Originally Posted by Tiny
FWIW my 53 210 has an unvented cap however the system is vented. There's a small notch on the filler tube rim that allows the passage of air. The notch is in the 12 o'clock position in the pic below.
That is something you wouldn’t really notice. I have to check my truck when I get a chance!

Last edited by Phak1; 05/27/2021 1:35 PM.

Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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