Identification number on 400 small block
On these, if the early big block is in the car you will have to get under the motor to see the casting date. Do it while the car is on a lift. The casting dates look something like this "E 12 7". The "E" stands for the month of the year with "A" being the month of January, "B" being the month of February and so on thru the letters to December. In this case the "E" stands for the month of May, the fifth month of the year and the fifth letter of the alphabet.
Small-Block Chevy Cylinder Head Identification
The "12" stands for the 12th day of the month. The "7" is the year of the decade. Now unfortunately this could be '57, '67, '77, '87 or '97 depending on which part you are looking at. Some casting dates have both the year of the decade and the decade itself. They look like this "E 12 77", meaning May 12, The fun starts when you have a casting date from the first nine days of the month that look like this "D 2 6". Does that stand for April 2, or does it stand for April 26th and the year is missing or hard to see?
You have to look closely and carefully to be sure. We appreciate the support and encouragement we have received from our visitors around the world for the past 20 years.
Engine Prefix and Suffix Codes - Part Trace
Don't forget to follow us on Facebook, and if you run a website or write for a blog, please link to our site! Block Casting Number The block casting number on smallblock and big block Chevy V-8 motors is located on a ledge found at the rear of the block, most often on the driver's side. Block Casting Date The block casting date indicates when the block itself was cast in the foundry. Go to Casting Number Locations, Part 2 We appreciate the support and encouragement we have received from our visitors around the world for the past 20 years.
It seemed that the muscle-car era was over. In , Chevrolet introduced the cubic-inch small-block engine into this environment, offering it for truck and large passenger car use. Although there were no high-performance editions of the , it is currently popular to rebuild and customize the for high-performance applications, partially due to its availability and price.
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The Chevrolet was produced from to , and identifying it is a matter of locating and referencing the engine code suffix. Look for the engine code.
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One thing that stumps Cleveland enthusiasts more than anything else are the nuances not explained in the Ford parts books. For example, did you know Ford produced blocks in with small-block bellhousing bolt patterns and undrilled big-block bolt patterns which can be drilled and tapped? And did you also know Australian Cleveland blocks are different than their North American counterparts? Though the Cleveland V-8 is as popular in Australia as the smallblock Chevy or 5.
The C and C were produced in Australia from to At least two things make the Australian Cleveland block different than its North American cousin. Another belief is Ford North America shipped discontinued Cleveland casting molds to Australia in when production ended here.
Look for this with the and M blocks only. On the left is a two-bolt main block. On the right is a C with four-bolt mains. The and M blocks have larger 3.
D blocks have a D-shaped boss and square blocks have a male or female boss. Another point to be mindful of is obscure block castings hidden away in race shops, garages, and barns. The most obvious difference between the C left and right is the bellhousing bolt pattern. The C has a six-bolt, small-block bolt pattern.
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Here are the C and blocks side by side for a deck comparison. The C is in front; the is behind it. Do you see the height difference? This is a four-bolt steel billet main caps on a Cleveland. I suggest you stud your main caps, even with stockers. It only improves security.
Small Block Chevy Casting Numbers
Four-bolt main conversions call for line boring and honing. Block prep should include thread chasing— and I mean every single bolthole. All bolt holes should be clean and free of burrs for accurate torque readings. These blocks followed convoluted paths all over the world from North America and Australia, leaving us with more questions than answers. You may find these block castings at estate auctions, garage sales, eBay, Craigslist, classified ads, old dusty race shops, and other places. You find them completely machined and partially machined. Sometimes, you find raw castings.
Expect to also see rough-cut Cleveland blocks with 3.