DILL 627 valve stem caps.
As mentioned above these caps were used everywhere.
The Schwinn factory used the 627 caps on the Stingray.
I have these on all my Survivors as shown on my ‘64 Super Deluxe below.
Pontiac used various length valve stem “extensions” according to the wheel disc usage.
Below is Pontiac information and MPC application.
My ‘65 GTO Survivor with it’s tire valve extensions for the wire wheel disc.
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1965 GTO Unrestored Survivor 389 / 335 4 BBL.
1966 GTO Unrestored Survivor 389 / 360 Tri-Power
Early (63-66) Schwinn Stingrays, all Unrestored Survivors
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