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Remember back in the day you could do the finger fit on the front of the block and tell if it was 283 or 327. Any one remember that?
 

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????????

Please explain.
There is a "wing" looking thingy above the front cover that sticks out of the block. On a 283 you can't lay your finger in the indentation, on a 327 you can. Hard to explain but easy to see if you know the difference. Easy tell back in the day

:anim_25:
 

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Discussion Starter · #5 ·
I like you description, made me laugh. But that is exactly what I am talking about, seems very few folks know of that, but it works every time.
There is a "wing" looking thingy above the front cover that sticks out of the block. On a 283 you can't lay your finger in the indentation, on a 327 you can. Hard to explain but easy to see if you know the difference. Easy tell back in the day

:anim_25:
 

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I've never heard of this ID method. Can you post a couple photos showing the difference?
 

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Almost.

There is a "wing" looking thingy above the front cover that sticks out of the block. On a 283 you can't lay your finger in the indentation, on a 327 you can. Hard to explain but easy to see if you know the difference. Easy tell back in the day
Angs you are on track but you have it backward. :shakehands:

We are talking pre '68 SBC 283 or 327.

The finger slot in the block at the upper left (as viewed from the front of the car) is wider on the 283, and thinner on the 327. A 7/16" drill will fit into the 283's slot, but not the 327. Shown first below is a 1957 283. Also the right sidewall of the slot, call it the blade or wing, is wider on the 283, and thinner on the 327.

'57 283 Wide slot, wide blade/wing.

http://www.trifive.com/forums/picture.php?albumid=3248&pictureid=37646
http://www.trifive.com/forums/picture.php?albumid=3248&pictureid=37647

'66 327 Thin slot, thin blade/wing.

http://www.trifive.com/forums/picture.php?albumid=3248&pictureid=37648

:beer:
 

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Discussion Starter · #10 · (Edited)
You are right on. I never fully understood why this was so, I guess something about the casting. Or is that part of the plan to be able to identify those engines? I know I used it a lot back in the day, proved a lot of guys wrong that thought they had a 327, only to turn out it was a 283. I finally started a thread about something some others didn't know.
Angs you are on track but you have it backward. :shakehands:

We are talking pre '68 SBC 283 or 327.

The finger slot in the block at the upper left (as viewed from the front of the car) is wider on the 283, and thinner on the 327. A 7/16" drill will fit into the 283's slot, but not the 327. Shown first below is a 1957 283. Also the right sidewall of the slot, call it the blade or wing, is wider on the 283, and thinner on the 327.

'57 283 Wide slot, wide blade/wing.

http://www.trifive.com/forums/picture.php?albumid=3248&pictureid=37646
http://www.trifive.com/forums/picture.php?albumid=3248&pictureid=37647

'66 327 Thin slot, thin blade/wing.

http://www.trifive.com/forums/picture.php?albumid=3248&pictureid=37648

:beer:
 

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never heard that, learn something everyday. :)
 

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1955 210 SERIES, 406 DUAL QUAD ENGINE WITH MUNCIE 4 SPEED
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I bought my car with a 327 engine. I do not have either wing. Does that mean it is a 350. Engine is coming out in a couple of weeks and being replaced with a 406. I had several people interested in the 327, however if what is said is fact then I got screwed when I bought the car.
 

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68-69 large journal.

I bought my car with a 327 engine. I do not have either wing. Does that mean it is a 350. Engine is coming out in a couple of weeks and being replaced with a 406. I had several people interested in the 327, however if what is said is fact then I got screwed when I bought the car.
Keep in mind the 327 was also produced in '68 and '69 with the large journal crankshaft. These blocks do not have the blade/wing.

A check of the block casting number will help. You may not want to pull the oil pan, but the crankshaft forging/casting number is a definitive way to tell a 327 from a 350.

BTW - the first 350 was introduced with small journals, one year only, 1967. In '68 GM standardized the SBC to large journals.
 

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1955 210 SERIES, 406 DUAL QUAD ENGINE WITH MUNCIE 4 SPEED
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Thanks that makes me feel better, mine is the 1969 version
 

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Here are a couple of photos:

The 7/16 bit 'easily' fits in the slot, which means it's indeed a 283, correct?

However, the "HC" in the ID seems to only correlate with either a 327 or a 350.

Now I'm really confused... haha





Angs you are on track but you have it backward. :shakehands:

We are talking pre '68 SBC 283 or 327.

The finger slot in the block at the upper left (as viewed from the front of the car) is wider on the 283, and thinner on the 327. A 7/16" drill will fit into the 283's slot, but not the 327. Shown first below is a 1957 283. Also the right sidewall of the slot, call it the blade or wing, is wider on the 283, and thinner on the 327.

'57 283 Wide slot, wide blade/wing.

http://www.trifive.com/forums/picture.php?albumid=3248&pictureid=37646
http://www.trifive.com/forums/picture.php?albumid=3248&pictureid=37647

'66 327 Thin slot, thin blade/wing.

http://www.trifive.com/forums/picture.php?albumid=3248&pictureid=37648

:beer:
 

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Its a new one on me but hey,learned a new one and expands this noggin. Thanks for sharing. :tu :tu :shakehands:
 

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Some would try

to run 327 blocks and claim283 inches. If you could get close enough to car it was easy to get cars disqualified. By telling them you knew his car was illegal some just left rather than be thrown out or engine torn down.
 

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to run 327 blocks and claim283 inches. If you could get close enough to car it was easy to get cars disqualified. By telling them you knew his car was illegal some just left rather than be thrown out or engine torn down.
Back in the late 50,s and early 60,s you could buy a 283 from the Don Garlits Speed Shop. It would be bored & stroked to 352 Cu In! I bet that when the y block fords guy,s encountered one of those they where really surprised:tu
 

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Back in the late 50,s and early 60,s you could buy a 283 from the Don Garlits Speed Shop. It would be bored & stroked to 352 Cu In! I bet that when the y block fords guy,s encountered one of those they where really surprised:tu
I will bet. Surprise. Fooled em. Mike
 
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