LD4B intake on a 1969 340CID

The car I just purchased has an LD4B intake on the otherwise stock 340. Will the use of this intake cause a power lose on this engine or is an ok intake?
I have heard the LD4B is designed for the 273 - 318 engines.
Should I be in a hurry to get this intake off the engine?The cam should be stock ,same with the converter and probably 323 gears as far as I know . Any comments welcome .

I dont have the car here yet to test it and was just curious about the intake setup. Thanks
Author: admin