It's also a smaller displacement, requiring less air flow. Trick Flow Box R is the same design as used on the Tickford 347's although more refined. You can also get any aftermarket Ford 80mm throttle bodies to suit so you can keep your stock throttle cable and throttle position sensor. Such as Trick Flow, Edelbrock, BBK etc etc. Or even a 90mm tb from Accufab.
I have a 302 with Trick Flow (TFS) "Twisted Wedge" alloy heads, TFS stage one cam, TFS "Track Heat" intake manifold, TFS 1.6r roller rockers, TFS billet fuel rail kit, FRP 24lb injectors, Tickford 70mm TB, 73mm Cobra MAF, under drive pulleys, Crane HI-6 ignition/LX92 coil, Magnapack twin 2.5" exhaust. It's sitting just shy of 400hp. I would love to go to a 331 stroker, however I can't afford to upgrade the transmission yet so that will just have to wait! Check out this guy's super charged 347. you may need to register on the site before you see the pictures.
http://www.fordmods.com/the-garage-f53/xtt909-update-t66227-180.html
just cant wait to drive it, been off road for nearly a year.
I havnt driven mine for 3yrs. Hahahaha