Early 235’s did have bolts going thru the top but changed in 1955. 55-62 235’s have four bolts on the valve cover rim like your 261.


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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