Carburetor Question - Is this a good call?

yellow rose said

From the above picture, that intake looks like it takes a square bore carb, like most Holley and Carter/Edelbrock carbs.

That adapter if for adapting a Thermoquad or Quadrajet to a square bore manifold.

Even if the secondary bores on the intake are SLIGHTLY bigger than the primary bores, that is still considered a square bore manifold and the adapter isn't needed.

Click to expand...

After some research thats what it seems - it looks like whoever put this on used exactly that, a Quadrajet adaptor. I took some pics of it just now when fetching the horn #'s.





If you look at the first picture, thats the bolt pattern for the intake manifold. The outside studs are what allows the holley to bolt on. Second picture is what was against my manifold which is absolutely incorrect. I need square bore to square bore adaptor plate. My Holley will not bolt to my intake without it.

The horn numbers are 80457-6 and 2706 under that.

The NGK plugs are the G-Power platinum plugs stock "GR4GP 2763"