Veteran Ford Member
Join Date: Jan 2003
Location: Melbourne, Australia
Re: Engine upgrades for ford six cylinders
Depends what you want to do and how much you want to spend.
If you want to spend say 1000 dollars, your best options would be either 5 speed conversion or extractors and an exhaust.
For cheap mods (I've mostly only done cheap ones), thermofans are a good start. A different cam is useless without extractos and exhaust. A BBM manifold, while good for daily driving, doesn't do anything for top end power.