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Canadian Poncho Homepage -> Canadian Poncho -> Beaumont Power Train Tech Forum -> Decode this 327 please!
Post Info TOPIC: Decode this 327 please!
beaumontguru


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Decode this 327 please!
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any idea what this 327 is?
Is it a large or small journal

V1012HF

Someone out there should be able to decode this

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67Poncho


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V  Flint (Engine) October 12 


HF1965327h/p3004Vette
HF1966327Powerglide, A.I.R.2754full size



CLICK HERE.........



-- Edited by 67Poncho on Saturday 27th of November 2010 06:08:36 PM

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Beaumont4008


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Need to know the block casting number to be sure. My chevy by numbers book shows the HF suffix code for years 65,66,67 and 68.  68 would be the large journal as last year for small journal is 67.

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beaumontguru


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Problem is that when i checked the nastyZ28 website,
HF could also be a 1969 350.

So do any of the other numbers in that code tell anything else?

Or will i be forced to get the #s off the back of the block, and the casting date.

This will make a big difference as a 69 is a large journal and worthless

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Beaumontguru

MY BEAUMONT HAS 4 STUDDED TIRES AND 2 BLOCKHEATERS......AND LOTS OF OIL UNDERNEATH.  The other one has a longer roof.
Beaumont4008


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The other numbers are just plant code and month and day of month but not year.


Just checked and your correct that also shows as a 69 350 code.

-- Edited by Beaumont4008 on Saturday 27th of November 2010 06:45:22 PM

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kelico


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your forced to look at the casting numbers.. and get a little greasy...
I know the feeling..
I took my digital camera and poked it over the back of the block and shot a photo when I didnt want to crawl across the fender, or the engine (or couldnt) then shot it and checked until I could actually read it. the one I tried to look at had a hood that was so rusted, I could only open it enough to jam my arm in and shoot the photo.





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65sssd


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This also a good site. I don't know how to make it a link.
http://www.chevy-camaro.com/chevy-camaro-chevy-engine-suffix-codes.asp?group=11

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kelico


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http://www.chevy-camaro.com/chevy-camaro-chevy-engine-suffix-codes.asp?group=11








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65sssd


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kelico wrote:

http://www.chevy-camaro.com/chevy-camaro-chevy-engine-suffix-codes.asp?group=11





How did you make it a link Kelly?

 



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4SPEED427


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Dave, you can also tell by looking at the front of the block. The front intake seal (to the block) is a different shape on a 65 327 than it is on a 69 350. I don't have pictures right now but if I get a chance later today I can look for them.

Look at the last picture on page 1 at the bottom of this thread.

http://canadianponcho.activeboard.com/forum.spark?aBID=118110&p=3&topicID=24491380&page=1


See the circular opening at the front of the block on my small journal 327 where the intake seal is? I think all small journal 327's except 67 look like this. A 350 would never look like this.

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beaumontguru


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i think this one is a large journal 68 or 69, but it has camels on it
The long water pump has been added later, and i think it is a collection of different eras, the intake is 1968 for sure, but there is no accessory holes in the heads, so they are pre-68 for sure.

thanks carl for the tip on hte oil fill area on early blocks.
does not look like it in this pic

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Beaumontguru

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4SPEED427


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Those can still be 68 heads (hump, no bolt holes). Some of what I see on that engine says 68 to me, except for the alternator bracket which is clearly 69 and up.

-- Edited by Carl Stevenson on Sunday 28th of November 2010 01:48:35 PM

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4SPEED427


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This thread has some block pictures.

http://www.stevesnovasite.com/forums/showthread.php?t=139712&highlight=327+small+jounal

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beaumontguru


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In that case maybe the whole thing is 68,  i thought 68 had to have accessory bolt holes.

The twist oil cap is a dead giveaway that it is 68.

Too bad, that makes it a large journal, i think?

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Beaumontguru

MY BEAUMONT HAS 4 STUDDED TIRES AND 2 BLOCKHEATERS......AND LOTS OF OIL UNDERNEATH.  The other one has a longer roof.
4SPEED427


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Yes, correct about the 68 large journal.

Some people say early 68 cars used up the left over 67 small journal engines.

I say 'Show me the proof". There's been lots of claims but I have yet to see a numbers match 68 small journal 327 anything!

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ak 67sd


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Just wondering Dave, why do you want small journal? is it worth more? would have a steel crank i suppose... but i would think the large journal (although as common as belly buttons) would be a better foundation for a build...

ak

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4SPEED427


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ak 67sd wrote:

Just wondering Dave, why do you want small journal? is it worth more? would have a steel crank i suppose... but i would think the large journal (although as common as belly buttons) would be a better foundation for a build...

ak


Hey, what do you have against small journal cranks? I take that personally!!!!!wink

Seriously though, why do you say that AK? Because bearings are easier to get? That is really all the difference.

 



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1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
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Beaumont4008


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You could put the crank in a 4 bolt main 350  block. The large journal 327 crank was available as a forge crank also. Mostly in trucks and the High performance aplications.  Or you could make a large journal 68 L79 engine as used in 68 chevelles.


-- Edited by Beaumont4008 on Monday 29th of November 2010 01:02:12 PM

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ak 67sd


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Carl Stevenson wrote:

ak 67sd wrote:

Just wondering Dave, why do you want small journal? is it worth more? would have a steel crank i suppose... but i would think the large journal (although as common as belly buttons) would be a better foundation for a build...

ak


Hey, what do you have against small journal cranks? I take that personally!!!!!wink

Seriously though, why do you say that AK? Because bearings are easier to get? That is really all the difference.

 


Carl, sorry to hear about your small journal! biggrin 
Just wondering because Dave indicated that he'd be disappointed if its a large journal and it'd be worthless...(in his post)... No matter to me, just wondering and trying to learn why the preference, you could always use thicker bearings on a small journal crank in a large journal block. I suppose it would depend on intended use...
-small journal crank is better than large journal if you are spinning it higher than 7000rpm
-small journal come with steel cranks (i think they all do?)
-large journal 327 steel cranks are super rare
-small journal rods are heavier (not good) than large journal
-large journal block allows you to go 383ci etc.etc. -more CI=more HP

 



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67Poncho


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Beaumont4008 wrote:

You could put the crank in a 4 bolt main 350  block. The large journal 327 crank was available as a forge crank also. Mostly in trucks and the High performance aplications.  Or you could make a large journal 68 L79 engine as used in 68 chevelles.

 I did that years back as well...... But I believe I put a 307 crank in a 350 to make a large journal 327. (I think that is how I did it)

 



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4SPEED427


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67Poncho wrote:

 

Beaumont4008 wrote:

You could put the crank in a 4 bolt main 350  block. The large journal 327 crank was available as a forge crank also. Mostly in trucks and the High performance aplications.  Or you could make a large journal 68 L79 engine as used in 68 chevelles.

I did that years back as well...... But I believe I put a 307 crank in a 350 to make a large journal 327. (I think that is how I did it)

 

 


Yes, same crankshaft.

 



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