4.0 Engine Mods?
Posting Guru
Joined: May 2004
Posts: 1,343
Likes: 0
From: Higginsville, MO
I run a single inlet/ dual outlet 40 series flowmaster with 3 1/2" tailpipes. It has a nice burble at idle and will definately roar when stood on. No ricer sound at all. Just a nice mellow tone when cruising and a roar when floored. I had mine installed at a local shop for $280.
Senior User
Joined: Mar 2004
Posts: 106
Likes: 0
Originally Posted by mcoom00
Any single mod may not make a noticable difference...if they are all done at one you will notice it. If the guy with the mustang didn't feel a diffence with " JUST [my emphasis] a catback/chip/and especially a cold air intake", something was hooked up wrong, the car was tired to begin with, parts were not good, or something. Keep this in mind tho: the 5.0 hasn't been made in that car in about a decade. If you get a new or recent ranger, you are going to have much more computer involvement, and therefore much more potential for performance gains by tuning the computer.
I'm very adverse to the 5.0L's...I'm a very avid member on stangnet.com and corral.net (a total of 6000 post between them) and a member of a few car clubs (all modified)...so I'm very aware of dynos/power mods/etc...
Anybody got a dyno or even just a SOTP review is good to me...:nice:
Postmaster
Joined: Aug 2003
Posts: 2,873
Likes: 0
From: St. Peter
Hey, what are some good mods for a 5.0? I'm building one up for my F150, which operates on the speed density program. I want to convert it to mass air flow, say i do this, what has to be done when i put in a cam and larger fuel injectors? will i need an aftermarket MAF, or can i get a chip burned for it that will take care of these problems, because i dont think you can get chips burned for the speed density PCM's
Senior User
Joined: Mar 2004
Posts: 106
Likes: 0
Originally Posted by Peter94
Hey, what are some good mods for a 5.0? I'm building one up for my F150, which operates on the speed density program. I want to convert it to mass air flow, say i do this, what has to be done when i put in a cam and larger fuel injectors? will i need an aftermarket MAF, or can i get a chip burned for it that will take care of these problems, because i dont think you can get chips burned for the speed density PCM's
I know on his 86 I don't believe he has any valve reliefs in his pistons so that limits the head and cam selection. The only ones that would be a better fit for his truck is TrickFlow Twisted Wedge heads because of their positioning of the valves in that actual chamber. I would convert to MAF for sure because it will learn your new cam and deal with it better than a speed density controlled vehicle would. You will need larger fuel injectors if you get a bigger intake/heads (24lb would be perfect IMO) even with a cam. They sell MAF conversion kits that come with a MAF/chip/and all for under $400 bucks I think...but I would hate to give you to specific of info on a truck based combo...because I'm not familiar with that...just the stangs...I wouldn't know would be good for you and what your goals are...
Good Luck with it though
New User
Joined: Apr 2005
Posts: 9
Likes: 0
From: Clarkston, WA
I have a 99 4.0 custom exhaust upgraded to a 2.5" diameter and Gibson muffler dumped before the rear tire. Night and day difference. Sounds much closer to a v8 than a v6 at all rpms but very, very tolerable on the hiway. My best friend is a chevy man but loves the way my Ranger sounds.
