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-   -   1966 L72 427 Biscayne questions (https://www.yenko.net/forum/showthread.php?t=183338)

kenbrogan 09-02-2025 06:17 PM

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.

markjohnson 09-02-2025 06:32 PM

You have an original 6-cylinder car. The Cowl Tag will always state a V8.

kenbrogan 09-04-2025 03:46 AM

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)

scuncio 09-04-2025 03:53 AM

ID is the 427-425hp suffix code for a '66 full size Chevrolet.

Bill Pritchard 09-04-2025 05:42 AM

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.

Ralph Spears 09-04-2025 09:42 AM

GM Dymotape
 
1 Attachment(s)
..

TAR6569 09-04-2025 02:56 PM

If you can PM me the vin, I'll check my database and see if I have any info on the car

fsc66 09-04-2025 03:50 PM

FA code engine
 
1 Attachment(s)
Not sure where you’re getting your information as to the “FA” code but see attached from the Lime Book

LT1vette 09-04-2025 05:12 PM

Is it a four speed car?

mssl72 09-04-2025 09:00 PM

Quote:

Originally Posted by scuncio (Post 1678718)
ID is the 427-425hp suffix code for a '66 full size Chevrolet.

Yes, that. Not FA

Bill Pritchard 09-07-2025 07:48 PM

Looks like 'kenbrogan' was none too happy with what he found out here, since he's made no replies.

mssl72 09-08-2025 09:27 PM

You're probably right. I kinda wondered. I also wanted to see a pic or 2 of the car as well.

66cayne 09-08-2025 10:05 PM

3 Attachment(s)
just as an FYI, not all cars were numbered with 154 (V8) on the trim tag. I have a '66 Biscayne that was originally a 6cyl/3on the tree that I have converted into a L72/4speed/12 bolt. I have never attempted to change the original trim or vin tags and they both indicate 153 (6 cyl). Not sure if the Baltimore plant where my car was built did it differently than other plants. Tags are below.

jeffschevelle 09-12-2025 10:15 PM

Few if any of the internet engine suffix lists include 6-cylinder engines, but some of the old parts books do. I just pulled out the 10/1/1965 "Illustration and Special Information Catalog" and it says that in the 66 model year code FA was a 250 c.i. 6-cylinder with a manual transmission in a full size passenger car (Impala, Belair, Biscayne).

So your VIN tag says it was a 6-cylinder car, and your POP says it was a 6-cylinder car. At least the POP is real!

kenbrogan 09-22-2025 10:09 PM

1966 Biscayne question
 
Thank You everyone for your assistance. Now I know what I have here. The parts on this car are all L72 correct with correct dates. Somebody spent a great deal of time and money putting this together.

1967 4K 09-22-2025 10:33 PM

Flipped
 
2 Attachment(s)
Flipped

Xplantdad 11-07-2025 10:16 PM

I believe that this is on Bring-A-Trailer now?


https://bringatrailer.com/listing/19...2LjpYct3m-hDsQ

LT1vette 11-08-2025 02:33 AM

Great attention to detail. But, the exhaust manifolds don't appear to be correct...

66cayne 11-08-2025 05:10 PM

thats as good a recreation of a '66 L72 Biscayne that I have ever seen.

LT1vette 11-08-2025 07:12 PM

1 Attachment(s)
There is quite a few recreations around.....

mssl72 11-10-2025 09:40 PM

Nicely done for a clone. I'm glad to see they acknowledge it's 6 cylinder birth.

Xplantdad 11-10-2025 09:53 PM

Was sold at Mecum in Glendale in February of this year?


https://www.mecum.com/lots/1142342/1...-biscayne-l72/

66cayne 11-11-2025 12:10 AM

Incorrect shifter boot and carpet seal and those pieces are basically made of unobtaimium. Still very nice though. What did it sell for?

four5four 11-11-2025 12:25 AM

$60,500. price incl buyers fee of 10%

PeteLeathersac 11-11-2025 01:12 AM

1 Attachment(s)
Quote:

Originally Posted by Xplantdad (Post 1683116)
Was sold at Mecum in Glendale in February of this year?
https://www.mecum.com/lots/1142342/1...-biscayne-l72/


Perhaps when Ken B. purchased 153116L195463 before landing here w/ questions?:hmmm:
Bummer if 6-Cyl. VIN and heritage was news to him but gotta admire how he took it like a man also even said thank you plus instead of hiding the facts, mentions it all specifically in his own BAT sale listing.
Cheers to Ken Brogan:headbang: also hope whoever ends up w/ the car doesn’t re-vin it.:no:
:beers:
~ Pete

.

LT1vette 11-11-2025 02:55 AM

Quote:

Originally Posted by four5four (Post 1683124)
$60,500. price incl buyers fee of 10%


I think he'll be hard pressed to get that money again on BAT

Freddy B 11-13-2025 09:05 PM

The VIN tag variation you’re seeing isn’t unusual for mid-’60s GM builds. Sometimes a change in options or plant sequencing caused the body tag and VIN plate (Chevrolet final assembly) to get slightly out of sync, especially if the order was updated midstream. If all your components date correctly and the car’s configuration matches an L72 setup, then I think you’re on the right track.

66cayne 11-14-2025 12:00 AM

Quote:

Originally Posted by Freddy B (Post 1683321)
The VIN tag variation you’re seeing isn’t unusual for mid-’60s GM builds. Sometimes a change in options or plant sequencing caused the body tag and VIN plate (Chevrolet final assembly) to get slightly out of sync, especially if the order was updated midstream. If all your components date correctly and the car’s configuration matches an L72 setup, then I think you’re on the right track.

oh boy, here we go again...

LT1vette 11-14-2025 01:10 AM

Myself as the pessimist. I thought it would fetch more than $32K.
But the "market" is starting to find the correct level after the past few years...

66cayne 11-14-2025 04:39 PM

Quote:

Originally Posted by LT1vette (Post 1683341)
Myself as the pessimist. I thought it would fetch more than $32K.
But the "market" is starting to find the correct level after the past few years...

he didn't sell it at $32K, that bid did not meet his reserve. With 70 Chevelle SS, Camaro Z28s COPOs and Hemi replicas selling for north of $80k it's about time the market wises up. 'Real' cars are always going to bring the money at least until the last of 'us' are gone.

LT1vette 11-14-2025 06:34 PM

Quote:

Originally Posted by 66cayne (Post 1683394)
he didn't sell it at $32K, that bid did not meet his reserve. With 70 Chevelle SS, Camaro Z28s COPOs and Hemi replicas selling for north of $80k it's about time the market wises up. 'Real' cars are always going to bring the money at least until the last of 'us' are gone.


Only had 1 bid? Maybe wrong time of year to be selling...


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