273 engine questions

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Lee273

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I picked up a 65-66 273 4bbl engine a few years back to install in a 1966 dart I had. Long store short I ended up selling the car but still have the engine which I am trying to sell.

I looked up the casting# and have a few questions if someone could help me understand.
Block # 2465330-3 (64-66 LA) with SP casting under the block casting
Heads # 2465313-2 (64-65)
Intake # 2536563 (66-67)
And a stamped number on left front of block 42303
And engine is blue not the correct red.

In researching the web I read that a 66 intake can not fit the 64-65 heads because the angle is wrong. Yet the 273 I purchased was told it was running prior to being pulled from the car and if that's true why is the intake working with the heads?

I also read other forums where mopar took left over parts and made them work to clear inventory and if that's the case could they have made the 66-67 intake above work with the 64-65 heads?

In other research I was trying to find out if the engine was a commando model and various forums again I read that there is no casting on the block that the only way to truly tell is by looking at the pistons...yet one guy told me there was a casting on the block that my engine was not a commando. So how do I really tell? Is the SP casting on my block the key?

My goal is to validate the engine so I understand and can past the correct info onto the buyer.

My thought since the engine was painted blue is that somewhere in it's life it was repainted the blue to make it look like a 318. My gut tells me it's a 1965 engine because of the heads (64-65) and put the 4bbl intake (66-67) on it after having a machine shop make it work. Other than that I do not have any answers as to why I have a completely assembled engine with intake and heads that are not to be married.

Any help would be great. Thanks

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A far as the intake goes,yes it may have been re-drilled. Common.
 
Let me look up the numbers to be sure. Like Darter said, it was probably drilled out. A 66 and newer intake has larger holes at a 90° angle to the cylinder head so drilling out the holes for the smaller bolts and shallower angle of the 64-65 273's is not as big of an issue.
 
Yep. The #315 heads are 64-65 numbers and the intake is a 66-67 non CAP intake. 99% sure it was redrilled.
 
I picked up a 65-66 273 4bbl engine a few years back to install in a 1966 dart I had. Long store short I ended up selling the car but still have the engine which I am trying to sell.
Is there any more numbers on the block casting? Isn't the picture of the casting numbers incomplete? Should the block size be in the next three numbers after the dash mark,
I looked up the casting# and have a few questions if someone could help me understand.
Block # 2465330-3 (64-66 LA) with SP casting under the block casting
Heads # 2465313-2 (64-65)
Intake # 2536563 (66-67)
And a stamped number on left front of block 42303
And engine is blue not the correct red.

In researching the web I read that a 66 intake can not fit the 64-65 heads because the angle is wrong. Yet the 273 I purchased was told it was running prior to being pulled from the car and if that's true why is the intake working with the heads?

I also read other forums where mopar took left over parts and made them work to clear inventory and if that's the case could they have made the 66-67 intake above work with the 64-65 heads?

In other research I was trying to find out if the engine was a commando model and various forums again I read that there is no casting on the block that the only way to truly tell is by looking at the pistons...yet one guy told me there was a casting on the block that my engine was not a commando. So how do I really tell? Is the SP casting on my block the key?

My goal is to validate the engine so I understand and can past the correct info onto the buyer.

My thought since the engine was painted blue is that somewhere in it's life it was repainted the blue to make it look like a 318. My gut tells me it's a 1965 engine because of the heads (64-65) and put the 4bbl intake (66-67) on it after having a machine shop make it work. Other than that I do not have any answers as to why I have a completely assembled engine with intake and heads that are not to be married.

Any help would be great. Thanks

View attachment 1715153734

View attachment 1715153735

View attachment 1715153736

View attachment 1715153738
I picked up a 65-66 273 4bbl engine a few years back to install in a 1966 dart I had. Long store short I ended up selling the car but still have the engine which I am trying to sell.

I looked up the casting# and have a few questions if someone could help me understand.
Block # 2465330-3 (64-66 LA) with SP casting under the block casting
Heads # 2465313-2 (64-65)
Intake # 2536563 (66-67)
And a stamped number on left front of block 42303
And engine is blue not the correct red.

In researching the web I read that a 66 intake can not fit the 64-65 heads because the angle is wrong. Yet the 273 I purchased was told it was running prior to being pulled from the car and if that's true why is the intake working with the heads?

