Ribbed Block Identification
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Joined: Jul 2006
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From: East Helena MT
Ribbed Block Identification
Hello everyone!
I know later on I am going to have to tear the engine apart to find out exactly what I have, but I have a question on a block that is in my 73 F-100 parts pickup.
Today as I was tearing the front axles off for the disk brakes I looked at the engine block and noticed it had ribs on the side. I got to thinking about that all day and this evening looked at some of my Ford engine books.
From what I read 427 blocks had these as reinforcements, and I know I don’t have a 427 block. Another book of mine indicated all 428 blocks made after 1972 used FT truck blocks and could be identified by the ribs and a 3/8 inch plug for an external oil drain line. I know my block has the 3/8 oil plug they were referring too.
Can any one provide me with some info on the block as to what it might be? Tomorrow I will look for some casting numbers, as I have none right now. Thanks for the help.
Jeff
I know later on I am going to have to tear the engine apart to find out exactly what I have, but I have a question on a block that is in my 73 F-100 parts pickup.
Today as I was tearing the front axles off for the disk brakes I looked at the engine block and noticed it had ribs on the side. I got to thinking about that all day and this evening looked at some of my Ford engine books.
From what I read 427 blocks had these as reinforcements, and I know I don’t have a 427 block. Another book of mine indicated all 428 blocks made after 1972 used FT truck blocks and could be identified by the ribs and a 3/8 inch plug for an external oil drain line. I know my block has the 3/8 oil plug they were referring too.
Can any one provide me with some info on the block as to what it might be? Tomorrow I will look for some casting numbers, as I have none right now. Thanks for the help.
Jeff
Needsmorecoffee.
Joined: Oct 2004
Posts: 3,624
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From: CT
Some 68 and later blocks can have the ribs. Some say they were used to help support the aging and tired FE molds. Some say they were added for strenght. True that the 70's era 427 and 428 service blocks have these ribs. But so do lots of other bore blocks besides. So there is really nothing special I'm afraid. Unless you see crossbolts above the oil pan rail it's not a 427.
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