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Build Sheet Removal

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Old May 11, 2026 | 10:25 AM
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Default Build Sheet Removal

1970 Corvette L-48 - Has anyone been successful at accessing and removing a Build Sheet after removing the metal gas filler neck and next, the gas filler neck boot?
Thanks in advance ...
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Old May 11, 2026 | 01:13 PM
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Hello,
The Build Sheet is VERY, VERY fragile .
So is EASY to destroy.
Originally it was applied using glue. SLOPPILY.
Even getting it off the tank with the tank removed is difficult.
If you can see it's there it's worthwhile dropping the tank.
Regards....
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Old May 11, 2026 | 01:48 PM
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I agree with Alan. Take a look through the fill area ( a scope is helpful). If it’s there my advice is to drop the tank. Most folks use a new razor blade to carefully attempt to remove it. Mine came off in pieces. I cannot imagine after 56 years it would be stable enough to try that operation through the fill hole alone.

Best of luck!

PS. There all many reports of a second sheet in various places such as behind the dash and under carpets, that are not glued down to anything.
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Old May 11, 2026 | 02:17 PM
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Don't forget to take some really good pictures of the sheet before you try to remove it. Good luck, Paul
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Old May 11, 2026 | 04:49 PM
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Originally Posted by nkawtg
1970 Corvette L-48 - Has anyone been successful at accessing and removing a Build Sheet after removing the metal gas filler neck and next, the gas filler neck boot?.
The base engine (350/300) for the 1970 Corvette was referred to as ZQ3, not L-48.

As far as the build sheet, as others have mentioned, it is fragile… There is no way that I would attempt to remove the build sheet with the tank still in place. I would remove the tank and source a single edge razor blade. The trick is to slide the blade between the glue and the tank (NOT the glue and the build sheet). Keep the blade angled at the tank, proceed slowly, and you should be able to remove it in one piece.

Once removed, I’d store it in an acid free plastic sleeve used for document archival purposes. Do NOT laminate or tape it.

Good luck!

Regards,

Stan Falenski
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Old May 11, 2026 | 05:59 PM
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as mentioned..take tons of pics!!

i could not remove mine.. so i covered with a acid free paper and put it back under the car after i had tank out..

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Old May 11, 2026 | 06:09 PM
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You can be a lot more cavalier with a 77-82 car, since you can get the records still exist.

For your car, I'd consider dropping the tank. Put in an electric fuel pump while it's down, and be EFI-ready.

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