Join Date: Feb 2010
Location: Newport Beach, CA and Melbourne, Aus.
I've owned a couple of these. Of course I will defer to Jim in relation to actual engine numbers but some background may be of interest.
Alfa started putting 1.6 engines into Alfetta's in 1975 and continued right through till the end of 75 production. They also appeared, as Jim says, in 116 series Giulietta's from '77 to '85. They were built in large volumes, around 100,000 for the 75 alone.
They also continued to build 1.6 Spiders for European markets all the way through to the end of Spider production in the early 90's. Most if not all of these were carb's as well so for all intents and purposes their blocks would be interchangeable with contemporary Alfetta / Giulietta / 75.
The external dead give away is the combination of late model features, like the front cover mounted oil filter and 6-bolt crankshaft, with the lower block height of earlier 1600's. As in, the head is flush with the top of the water pump. Of course they also have the 78mm bore and if you're familiar with later engines the casting marks around the block will look the same.
1973 105 GTV (Alfa #6 of 19 owned)