390 motor (66 bird)?????

[SIXTSIX]

...Looking for some input...

I am detailing the motor in my 66 Landau. It supposedly
has a 390 in it with only 40 thou original miles. I have the
intake manifold off and checking the hydraulic lifters. One
appeared to be pitted and when I dismantled it, the small
cap and spring remained inside. All of the remaining ones
pulled out with everything intact. With this one faulty
lifter I have been advised to replace with new cam and
lifters.
My problem is, I have a few reasons not to believe
the motor is a 390.
First, when I ordered the doughnut exhaust gaskets
from NAPA, they were too big. I then went to the
local muffler shop and they assured me the gaskets
were for a 390 motor. I just happened to bring
along my heat riser to match a proper fit. They were
much to my surprise, for a 302 motor.
The other discrepancy was the cast number on the
front of block, 352 with an upside down 'L' under
the number. To order the proper cam replacement
I have to know what motor I am rebuilding.
The Vin # shows a 390 C. I. V8 (6Y87Z163896)
....Any comments would be much appreciated...

.........Thanx. Mike (SIXTSIX)

[Harley Eaton]

390's and 428's both have the "352" cast on them.
Why not just measure the bore and stroke. That would be POSITIVE..../