Originally Posted by
FTE Ken
The title says "5.4".
Shorties are, by default, designed to fit to existing exhaust systems so I think that shouldn't be a problem. Later....
These headers fit the F150 only. They will not bolt to the factory exhaust in the F250 or F350 with the 5.4L engine.
HEADERS CHROME FORD 2004-2008, .4L, 2/4WD, F150, WITH MALE EGR FITTING at Doug Thorley Headers dougthorleyheaders.com
YEAR SELECTED: 2005
MAKE SELECTED: FORD
MODEL SELECTED: P/UP 5.4L
Clear Vehicle Selection
Part Number: THY-221
Product Name: 2004-2008, .4L, 2/4WD, F150, WITH MALE EGR FITTING
Description:
It's a proven, indisputable fact: Dollar for dollar, no other investment will increase power and performance like a set of Doug Thorley Headers!
List Price: $803.00
Features
DRIVE: 2WD & 4WD
PRIMARY/COLLECTOR: 1 1/2" - 2 1/2"
HEADER EXIT: DUAL
Notes 18 - Comes equipped with ERG fitting as standard.
My question would be does the F150 have 2" or 2.5" collectors from the factory? The reason that I ask is because another manufacturer states that their will bolt directly to the OEM exhaust with a 2" collector...