Cold Air Intake

[jseines]

My motorhome is a 1995 Class-C Ford E-350 with a 460 EFI engine...I have upgraded the exhaust with Thorley headers following the dreaded exhaust leaks and snapped bolts...I am now ready to upgrade with a Cold Air Intake system...I'm looking for advise on options both homebuilt and ready made systems...Thanks for a great forum...John from Henderson NV

[Gjac]

I have a 1996 Class A with a 454 with Thorley headers, FF muffler sans cat and the CAI. The CAI I made from flex Al tubing. Did some experiments with using a 4 in Dia can vs a 12x8 rectangular opening trying for a ram air effect. Saw no difference in performance. I think you need speeds over 90 mph to see any improvement. So I would just bring the intake right up to opening of your front cap. The complete set of mods added a lot of performance. My 40-60 mph time went from 19 secs to 12 secs. This equated to a lot less downshifting on hills, less engine heat, about 80 more HP, but no increase in MPG.

[bob213]

Save your money for fuel.

[carringb]

I used an aluminum drier duct and vent grill on my 94. Worked great. Looked a little funny but worth it.

[Dakzuki]

Be prepared for an increase in intake noise when you install it. Not sure if it applies as much to the E series but I had one on my F250 and it was significantly louder than stock. The up side is it was a pleasant sound for a motorhead like me.

[vulcanman1500]

I made one using a floor vent from a home a/c heat unit . wire tied to my grill , and ran dryer vent hose to my air filter . Can not tell a difference . Banks said theirs was good for about half a mile per gallon . This one cost me about $12 . So I could throw it away and not lose anything .