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Identifying engine??

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Old Jan 15, 2011 | 10:46 PM
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Default Identifying engine??

My friend knows a guy who has an engine he says was out of a 65 Vette. The casting number on the back of the block reads 3892657. The heads read 51239 F0035HE. My info comes up with 65 327-300 heads on a '67 engine...he says the engine was never apart and the heads belong to it.
Can anyone identify this engine?
Thanks
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Old Jan 15, 2011 | 10:59 PM
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It's a 67 block given the number. HE is 4 speed and 4bbl according to my book.
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Old Jan 15, 2011 | 11:07 PM
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In 65 HE is a 250 HP. HF is 300. In 67 HE was 300 HP was the Flint designation would have been a V. Block is definitely 67. Where is the 51239 located?
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Old Jan 15, 2011 | 11:11 PM
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what are the dates of the block and heads
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Old Jan 16, 2011 | 12:02 PM
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Originally Posted by 5thvet
In 65 HE is a 250 HP. HF is 300. In 67 HE was 300 HP was the Flint designation would have been a V. Block is definitely 67. Where is the 51239 located?
Looking at the engine head-on, 51239 F0035 HE reads left to right on the passenger side pad in front of the head.
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Old Jan 16, 2011 | 12:30 PM
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Originally Posted by joseph p
Looking at the engine head-on, 51239 F0035 HE reads left to right on the passenger side pad in front of the head.
Either you're mis-reading the F0035HE, or it's a bogus stamping; the two digits after the "F" can't both be zeros. Also, the "51239" is missing two digits - it has to be a 7-digit number. What's the casting date on the rear block flange, about 6" toward the passenger side from the distributor?

The 3892657 block was never used in a '65 Corvette; it was only used in '67 in Corvettes, although it had many usages in passenger cars and trucks from '64-'67.

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Old Jan 16, 2011 | 01:29 PM
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You're right I could be misreading it, I'll look again. Also should the extra 2 digits be after the 51239?
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Old Jan 16, 2011 | 01:41 PM
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Originally Posted by joseph p
You're right I could be misreading it, I'll look again. Also should the extra 2 digits be after the 51239?
The first number should be a 5 standing for 65 followed by a 1 which is a filler number starting the production number sequence. The next 5 numbers would be the end of your serial number ( production number like 12345.)
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Old Jan 16, 2011 | 03:35 PM
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OK...I screwed up, the first group is: 512395 then a space. I cleaned it, soaked it, brushed it, but could not even get a ghost of another letter on the bare metal. The second part is: F0305HE
Does that make anything clearer?
Thanks for your help.
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Old Jan 16, 2011 | 04:40 PM
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Originally Posted by joseph p
OK...I screwed up, the first group is: 512395 then a space. I cleaned it, soaked it, brushed it, but could not even get a ghost of another letter on the bare metal. The second part is: F0305HE
Does that make anything clearer?
Thanks for your help.
I would say this is a 65 250 hp, manual trans 327 out of Corvette VIN 12395.
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Old Jan 16, 2011 | 04:57 PM
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You are still missing a number on the 512395 number. Should be 51 followed by 5 numbers.
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Old Jan 16, 2011 | 05:25 PM
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Cannot get any other numbers off it...Would you say it is a definite 1965 from what I can give you?
What is the difference between a 250 and a 300 besides the carbs?
Thanks again.
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Old Jan 16, 2011 | 05:33 PM
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Originally Posted by 5thvet
You are still missing a number on the 512395 number. Should be 51 followed by 5 numbers.
This could be a factory anomaly on the VIN stamp. They are rare, but they do happen.

Anyway that the original poster can post pictures of this engine pad?

Last edited by emccomas; Jan 16, 2011 at 05:41 PM.
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Old Jan 16, 2011 | 05:35 PM
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I can get a pic...not sure I know how to post it.
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Old Jan 16, 2011 | 06:04 PM
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Originally Posted by joseph p
Cannot get any other numbers off it...Would you say it is a definite 1965 from what I can give you?
What is the difference between a 250 and a 300 besides the carbs?
Thanks again.
If the engine is stock one easy visible difference is the fuel filter on the 250 HP is internal ( in carb) and on the 300 HP is in in-line between the fuel pump and carb.
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Old Jan 16, 2011 | 06:12 PM
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Originally Posted by 5thvet
If the engine is stock one easy visible difference is the fuel filter on the 250 HP is internal ( in carb) and on the 300 HP is in in-line between the fuel pump and carb.
No I mean...what gives it the 50 extra hp?
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Old Jan 16, 2011 | 06:33 PM
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Originally Posted by joseph p
No I mean...what gives it the 50 extra hp?
AFB on the 300 vs WCFB on the 250, different intakes 3844457 for the 250, 3844459-300, 2" exhaust on the 250 vs 2 1/2" on the 300 ( if manual trans).

Don
PS. If you email one of us a pic of the numbers on the pad, we can post.

Last edited by 5thvet; Jan 16, 2011 at 06:41 PM.
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Old Jan 16, 2011 | 06:55 PM
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Originally Posted by joseph p
I can get a pic...not sure I know how to post it.
Follow these directions...

http://forums.corvetteforum.com/c1-a...sual-aids.html
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Old Jan 16, 2011 | 07:06 PM
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Old Jan 16, 2011 | 07:15 PM
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[QUOTE=5thvet;1576530078]AFB on the 300 vs WCFB on the 250, different intakes 3844457 for the 250, 3844459-300, 2" exhaust on the 250 vs 2 1/2" on the 300 ( if manual trans).

I thought 1965 250 heads were different from those earlier. What size were the valves pre 65 as opposed to 65s?
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