It's the upper seal, about 8" diameter. Have several carb to filter housing gaskets around so that's not an issue. Have several lids so I might try rtv on one of them. Thanks for all the input.
BC 1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc 1949 GMC 250 project in waiting 1960 C60 pasture art Retired GM dealer tech. 1980 - 2022
