rosco- Can someone confirm that the BB-7400 36x24T is indeed Italian?
Secondly,
what English threaded bottom bracket would folks suggest? BRBR

Qui si parla Campagnolo wrote:
A 7400 in english threading?
Or a UN-72 in 113mm length and english threading.

Maybe, but only because a standard taper crank ( The BB-7400
is 100% interchangeable with Nuovo Record 1046a) will only
go halfway up the taper of a UN-72.

An ACH 115 is a much closer fit. & left arm sits out a bit.

The BB-7400 spindle is asymmetric, so a simple "overall
length" analysis is wanting for accuracy.
--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971