Rumble,
My reply to your post #6 was referring to the area available for air flow between the high point of the A/C base & the lid. The area of maximum restriction. That is what I thought you were showing in the pics.
A/C filter size & flow through it is another story....
Well, yea, ummm, the amount of flow available through or past the 1-1/2 inch area is making a 90* turn which IMO isn’t a lot of area and to much of a turn within that area for a hard acceleration or WOT. Easy driving, sure.
Hiw much can be passed through there is a good question but I think what I wrote above for what is generally good.
*I Think* we are on the same page? IDK.
IF I could get an honest 4 inches (or better) with a flow through top, I’d be good there. That only works with a hood in the hood and/or a scoop.
