Threaded Mode
© Copyright 1995 thru 2008 - The Mustang Works™. All Rights Reserved.
MustangWorks.com is designed and hosted by Aero3 Media.
MustangWorks.com is designed and hosted by Aero3 Media.
11-11-2002, 05:57 PM
|
#2 |
|
Registered Member
Join Date: Nov 2001
Location: germantown MD
Posts: 283
|
There is a thermactor passage in the back of each head. They are there for emissions. The GT-40Ps came on the explorers and are are set up to be an emission legal head. Some aftermarket heads don't have the passage and you would have to remove the smog pump and some of the stuff with it.
Having them won't make a noticable change in performance. I you need to stay emissions legal I would stick with it.
__________________
85 GT 4bbl roller cam 2 ch. Flowmasters, O/R H-pipe Performer intake and carb milodon water pump, FMS 9mm wires, aluminum driveshaft, king cobra clutch |
|
|
| Thread Tools | |
| Display Modes | Rate This Thread |
|
|