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Found the number 302 stamped in my short block. My mustang is a 68 289 C code built in February of 68. I know it's the number matching block because the sequence number that matches my vin is stamped in the rear of the short block. Why on earth does it say 302 when its a C code 289? Here's the picture, you can see 302 running vertically at the bottom
 

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SBF Bible written by Bob Mannel. Best money I've ever spent on a Mustang book.

http://www.fordsmallblock.com

"Windsor plant was planning on making 302 V8's, but that this never happened. Instead, Windsor handled all the 289 production ... But this decision was made after Windsor had already tooled for 302 blocks"
 

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Just curious....why would the factory stamp the VIN on the block if it was not so special 289/302?
I believe that engines were stamped with the VIN of the car they belonged to starting in late 1967 due to federal regulations. That's why you see 2nd+ generation Mustangs advertised as "numbers matching" - because the VIN stamped on the block matches the car's VIN. Most if not all (not sure about Shelbys / K codes) '65/'66 cars cannot be truly numbers matching. Not sure how early they started this in 1967 production.
 

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I believe that engines were stamped with the VIN of the car they belonged to starting in late 1967 due to federal regulations. That's why you see 2nd+ generation Mustangs advertised as "numbers matching" - because the VIN stamped on the block matches the car's VIN. Most if not all (not sure about Shelbys / K codes) '65/'66 cars cannot be truly numbers matching. Not sure how early they started this in 1967 production.
You are absolutely correct on this, Kelly. Thanks for the info. Did some research after your response, and it appears that Ford started stamping at least partial VINs on most of the blocks beginning 1/1/1968.
 

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In 68, Ford frequently used 302 blocks to build 289 engines, as stocks were depleted. The only difference between the 289 block and the 302 block was the cylinders extended 1/8" farther down in the 302, to support the pistons with the 1/8" longer stroke.
 
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Found the number 302 stamped in my short block. My mustang is a 68 289 C code built in February of 68. I know it's the number matching block because the sequence number that matches my vin is stamped in the rear of the short block. Why on earth does it say 302 when its a C code 289? Here's the picture, you can see 302 running vertically at the bottom
Please search this . . it has been discussed and discussed and discussed and . . . .
 

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Note the numbers on the casting are raised not stamped. They are in the casting tooling thus raised on the casting.

When numbers are added after production they are stamped thus impressed/depressed.

Like was stated above the casting tooling was updated (302) while 289 assemblies were still being produced.
 

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I have the same 68 289 with 302 block, also VIN stamped. The low-compression heads sucked that year, but we "zero decked" the block, planed and ported the heads along with forged internals and .30 over with flat-top pistons, and made over 320hp on the engine dyno. Good luck!
 

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Lets keep in mind this is 1968 production, not Cleveland substituting 302 for 289 at end of 1967 production. In 1968 Cleveland only manufactured 302's.

Sparta's block is cast "WF" (Windsor Foundry), and Windsor had already tooled for 302, before plans changed and they ended up manufacturing 289's, thus ending up using the C8AE-6015-B 302 block tooling already setup for 289's.

Now here here is the best part Bob Mannel found, around end of '68 Windsor 289 production, WF appears to have dug out old inventory of C6AE-C 289 blocks to deplete them. Ie. June '68 assembled engine with June '67 cast block!

:cheers:
 

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Found the number 302 stamped in my short block. My mustang is a 68 289 C code built in February of 68. I know it's the number matching block because the sequence number that matches my vin is stamped in the rear of the short block. Why on earth does it say 302 when its a C code 289? Here's the picture, you can see 302 running vertically at the bottom
Lets be clear - the '302' is cast in not stamped in. I dont say this to be an a55 - some ID markings are cast in and some are stamped in after casting.

Now as far as your 289 having a '302' block:
For 1966 and 1967 Ford was building 289 engines at two engine plants - Cleveland OH and Windsor Ont.

For 1968 the 302 was introduced. The 1968 Mustang was available with only two small V8s: 289 2V (C code) and 302 4V (J code).

The Windsor engine plant began casting its own '302' block C8AE-B for 1968 in anticipation of 302 production. But the Windsor plant ended up never producing a true (3.00 stroke) 302 but used its new '302' block to continue to produce 289s. Only 289s were built at Windsor in 1968. All 1968 289s were produced at the Windsor plant with C8AE-B blocks. All 1968 302s were produced at the Cleveland engine plant with C8OE-A blocks.

You have a 1968 Windsor built 289 with the C8AE-B '302' block. Note the cast in 'WF' (Windsor Foundry) in the lifter valley in your pic. You can verify the cast in casting number and casting date codes on the lower rear right hand side of the block:


Paul
 

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Now here here is the best part Bob Mannel found, around end of '68 Windsor 289 production, WF appears to have dug out old inventory of C6AE-C 289 blocks to deplete them. Ie. June '68 assembled engine with June '67 cast block!
All 1968 289s were produced at the Windsor plant with C8AE-B blocks.
See anomoly above. I think there may have been C6AE-C blocks carried into beginning of '68 production too.

:cheers:
 
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