engine casting # 3892657 questions?

[qksilver]

I have had a 67 truck for ages and had some strength and some time and decided to strip it down. Body is wasted but interior and chrome are all good , which I needed to finish another truck. A great parts truck and maybe a fantastic one if somebody can tell me about the engine casting number.

I decided to check the number because I had been told it was a 283, got it from a guy who ordered it and bought it new. I he ordered it with a 327 and the paper work he gave me showed it but when it came in he was told it had a 283. Didn't make sense to him then and me when I got it from him. It didn't run like a 327 had power but seemed a little down, all the correct original parts were on it, only maintenance items replace.

So a low mileage abused never registered farm truck. Like I said the body was beaten on between his driving and all the fertilizer, mud etc.

Finally, I am getting to the point, looked up casting numbers and where I usually check, my little black book , it came back as a 67 302 engine block, casting date jan 14 67. Took a breath , drove home and looked it up 2 other places and one said the same thing 67 302 and the other said 65-67 302 /327/350. I haven't pulled the pan but did run the head casting numbers, they came back as 67 327 300 heads, not standard truck castings and not what come on a z/28 302. The date codes were from jan 4 67.

I won't have time this coming week to pull the pan but I did pull the flex plate and it looks like a forged crank, a wide parting line and could really tell but when I hit it with a hammer it had the ring sound like a forged one make

Tell me I have a one year 67 Z/28 engine block I can sell for big bucks...........and mean it to be true.

What do I have?

Thanks,
Steve

[67_C-30]

Originally Posted by qksilver

I have had a 67 truck for ages and had some strength and some time and decided to strip it down. Body is wasted but interior and chrome are all good , which I needed to finish another truck. A great parts truck and maybe a fantastic one if somebody can tell me about the engine casting number.

I decided to check the number because I had been told it was a 283, got it from a guy who ordered it and bought it new. I he ordered it with a 327 and the paper work he gave me showed it but when it came in he was told it had a 283. Didn't make sense to him then and me when I got it from him. It didn't run like a 327 had power but seemed a little down, all the correct original parts were on it, only maintenance items replace.

So a low mileage abused never registered farm truck. Like I said the body was beaten on between his driving and all the fertilizer, mud etc.

Finally, I am getting to the point, looked up casting numbers and where I usually check, my little black book , it came back as a 67 302 engine block, casting date jan 14 67. Took a breath , drove home and looked it up 2 other places and one said the same thing 67 302 and the other said 65-67 302 /327/350. I haven't pulled the pan but did run the head casting numbers, they came back as 67 327 300 heads, not standard truck castings and not what come on a z/28 302. The date codes were from jan 4 67.

I won't have time this coming week to pull the pan but I did pull the flex plate and it looks like a forged crank, a wide parting line and could really tell but when I hit it with a hammer it had the ring sound like a forged one make

Tell me I have a one year 67 Z/28 engine block I can sell for big bucks...........and mean it to be true.

What do I have?

Thanks,
Steve

That casting number is used on 302/327's. I have seen literature stating that these blocks are also correct for 350's, but I believe that is a mis-print because I have never seen a small journal 350.

The stamped number on the front of the block is going to ID the engine. It would have a forged crank if it was a 302 or a 327. It would have domed pistons if it were a 302, and if it is still assembled you could measure the stroke to tell the difference (it would be 3" if is a 302 and 3.25" if it a 327).

[qksilver]

yeah, it's an odd ball, I also have never seen a small journal 350. I doubt they would do that for only one year unless it was for racing and it wasn't. The 302 was..........but it is a 4 inch bore with the 283 stroke.

After the holidays I am going to tear it apart. I was hoping for some money from the block. I have quite a few 283 and 327 around.

Thanks,
Steve

[67RS/SSx2]

The 657 block was used in 302, 327, and 350 applications for the 1967 model year. The 350 version did have the large main journals (2.45"). It is the only version to have the large main journals in 1967 and was only available in the SS350 Camaro.

Of course, the 302 was a small journal block and was only available in the Z28 Camaro.

As a 327 (small journal for 67) the block was used in many passenger cars AND was commonly used in trucks.

There are three pieces of information to identify what you have. 1) the casting number (you already have that), 2) the date code (on the top-rear of the block where the bell housing connects to the block), and 3) the model code. The model code is on the front-passenger side of the unit just below the head.

Ge that information and you will know exactly what you have, but it is likely a truck 327.

I looked for 5 years to find a correct coded 657 block for my 67 RS/SS Camaro.

[67_C-30]

Originally Posted by 67RS/SSx2

The 657 block was used in 302, 327, and 350 applications for the 1967 model year. The 350 version did have the large main journals (2.45"). It is the only version to have the large main journals in 1967 and was only available in the SS350 Camaro.

Of course, the 302 was a small journal block and was only available in the Z28 Camaro.

As a 327 (small journal for 67) the block was used in many passenger cars AND was commonly used in trucks.

There are three pieces of information to identify what you have. 1) the casting number (you already have that), 2) the date code (on the top-rear of the block where the bell housing connects to the block), and 3) the model code. The model code is on the front-passenger side of the unit just below the head.

Ge that information and you will know exactly what you have, but it is likely a truck 327.

I looked for 5 years to find a correct coded 657 block for my 67 RS/SS Camaro.

Thanks for clarifying. I wasn't aware any blocks were either/or small and large journal.

I'd think it was a 327 car engine if it had 300HP heads and were dated that close to the block date code.

[Chevymaster461]

I have the exact same casting number mines a factory 67 327 4 bolt main large journal ... It's the way it came from factory... It also was a 4 barrel carb .. 2nd owner last owner was family an bought in 68

[diggerdog]

Originally Posted by 67RS/SSx2

The 657 block was used in 302, 327, and 350 applications for the 1967 model year. The 350 version did have the large main journals (2.45"). It is the only version to have the large main journals in 1967 and was only available in the SS350 Camaro.

Of course, the 302 was a small journal block and was only available in the Z28 Camaro.

As a 327 (small journal for 67) the block was used in many passenger cars AND was commonly used in trucks.

There are three pieces of information to identify what you have. 1) the casting number (you already have that), 2) the date code (on the top-rear of the block where the bell housing connects to the block), and 3) the model code. The model code is on the front-passenger side of the unit just below the head.

Ge that information and you will know exactly what you have, but it is likely a truck 327.

I looked for 5 years to find a correct coded 657 block for my 67 RS/SS Camaro.

I have 3892657 block dated A167

I have 2 sets of cylinder heads

I have a crankshaft and intake manifold for the same motor

These were all out of a 1967 Camaro SSRS350

[57taskforce]

Originally Posted by Chevymaster461

I have the exact same casting number mines a factory 67 327 4 bolt main large journal ... It's the way it came from factory... It also was a 4 barrel carb .. 2nd owner last owner was family an bought in 68

No such thing as a factory built 327 4 bolt main. Plenty of documentation on this site alone to prove it. Not saying your truck don't have a 4 bolt main, but I don't believe it came from the factory that way.