Avanti Engine!

[mfg]

What is a quick visual way to determine if a stock 1984 Avanti is equipped with either a LG4 305 engine or the more powerful L69 305 engine? (without checking engine code numbers)

[Gunslinger]

While this may not pertain to an Avanti…the LG4 had a single snorkel air cleaner while the L69 had a dual snorkel.  The LG4 also had a 2” exhaust manifold outlet while the L69 had 2 1/4” manifold outlets.  There were internal differences such as the cam and a different advance curve but you can’t see that.

Getting the carburetor numbers and looking them up should help as well.