I don't feel confident in measuring clearances and sizing things properly. Not sure if I need to get into the bottom end too much to 'refresh' it? Or if a gasket kit and cleaning is enough? Thanks!

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Here's a good find, pulled the head off and this is what I found:
photos.app.goo.gl/ySWrkvmxSugAiU5g9

Pretty plugged up, is that normal? Or maybe someone used the wrong head gasket?

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Member

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Just trying to identify the parts I have. For the cam, it's casting is 3836127. From Google, this appears to be a solid lifter 235/261 cam. Is this the one that was mentioned to be from a Corvette of that vintage?

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