1966 L36 vs. L72 Instrument Cluster Label Differences?

[James W.]

Does anyone know what the two letter label designation is on the back of the instrument cluster on an L36 and a L72 427 in 1966?

Thanks,

James

[Robert P.]

my Sept built L36 has LD on the label
Bob

[Mike T.]

James - Here's a pic of the backside of my 66 L72s cluster.
Mike T - Prescott AZDSCN5557.jpg

[Jack M.]

I believe these are korrect for 1966 Corvettes - RED letter decals:

LA - 5,500 tach & 60# oil - Base
LB - 6,500 tach & 80# oil - L72
LC - 6,000 tach & 60# oil - L79
LD - 5,500 tach & 80# oil - L36

[James W.]

Thanks to all who responded, that's the info I needed.

James