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Old 09-02-2025, 05:17 PM
kenbrogan kenbrogan is offline
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Default 1966 L72 427 Biscayne questions

I recently purchased a very nice 1966 Biscayne that is suspected to be an L72, The car has all of the date correct component's with matching casting numbers that would represent it to be a real L72. This includes the engine block, heads, bell housing, intake, carb, transmission, tail shaft housing, starter, alternator, rear end housing, along with radio delete, heater delete, 7k tach and more.

My only concerns are that the VIN plate in the driver door pilar and the protecto plate have 15311 yet the cowl tag uses the 15411. I have researched and found that this could happen if the vin plate and protecto plate was produced prior to changes made with options during the ordering timeline?

I appreciate any feedback, I want to fully understand this car.
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Old 09-02-2025, 05:32 PM
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You have an original 6-cylinder car. The Cowl Tag will always state a V8.
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Old 09-04-2025, 02:46 AM
kenbrogan kenbrogan is offline
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the original protecto plate that I have has the code F0329FA. In researching this that code on the plate represents

F- Flint Michigan
0329 - March 29 1966 - engine assembly date
FA - 427 CID / 425 HP - L72 engine with manual transmission (M21)
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Old 09-04-2025, 02:53 AM
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ID is the 427-425hp suffix code for a '66 full size Chevrolet.
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Old 09-04-2025, 08:00 PM
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Quote:
Originally Posted by scuncio View Post
ID is the 427-425hp suffix code for a '66 full size Chevrolet.
Yes, that. Not FA
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Old 09-04-2025, 04:42 AM
Bill Pritchard Bill Pritchard is offline
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Looks like you may need new research material, Ken. And unfortunately, reproduction ProtectoPlates are available from several sources....they can be made to say whatever the buyer wants.
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Old 09-04-2025, 08:42 AM
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Old 09-04-2025, 01:56 PM
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If you can PM me the vin, I'll check my database and see if I have any info on the car
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Old 09-04-2025, 02:50 PM
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Default FA code engine

Not sure where you’re getting your information as to the “FA” code but see attached from the Lime Book
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Old 09-04-2025, 04:12 PM
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Is it a four speed car?
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