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tubman · 02-27-2018, 03:10 PM

The Merc carb has the same bolt pattern as a "small base" Rochester 2GC (the throttle bores are smaller on the Merc carb). It was a popular bolt pattern back in the day; I have an Offenhauser three carb manifold for a '54-'56 Olds, and it has the same bolt pattern as these carbs. When I got it, it had one Carter two barrel bolted to it, so that was a pretty common pattern.

02-27-2018, 03:10 PM	#4
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,319	Re: Holley 885 carb vs Holley 94 The Merc carb has the same bolt pattern as a "small base" Rochester 2GC (the throttle bores are smaller on the Merc carb). It was a popular bolt pattern back in the day; I have an Offenhauser three carb manifold for a '54-'56 Olds, and it has the same bolt pattern as these carbs. When I got it, it had one Carter two barrel bolted to it, so that was a pretty common pattern.