12-09-2017, 04:15 PM | #1 |
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350 block number
On the rear drivers side behind the head the number reads 3970 10. I cant find this number anywhere. It looks like between the 0 and 1 there is some numbers missing. I have cleaned the block good and that is how it reads.
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12-09-2017, 04:25 PM | #2 |
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Re: 350 block number
You’re missing the zero.
The 3970010 block is a common 350 block. |
12-09-2017, 06:06 PM | #3 | ||
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Re: 350 block number
THE most common 4" bore block GM ever made.
Gary
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12-09-2017, 10:15 PM | #4 |
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Re: 350 block number
Was it common to leave out the 0 and have a space between 3979 10
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12-09-2017, 10:38 PM | #5 |
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Re: 350 block number
No, but in casting it is possible that some numbers are accidentally left off.
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12-10-2017, 08:51 AM | #6 |
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Re: 350 block number
Yep. Because it was made in a sand mold. Even with a hardening agent to hold the sand together the small numbers sometimes get obliterated.
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12-10-2017, 10:25 AM | #7 |
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Re: 350 block number
Ok that is what I wanted to know. Just making sure I did not have some rare block.
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12-10-2017, 02:28 PM | #8 |
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Re: 350 block number
Nope. Good block, but not rare. Commonly referred to as an "oh one oh".
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12-10-2017, 06:56 PM | #9 |
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Re: 350 block number
Ok did some checking today and number seven cylinder has a lot of taper. I checked the top with the ring installed and there was about 55 thousandth between the ring gap and at the bottom the gap was about 35 thousandth. This appears to be the worst cylinder as the other on I check was not that bad. How do the wrist pins install in the pistons. Are they heated and pressed or is there a snap ring? The engine is a 1970
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12-10-2017, 09:20 PM | #10 |
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Re: 350 block number
Pressed in.
Jimmy
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12-11-2017, 08:20 PM | #11 | |
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Re: 350 block number
Quote:
Local machine shop told me they would press the wrist pins in the new pistons for about $7 each.
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68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive... |
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