Patrick, I just found out that we are nearly related.  Yup, your cousin Mike is my neighbor, car hobby commiserater, fellow tool source and all around good bud...even if he is a MoPar guy.  
I just borrowed a "pickle fork" from him for some front end work on the Heap and he mentioned that you had posted this morning.  He had mentioned that you were recently "hooked" and were embarking on a life of frustration, confusion, and skun knuckles along with moments of extreme satisfaction, pleasure, and pride. 
So, welcome first to a great hobby and one of the most educational experiences you'll have.  And, welcome to this forum.  I think you'll find the quality of the information here second only to the quality of the people. 
I see you are in the Houston area and you couldn't be better placed for being in a nest of Mustang folks. I'm sure a number of them will be chiming in to welcome you to the gang.
And if you can, you are cordially invited to join the fun at our annual Bash.  This year we will be in Clinton MI and you can read all the info at the top of this forum and also check the Index and read the Bash Forum.  If you can make it I guarantee you and your wife (sig.other) will have a good time and meet a great group.  (Not required that you drive the 'Stang.  We have a number of folks who "bring the Kia" every year.  So, just be there.)

Wish I was more acquainted with the Fox cars but I'm sure you'll get what you need from others.  But reading the numbers you posted, I wouldn't be surprised if that car had be given a later engine possibly from a truck or maybe a Crown Vic, Marquis, or TC.  I betting truck though as that might explaine the E7TE heads and possibly the crank.

Again, Welcome.

BB
 

Last edited by Bullet Bob (1/27/2019 4:36 PM)

I believe the "Standard" 5.0 as used in the CV and TC had dished pistons and bigger combustion chambers.  At least, the core I pulled from an 89 TC did.  IIRC the heads were E7SE. 

BB

nicely done BB.....
 

I must agree with MS on this one.  If they converted the car to mass air they gave you the uber hookup. 

I've had to do the same thing for a lot of stuff.  Parts availability has generally been good, but some stuff is simply not available.  I replaced the fuel and brake lines with stainless lines for example, and though the lines are easy to get no one makes clips for them.  So I bought some sheet stainless, a bench top metal shear, and made the tooling to exactly duplicate the factory clips in stainless. 

My car isn't going to be a strict restoration by any means.  My friends and I had and raced these cars when they were still newish.  I learned a lot about what the cars did well and what they didn't.  I knew the stock brakes for example had to go, and one of my first decisions was to run '94-'04 Cobra brakes on all 4 corners.  The stock rear suspension leaves a lot to be desired, so I chose a Maximum Motorsports panhard rod and LCAs.  Engine wise they ran pretty good, but in a day when typically 4 cylinders are pumping out 200HP stock a 225HP V8 just doesn't sound all that impressive.  So I'm building a 5.0 based 331 stroker with AFR heads that should make more like 425HP NA, and on spray I could push the limits of the stock block.  Drivetrain breakage won't be a part of my life with this car, so I'm upgrading the guts in the T5 and built a 31 spline 3.73 geared 8.8.

On the outside I'm running Cobra R wheels and converted to 5 lug.  Otherwise its going to look basically like a stock '93 Cobra.  I always liked the look of the Cobra best.  I thought it solved the problem with the GT looking like it had a tank @$$.  All my bumpers, spats, etc. were junk anyway, so since I have to buy it one way or the other I'm going with the look I really like.  Exterior will be black, with a smoke gray interior. 

Hopefully by the end of the year I'll be pretty close to it being driveable.  I'm working on the last details of the engine build now.  My tranny parts are all ordered, so that's the next assembly I'll complete.  The undercarriage and rear end of the car is done.  I'm waiting on warmer weather to spray the engine bay, and then I can put the front end back together, engine in, etc.  Not bad considering I started this project about two years ago, and we had another kid during that time. 

Keep me in the loop with your project too.  I've been restoring cars for over 25 years now of all makes and models, but the Fox cars earned a special place in my heart. 

Actually the 86 5.0 was an oddity. The 85 5.0 used forged flat top pistons with valve reliefs and the heads were basically carry overs from  the 77 and later Windsors. The heads all had 69CC chambers. 1.78” intake and 1.45” exhaust. This head was used on both 302/5.0 and 351/5.8 with the only difference being the size of the head bolts. For 85, a slight change to the casting was done to allow removal of the roller tappets on 5.0 motors.

The 86 5.0 used a 1 year only head and piston. The piston was flat and had no valve reliefs. The heads had heart shaped combination chambers along with a unique intake port that had a swirl shape. The intake plenum and manifold were also unique for 86 on the Mustang. They had smaller diameter runners. In 87 Ford went to the truck E7  head because it flowed a lot better. They had 4 reliefs in the piston and the runners were enlarged on the plenum and manifold. Power went from 200 hp in 86 to 225 in 87.

Huskinhano wrote:

Actually the 86 5.0 was an oddity. The 85 5.0 used forged flat top pistons with valve reliefs and the heads were basically carry overs from the 77 and later Windsors. The heads all had 69CC chambers. 1.78” intake and 1.45” exhaust. This head was used on both 302/5.0 and 351/5.8 with the only difference being the size of the head bolts. For 85, a slight change to the casting was done to allow removal of the roller tappets on 5.0 motors.

The 86 5.0 used a 1 year only head and piston. The piston was flat and had no valve reliefs. The heads had heart shaped combination chambers along with a unique intake port that had a swirl shape. The intake plenum and manifold were also unique for 86 on the Mustang. They had smaller diameter runners. In 87 Ford went to the truck E7 head because it flowed a lot better. They had 4 reliefs in the piston and the runners were enlarged on the plenum and manifold. Power went from 200 hp in 86 to 225 in 87.

Well, '86 was the first year for EFI, albeit sped density.  I've often found one year oddities on the first year of a particular model.  My '02 WRX had some peculiarities like that.  For example, I had to change around the overflow piping for the radiator when replacing it due to the '02 having had a one year only setup.  Bought the kit directly from Subaru to do it (new hard line, etc.). 

Most of the '86s I ended up seeing had been converted to mass air, and usually also had the '87-'93 front end on them.  I guess at the time the four eyed look was simply seen as dated.  Now I think it adds some distinction, especially with the different quarter windows, etc. of those mid '80s 'stangs. 
 

Actually I didn't know that!  Thanks for the tip!  It makes sense though, vinegar is a mild acid.

If the hard lines are still in good shape, meaning no kinks, dents, rust, or rounded off fittings. I see no sense in replacing them. Flexible lines, most definitely buy new.

I'd never reuse them for the simple reason that I've often seen them fail from in the inside out, not the other way around.  The damage they've likely sustained is impossible to see.  Brake fluid is hygroscopic, meaning it absorbs water, and thus you have a corrosive element inside you braking system.  You really should change your brake fluid every two years to remove water and other contamination.  Very, very few people ever do that.  To me, brakes are something that aren't worth taking chances with.  I replaced all my hard lines with stainless lines so I never have to worry about them again.  The Fox cars are 30+ years old now, about the same age as my '67 was when I started working on it,  A lot happens in 30 years both seen and unseen.  Rust is a devious demon.  What you see is often the tip of the iceberg.