Need Help With Number Codes
Thread Starter
Racer
Joined: Jan 2014
Posts: 430
Likes: 17
From: McKinney, TX
Need Help With Number Codes
My 66 roadster has some confusing numbers.
The VIN #19467S122685 - would seem to imply a chevy, corvette, convertible, 1966, built in St. Louis and the Production #122685 would appear to show a late April production month.
But I see this same VIN list for 1965 corvettes with a different build date.
The Block number is 3782870 and this shows up as a 1965 date. I believed I had a 327/350 but this number shows a 327/250. There is also another number on the right side of the motor - 4931752.
Can anyone provide some clarification?
The VIN #19467S122685 - would seem to imply a chevy, corvette, convertible, 1966, built in St. Louis and the Production #122685 would appear to show a late April production month.
But I see this same VIN list for 1965 corvettes with a different build date.
The Block number is 3782870 and this shows up as a 1965 date. I believed I had a 327/350 but this number shows a 327/250. There is also another number on the right side of the motor - 4931752.
Can anyone provide some clarification?
Thread Starter
Racer
Joined: Jan 2014
Posts: 430
Likes: 17
From: McKinney, TX
Le Mans Master
Joined: Apr 2006
Posts: 5,347
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From: San Clemente CA
Check the numbers on the passenger side front pad of block ( look at the ledge below the front of the valve cover. You will see one set of numbers which will be your VIN and another which will denote the engine and date. Look at those two sets of characters and post them.
BTW, that first 1 is just a holding character so your 66 is really number 22,685.
BTW, that first 1 is just a holding character so your 66 is really number 22,685.
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The 870 blocks stopped in 65. 66 would have 3958174.
Last edited by Geralds57; Feb 19, 2014 at 04:01 PM.
Race Director
Joined: Jul 2001
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Thread Starter
Racer
Joined: Jan 2014
Posts: 430
Likes: 17
From: McKinney, TX
Edge of Block
Check the numbers on the passenger side front pad of block ( look at the ledge below the front of the valve cover. You will see one set of numbers which will be your VIN and another which will denote the engine and date. Look at those two sets of characters and post them.
BTW, that first 1 is just a holding character so your 66 is really number 22,685.
BTW, that first 1 is just a holding character so your 66 is really number 22,685.
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Thread Starter
Racer
Joined: Jan 2014
Posts: 430
Likes: 17
From: McKinney, TX
66 Engine Numbers
It looks like I have a 1965 327/350 block and 1966 top half.
1. Front pad (engine ID stamped) number - 4931752
2. Rear casting (raised) number - 3782870 --- this is a 1965 number
3. Heads number - 3782461 --- this is a 1966 number
4. Carb, Dist, Alt, Reg, Expansion, Starter, Coil are all 1966 numbers
5. The VIN on the plated under the glove compartment is -- 19467S122684 This being the production number and is 1966. And does not match engine ID number.
Would you all agree I have a '65 block with everything else being '66? I'm not showing this car so does it really matter? I'd just like to know where the block came from.
1. Front pad (engine ID stamped) number - 4931752
2. Rear casting (raised) number - 3782870 --- this is a 1965 number
3. Heads number - 3782461 --- this is a 1966 number
4. Carb, Dist, Alt, Reg, Expansion, Starter, Coil are all 1966 numbers
5. The VIN on the plated under the glove compartment is -- 19467S122684 This being the production number and is 1966. And does not match engine ID number.
Would you all agree I have a '65 block with everything else being '66? I'm not showing this car so does it really matter? I'd just like to know where the block came from.
Le Mans Master
Joined: Mar 2009
Posts: 7,989
Likes: 3,966
From: Cold Harbor, VA
It looks like I have a 1965 327/350 block and 1966 top half.
1. Front pad (engine ID stamped) number - 4931752
2. Rear casting (raised) number - 3782870 --- this is a 1965 number
3. Heads number - 3782461 --- this is a 1966 number
4. Carb, Dist, Alt, Reg, Expansion, Starter, Coil are all 1966 numbers
5. The VIN on the plated under the glove compartment is -- 19467S122684 This being the production number and is 1966. And does not match engine ID number.
Would you all agree I have a '65 block with everything else being '66? I'm not showing this car so does it really matter? I'd just like to know where the block came from.
1. Front pad (engine ID stamped) number - 4931752
2. Rear casting (raised) number - 3782870 --- this is a 1965 number
3. Heads number - 3782461 --- this is a 1966 number
4. Carb, Dist, Alt, Reg, Expansion, Starter, Coil are all 1966 numbers
5. The VIN on the plated under the glove compartment is -- 19467S122684 This being the production number and is 1966. And does not match engine ID number.
Would you all agree I have a '65 block with everything else being '66? I'm not showing this car so does it really matter? I'd just like to know where the block came from.
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,926
From: Washington Michigan
It looks like I have a 1965 327/350 block and 1966 top half.
1. Front pad (engine ID stamped) number - 4931752
2. Rear casting (raised) number - 3782870 --- this is a 1965 number
3. Heads number - 3782461 --- this is a 1966 number
4. Carb, Dist, Alt, Reg, Expansion, Starter, Coil are all 1966 numbers
5. The VIN on the plated under the glove compartment is -- 19467S122684 This being the production number and is 1966. And does not match engine ID number.
Would you all agree I have a '65 block with everything else being '66? I'm not showing this car so does it really matter? I'd just like to know where the block came from.
1. Front pad (engine ID stamped) number - 4931752
2. Rear casting (raised) number - 3782870 --- this is a 1965 number
3. Heads number - 3782461 --- this is a 1966 number
4. Carb, Dist, Alt, Reg, Expansion, Starter, Coil are all 1966 numbers
5. The VIN on the plated under the glove compartment is -- 19467S122684 This being the production number and is 1966. And does not match engine ID number.
Would you all agree I have a '65 block with everything else being '66? I'm not showing this car so does it really matter? I'd just like to know where the block came from.
Thread Starter
Racer
Joined: Jan 2014
Posts: 430
Likes: 17
From: McKinney, TX
Dob
I checked the Casting Date and is shows H274. That would be August 2, 1964. That solves some questions.
The bad news just gets worse. Thought I had a '65 engine because of the Casting Number but it was used in 64 also and the DOB is a fact. Looks like I have a '64 block with '66 top end.
Question 1. Is August 2, 1964 a late production date?
Question 2. I know it is a 327 CI motor but how do I know the HP?
Race Director
Joined: Oct 2000
Posts: 12,666
Likes: 3,122
From: Shamong, NJ
uu
I checked the Casting Date and is shows H274. That would be August 2, 1964. That solves some questions.
The bad news just gets worse. Thought I had a '65 engine because of the Casting Number but it was used in 64 also and the DOB is a fact. Looks like I have a '64 block with '66 top end.
Question 1. Is August 2, 1964 a late production date?
Question 2. I know it is a 327 CI motor but how do I know the HP?
I checked the Casting Date and is shows H274. That would be August 2, 1964. That solves some questions.
The bad news just gets worse. Thought I had a '65 engine because of the Casting Number but it was used in 64 also and the DOB is a fact. Looks like I have a '64 block with '66 top end.
Question 1. Is August 2, 1964 a late production date?
Question 2. I know it is a 327 CI motor but how do I know the HP?
Without an engine suffix code, stamped in the pad, there's no way of knowing what the block started out life as, and/or what it was installed in.