800cfm on mild 360 ?

My experience with the Ede 750’s has always been between a best of “meh” to downright “sucks”.
The 600’s have always been kinda hit or miss, depending on the combo.
I bought a new Carter 9755 right before they disappeared...... made by Weber...... looks just like the Ede.
It was actually a really good working carb.
I took it, and a 750 Ede apart right next to each other.
I didn’t dissect everything...... but the arrangement of the bleeds and tubes in the clusters were notably different between the two.
The Carter arrangement worked...... the Ede arrangement didn’t.

I put an 800 Thunder series on a 511 FAST build...... worked great.

That's part of the problem with the Edelbrock 750's as well as the correct Carter 750's need the correct length primary booster which is longer than the 600/625 primary booster used in the Edelbrock carb.