wondering if anyone has put and air-raid jr. kit on their truck. like a new k&n kit minus the tube and mounts to your carb with a new rod. think of getting that and a tube for a new f150 or something that would work. just to change the look from underneath instead of the stock can or the infamous chrome little air cleaner. so just wondering need some opinions. and pics if you have done ti before

 

Keep the OEM setup and make sure it is fully operational. You can improve on it by modifying a GM or Mopar OEM filter housing that will take a larger filter element. Adding a second air snorkel properly hooked up will help also. The chrome air filters are just for trailer queens. The OEM setup controlled carb icing very well which would otherwise cut performance and mileage.

 

so what are you talking about by using a gm or mopar air cleaner, i guess i just havent seen on and as of fight now i have the stock with just the rectangle box coming out of it and i dont have the aluminum foil hose on it which i am guess hooked to the exhaust manifold to prevent freezing????

 

The OEM Ford unit has a small air filter element in it. You can get Mopar and GM units that will accept much larger air filter elements. I just remove the snorkels on them and put the OEM Ford units on. The aluminum foil and fiber tube connects from the hot air stove around the exhaust manifold to the air cleaner. The thermostatic switch modulates the air flap inside the snorkel to provide warm air to the carb. The black fabric tube connects to the snorkel from an air box under the battery. This brings in cold air from outside the engine compartment to improve performance.

 

What year and engine are you working on?

 

my truck is a 74 f150 with a rebuilt 360 and 37's so would i be able to browse a junk yard around here and what vehicle would i primarily look for.

 

For GM's you have to make sure that they will fit down over the top of the carb.
Some of the housings almost wrap around the carb to make a lower profile unit so trucks are your best bet. Air filter numbers are K&N #'s. Get a K&N catalog to
help you look.

GM CARS= 68-76 Impala, Monte Carlo, 350-454 take E-1500 @12x3.43 GM Motor homes=
1972-79 W/454 take E-1420 @ 12x5.5 or E-1500 GM Pickup= Many 1980-95 W/V8 or DSL
take the E1500 3.5" filter or the E1420 5.5" filter of course the 5.5" is
better Some GMC 70-80 heavy duty trucks took an E-1320 @ 11.37 x 5.56" filter
Many old Chrysler 440's of 68-80 vintage cars and M-homes took a E1540 @ 12.5 x 3.5" filter

None of the Ford stuff is any good since Ford constipates their vehicles in the
intake and exhaust as sort of a poor-boy rev limiter. It saves engines but hurts
performance.

Basically in our old trucks you are looking for a 12x3.5 or 5.5" tall filter if
you have the room. The Chrysler units seem to have a flatter bottom profile that
will fit more carbs but you can get bigger filters for the GM/GMC stuff if they
will fit down over the carb and clear the hood.

When you find a box see if it will take a Motorcraft filter. They are the best
flowing next to the K&N.

Crosses to Motorcraft: E-1320=FA184 E-1420=FA724 E-1500=FA71R E-1540=FA17

 

I basically did what Eric is talking about but I used a "Ram Air Box" air cleaner with two 4" inlets. I run a hose to the front firewall next to the left head light and fabricated a duct from stuff at Home Depot. That gives cold air in the summer. In the winter I plug that one and run a short hose down to the headers.