I also read other forums where mopar took left over parts and made them work to clear inventory and if that's the case could they have made the 66-67 intake above work with the 64-65 heads?

In other research I was trying to find out if the engine was a commando model and various forums again I read that there is no casting on the block that the only way to truly tell is by looking at the pistons...yet one guy told me there was a casting on the block that my engine was not a commando. So how do I really tell? Is the SP casting on my block the key?

My goal is to validate the engine so I understand and can past the correct info onto the buyer.

My thought since the engine was painted blue is that somewhere in it's life it was repainted the blue to make it look like a 318. My gut tells me it's a 1965 engine because of the heads (64-65) and put the 4bbl intake (66-67) on it after having a machine shop make it work. Other than that I do not have any answers as to why I have a completely assembled engine with intake and heads that are not to be married.

Any help would be great. Thanks

View attachment 1715153734

View attachment 1715153735

View attachment 1715153736

View attachment 1715153738
Block # 2465330 - 3?? - ?, in the block casting picture, there is usually more numbers. If you can fill in the question marks I believe it should tell what the block Is. Are there any more numbers?
 
Block # 2465330 - 3?? - ?, in the block casting picture, there is usually more numbers. If you can fill in the question marks I believe it should tell what the block Is. Are there any more numbers?

There are no other numbers where your ?? - ? are. There is something below the 24 though. See photos

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20180317_151605.jpg
 
Block # 2465330 - 3?? - ?, in the block casting picture, there is usually more numbers. If you can fill in the question marks I believe it should tell what the block Is. Are there any more numbers?
The#330 block is a 64-66 casting number.
 
Yep. The #315 heads are 64-65 numbers and the intake is a 66-67 non CAP intake. 99% sure it was redrilled.[/QUOTE
The#330 block is a 64-66 casting number.

I put that in the original post. But how do I tell if it was a commando engine and the actual year. I was guessing since the heads were 64-65 it must be a block used in 64-65 and not in 66.
 
I put that in the original post. But how do I tell if it was a commando engine and the actual year. I was guessing since the heads were 64-65 it must be a block used in 64-65 and not in 66.
You can't tell if it's a Commando/Charger engine without looking at the pistons. Same block, crank, rods, heads. Domed pistons, different cam, and of course intake, carb, distributor, valve covers.
 
You can't tell if it's a Commando/Charger engine without looking at the pistons. Same block, crank, rods, heads. Domed pistons, different cam, and of course intake, carb, distributor, valve covers.

Do you have a photo of the domed pistons for a commando engine? I can put a spark plug and look. Attached is photo of complete engine. Did not receive the distributor.

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20180303_175059_resized.jpg
 
The#330 block is a 64-66 casting number.
Toolman awhile back you and everyone helped me I'd my 67 273 commando. My engine has 273 cast in the block. That's why I was asking about the missing numbers. I wonder what is the difference with the 330.
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Toolman awhile back you and everyone helped me I'd my 67 273 commando. My engine has 273 cast in the block. That's why I was asking about the missing numbers. I wonder what is the difference with the 330.View attachment 1715153828 View attachment 1715153829
The 10-20-66 is the casting date. That would be a 67 block I would imagine. The hand stamps on the block I don't know for sure but the 0273 is obvious. The 12-21 may be when the engine was assembled (December 21)
 
The 10-20-66 is the casting date. That would be a 67 block I would imagine. The hand stamps on the block I don't know for sure but the 0273 is obvious. The 12-21 may be when the engine was assembled (December 21)
Yes that is what we agreed it was in 67 273 and by the way what looks like an o is a C273 and I was told the C ment it was a 67 year model. My question is what's up with the 3 3 0 - 3 on Lee's block
 
Yes that is what we agreed it was in 67 273 and by the way what looks like an o is a C273 and I was told the C ment it was a 67 year model. My question is what's up with the 3 3 0 - 3 on Lee's block

Just looking to learn something thanks guys
 
Yes that is what we agreed it was in 67 273 and by the way what looks like an o is a C273 and I was told the C ment it was a 67 year model. My question is what's up with the 3 3 0 - 3 on Lee's block
C is special pistons.
 
Yes that is what we agreed it was in 67 273 and by the way what looks like an o is a C273 and I was told the C ment it was a 67 year model. My question is what's up with the 3 3 0 - 3 on Lee's block
?? I see 42303.
 
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