4.6l tech

I’m ready to shoot this hoss. Started running rough / hard to start two weeks ago on long trip. Had several misfire codes, which were resolved with help of dealer…replaced all cops and plugs, and carbon vacuum. Dealer said intake was full of carbon. Ran fuel cleaner through as well. Still...

2003 Mustang GT 4.6L When do I need to replace my clutch? I currently have about 88,000 miles on the original stock clutch. The motor is stock and I'm not really having any problems with the stock clutch. Should I replace it anyway or wait for indications it's about ready to give up the ghost or...

:headscratch:Ok here is the deal... i race...not show the hp output on my car... i want to know what type of supercharger is best out of the twin screw, eaton m112, or centrifugal unit??? i dont want lag... form what i hear at the track i go to people with centrifugal unit has lag untill they...

!st run today 14.52 @96 mph before engine swap i ran a ugly 15.3..... pi head and intake is well worth it get it if you can and if you get the whole motor do not hard to do i did it on jack stands in my driver way....

is it worth it i got the motor for 1000 and im doingit on jack stands lol in my drive way

i have a 98 gt with pi heads and intake want to put a supercharger on it but do things slowly, do i have to flash my comp and is it ok to go with 42# before i put the supercharger on it:confused:

I have a 2004 GT automatic that just ate its 4th water pump. the car only has 40,000miles on it. any ideas why this is happening