Is the Adapter Plate OK?

[Richard Dobson]

I bought a 396 engine with a Edelbrock #1411 750 carb with a square bore adapter which is on the stock Chevy 3883948 intake manifold. The stock manifold is for a Quadrajet carb. Edelbrock spec's out a Quadrajet adapter plate #2696 for the 1411 on this manifold. I just want to get the engine running to see if it is OK, then later in the future I plan on putting on the proper Edelbrock intake for this carb. Will I be OK to use the square bore adapter for awhile? Will this cause poor performance? The PO said he had 10K on the engine after a rebuild. Thanks for any help.