Motorcraft FA 704 extra capacity air filter

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Motorcraft FA 704 extra capacity air filter

Frank Wyatt
https://www.ebay.com/itm/New-Nos-OEM-Ford-Motorcraft-FA704-Air-Filter-EOTZ-9601-B-1980s-Truck/382748052331?epid=192539742&hash=item591d8fcb6b:g:6k0AAOSwIWxauUyT:sc:USPSPriority!38201!US!-1:rk:2:pf:0
1981 F 150 Custom 300 ci with a fully rebuilt 1968 240 head Carter YFA T-18 3.25 9" rear 2WD
dual gas tanks
1990 Lincoln Town Car 5.0 AOD
Home town Mc Kenzie, TN
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Re: Motorcraft FA 704 extra capacity air filter

Gary Lewis
Administrator
Interesting.  That filter element was only used on 1980-86 trucks w/the 300 six, and it notes "w/unleaded fuel and heavy duty air cleaner".
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: Motorcraft FA 704 extra capacity air filter

Frank Wyatt
It appears to be identical to my filter except for the extra wrap on the outside of the filter itself. I guess that means that I have the heavy duty air cleaner. I believe the "tear drop" air cleaner style that I have has the potential to allow more air flow to the engine with the filter being the limiting factor. That said, I don't believe that my engine will ever see the air flow limit of my air cleaner or the air filter's maximum flow limit.
1981 F 150 Custom 300 ci with a fully rebuilt 1968 240 head Carter YFA T-18 3.25 9" rear 2WD
dual gas tanks
1990 Lincoln Town Car 5.0 AOD
Home town Mc Kenzie, TN
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Re: Motorcraft FA 704 extra capacity air filter

Gary Lewis
Administrator
I'd often wondered which cleaner was the HD one, and I'll bet you are right - it is the tear-drop one.  
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI