I`ve just recently started my 68 FE 390 after sitting 7 yrs. Yep mine has 352 embossed on the front ds. I`ve heard you only truly know the cu.in. is by measuring the bore.
Mine is a 2bbl
Only problem is, some have the same bore, so the only real way is to get the crank casting number and see "which one" it is. I've always thought it was mentally unstable how they gave no identifying marks on the engine, but they didn't.
