Rochester 2bbl. Carb Question

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Wilhay74

Junior Member
Joined
Jun 29, 2026
Posts
4
Reaction score
5
Location
North Carolina
First Name
Wiley
Truck Year
1974
Truck Model
c10
Engine Size
350
Hello again, new to site and love it. Have 1974 Cheyenne with 350 2bbl. Bought this truck as a runner with only 32,000 miles but had been sitting for a while after original owner died so I wanted to replace carb. The new carb I bought came with thick base gasket that had a cut out for a hole on bottom of carb at one of the butterflies and I saw on a you tube video that if you use a base gasket that does not have the provision for the hole/vent it will cause oil to blow out everywhere, yet when I took the original carb off it had a thick gasket but with no provision for that hole in original gasket. So which is correct ?

Thanks
 

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