Can anyone identify this Holley carb. Pulled off my 455 & won't be using it on my future driver. Tried searching the many numbers I believe it is a 800cfm Best number stamped near the jets L47802 also what's it worth ? Thx

 

Looks like a Holley 4150 Street HP double pumper.

 

4780-2 can be found among Holley's list- numbers...

 

4780-2 800cfm Should be 1 11/16 diameter butterfly, with a 1 3/8 pirmary and 1 7/16 secondary venturi size

Primary main jets 70, Secondary main jets 85, Primary p.v. 6.5, Primary Nozzle 31, Secondary Nozzle 31