it was changed

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Posted by 74merc (148.78.248.10) on May 09, 2001 at 14:02:41:

In Reply to: Re: 302 block answers posted by Fastman on May 09, 2001 at 02:12:56:

for emmission purposes and to lower the compression ratio to allow cheaper gas to run in the cars, right in the middle of the gas crisis and the change to unleaded fuel.

: : well sports fans the 302 from 68 to 81 all used the same deck height, 8.206". Now what is the complete casting number? D2??, 302=D2OZ-C, 351W=D2AE-BA, 351C=D2AE-DA. The 302s with this casting number were used thru 74 at least.

:
: : : I was looking for a rebuild kit for my 73 302. Many places show two kits. They show a 72 and earlier kit and a 73-76 and then a 77 kit which happens to be the same for the 72 and earlier. It says the deck of the 72-earlier and the 77-up is shorter, while the 73-76 has a taller deck. Here is my problem: My block casting number is D2** which means it is a 72 casting, but my car is a 73. Is the D2 casting going to be the same from a 72 as a 73, or is it going to change because of the year of the vehicle even though it has the D2 casting? I always thought all 68-80 blocks were essentially the same, guess I was wrong. I just don't want to buy a kit that is wrong.

: : : Can anyone confirm which deck hight the D2 casting is and be absolutely sure the D2 casting didn't change for 73 model year vehicles built in 72.

: : : Thanks.

: The block numbers appear to be D2OE. I am unaware if this D2OE is correct from what everyone is showing me for "actual" 302 casting numbers. I checked the number on Saturday while doing my trans. I didn't write the number down, but it was deffinitely a D2 and what I am almost sure was an OE. So D2OE is what I need info on.

: I als removed the engine tag on top of the motor(which means nothing if engine isn't original, but am positive it is).

: 302 C 73 16
: 2 J 5 KK258AC

: Now, this also doesn't help with the block casting #'s, but maybe it will help ID if the engine as the higher deck(which some of you are certain it is).

: I suppose I will just have the block machined(why did they change the deck, then go back to it later?). Just wanted to know about it is all.

: Thanks everyone for all the info. I hope you all have some more info so I can be absolutely sure.

: Thanks again.

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: for emmission purposes and to lower the compression ratio to allow cheaper gas to run in the cars, right in the middle of the gas crisis and the change to unleaded fuel. : : : : well sports fans the 302 from 68 to 81 all used the same deck height, 8.206". Now what is the complete casting number? D2??, 302=D2OZ-C, 351W=D2AE-BA, 351C=D2AE-DA. The 302s with this casting number were used thru 74 at least. : : : : : : I was looking for a rebuild kit for my 73 302. Many places show two kits. They show a 72 and earlier kit and a 73-76 and then a 77 kit which happens to be the same for the 72 and earlier. It says the deck of the 72-earlier and the 77-up is shorter, while the 73-76 has a taller deck. Here is my problem: My block casting number is D2** which means it is a 72 casting, but my car is a 73. Is the D2 casting going to be the same from a 72 as a 73, or is it going to change because of the year of the vehicle even though it has the D2 casting? I always thought all 68-80 blocks were essentially the same, guess I was wrong. I just don't want to buy a kit that is wrong. : : : : Can anyone confirm which deck hight the D2 casting is and be absolutely sure the D2 casting didn't change for 73 model year vehicles built in 72. : : : : Thanks. : : The block numbers appear to be D2OE. I am unaware if this D2OE is correct from what everyone is showing me for "actual" 302 casting numbers. I checked the number on Saturday while doing my trans. I didn't write the number down, but it was deffinitely a D2 and what I am almost sure was an OE. So D2OE is what I need info on. : : I als removed the engine tag on top of the motor(which means nothing if engine isn't original, but am positive it is). : : 302 C 73 16 : : 2 J 5 KK258AC : : Now, this also doesn't help with the block casting #'s, but maybe it will help ID if the engine as the higher deck(which some of you are certain it is). : : I suppose I will just have the block machined(why did they change the deck, then go back to it later?). Just wanted to know about it is all. : : Thanks everyone for all the info. I hope you all have some more info so I can be absolutely sure. : : Thanks again.

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