but thats measuring at the center of the hood over the engine so thats not really the info we are needing :P close tho...

if that is really what it is over it then it must be alot cooler off to the side

 

 

well let's just say underhood air is warmer than the air you'd get thru the OE intake then ..

warm air has less oxygen than cold for a given volume .. your engine runs on oxygen (not air) and fuel .. (this is the whole idea behind 'cold air intake')

if you intake less cold air you can get the same hp/torque/MPG as you can intaking more warm air ..

kinda like I like my women to be low maintenance .. those intakes may be pretty and look good in front of a crowd but I'll take the cold air and low maintenance filter .. I just toss it out and drop in a new one .. no cleaning, drying, oiling, or worrying about over oiling and trashing any sensors .. and mine will perform just as good ..

but, you can decide what you like to do to your motor ..

 

I'm sure you all have seen this, and I know that I've posted it before, but here we go. It's for a 460, it shows temperature change, mpg change, and hp/tq change.

Intake Temperature Comparison

Air Cleaner Performance Comparison

 

I dunno , but those look more like ads for K&N .. ie: the guy selling you something (even if it's the mag that sells ads for the product) has everything to gain by making that product look good ..

also, on Intake Temperature Comparison check the 'note' at the bottom .. +1%HP for every -10*F .. so if your putting out (for easy math) 100 HP , you get 1 HP for every -10*F ..

and on Air Cleaner Performance Comparison the 'optimum configuration' is (surprise) a K&N filter (is this an advertisement?) and the stock air box thermally wrapped (to keep the intake air colder) ..

.. advertisement or real world? .. not really sure .. but they agree with the benefits of cooler air and the stock box ..

edit:

I wonder how (on Air Cleaner Performance Comparison) going from 206 HP stock to 211 HP w/ K&N in the 'optimum configuration' is -4% in HP ? .. (I think some of them numbers is bogus )

 

Well to be fair, the only test done with the paper filer had everything else stock. What it does say, is an insulated stock air box will give you more torque and more mileage that a K&N FIPK system. With all temps the same, it shows that a brand new K&N filter flows better than a paper filter. Which is consistent with most studies. This doesn't take into account that as dirt builds up in the filter, K&N elements quickly fall behind paper elements.

I don't think they were implying that your results would vary if you insulated your air box and used a paper filter.

 

Here's a few pics of the 300/460 intake next to the 302/351 intake

 

what, no 'circles and arrows' .. guess there is no 'paragraph on the back, explaining what each one is' either .. LOL

+1 for anyone who gets the reference ..

 

I would like to know why in Fords infinite wisdom they saddled the 302/351 with the different/inferior intake tube in the first place?......After all Ford is famous for using the same parts for whole ranges of models to save money, why a different part when the 300/460 part serves the best for all?

 

different isn't necessarily inferior ..I'm sure the stock 302/351 intake was in line with the requirements/specs for that motor .. maybe fit / placement with this particular motor .. the 302/351 are more similar with each other than either the 300/460 are with each other or the 302/351 individually ..

we're looking for 'better' .. and will make the necessary 'adjustments' to get it ..

 

I wonder if it could be related to Helmholtz resonance. It seems unlikely, since this is all taking place before the filter, but the 302 351 both have shorter strokes than the 300 & 460.

If they took the time to engineer and produce two different pieces, there had to be a benefit to the company (higher profits/better fleet mpg) greater than the cost to implement 2 designs.

 

It also wouldn't be the first time in history an idiot was allowed to make a decision.

 

Sounds like you have had first hand experience with the Corporate World.

Corporate=idiot.

What is also interesting when comparing these two factory intakes-the 5.0/5.8 has a restriction in the intake tube right as it goes into the air cleaner housing.This restriction makes the tube cross section about half of what the rest of the tube diameter is. Seems unnecessary-perhaps works as a intake noise suppressor.

I too, wonder why Henry made two intake tubes. One good thing about the 5.0/5.8 tube is that it is higher off of the ground and would be better when going thru high water or when entering a body of water at a higher than reasonable speed when driving offroad.

The performance differences between these tubes are most noticeable when driving in cold weather.

And the 7.5 intake tube sure makes it easier to work in the engine compartment. Especially when installing the accessory drive belt. And cleans up the engine compartment visually.

 

I don't know why Ford thought the 302 351 needed a different tube than the 300 460. The tube that pulls air from behind the headlight/grille is clearly a better choice.

 

I suspect that there are two tubes because the 5.0 was the first fuel injected gas engine in the F series and the 5.8 and 7.5 and 4.9 injection came later . Henry realized that the 5.0 intake wasn't as good as it could be and redesigned the tube for the later 7.5 and 4.9 injected engine.