How Much Hp Gain Will I Get From Gt40 Intake And 65mm Throttle Body?

seeing as how the hp boost wouldnt even be worth the cost of new gaskets and tube of silicone much less the cost of a new TB, save the explorer intake do the explorer tb mod and look for a set of low buck heads. with better heads you can boost the 10hp to easily 25-40hp depending on setup.

As someone that once did just a gt40 (tubular) intake on a stock engine with 65mm tb, i say it's barely worth the effort.
If you are expecting any SOTP feel, you aren't going to get it.

How about with headers,exhaust, no cats. E cam, 70mm MAF..

Going from stock intake/tb to gt40 intake and 65mm tb i'll be able to feel it?

I sold my systemax yesterday, cause i didnt want to lose the 10hp/tq lower and might go pick up this explorer setup. + i need the 19lbers it comes with. So i know mine will run better and appropriately leaner vs. My pig rich setup now. (24's stock maf).

I see you searched for existing threads and must be reading up instead of asking the same questions in a new thread.

To me, the MAF, tubing, trottle body and throat of the upper intake need to all be considered as a system leading to the intake valve. At WOT, it will work best as a funnel leading through a Venturi In the throat of the upper intake. It is at least It should be a cylinder of fairly consistent ID, without any wide or narrow spots to interrupt smooth airflow.
Based on that theory, there is not much point in having a TB that is bigger than the MAF or intake. That’s unless you need to change it now, and will need it for future upgrades
An Exploder intake, (especially when the lower is ported and the upper’s throat is ported to match the TB), should make more of a difference with some type of Gt-40 iron heads (that Is what Ford designed the intakes for) or better flowing aluminum heads.
And as far as porting the stock heads, do not do it. Unless you are in a stock appearing class, or there are other class restrictions, It’s not a good use of time or money. Porting E-7 heads is time consuming, and it’s expensive per power return to have someone knowledgeable to do it and get any significant power increase.
My car came with seriously ported Stock heads and intakes. Yes, Two sets. The second set was for the next motor they did not end up building, but was good to see the quality of work that was put in.

So in this case, a bigger throttle body and bigger MAF made a noticeable difference with how responsive the throttle is and it sure seems to breath better at higher RPMS. I am going to install a prepared Explorer when I get better flowing heads. The combo I have is working well now, and that’s something I want to mess up for an increase limited by the heads.