From the archive: IROC vs. 5.0

OX1

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The 5.0 was 4 tenths slower than the iroc? Was the mustang driver making a sandwich between shifts? My 89 lx 5.0 5 speed would always beat the local duder’s 350 iroc maro. Didn’t the 86 5.0 have the awful peanut heads?

87/88 notches were the fastest, as they didn't have the 55mm mass air meter in their way. They were 300 lbs lighter than a 5.7 IROC, had about the same power and no real losses through the 5 speed.

86 had the one year E6 heads, small runners, shrouded valves, and true flat top pistons with no valve reliefs.
 

SolarYellow

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The 5.0 was 4 tenths slower than the iroc? Was the mustang driver making a sandwich between shifts? My 89 lx 5.0 5 speed would always beat the local duder’s 350 iroc maro. Didn’t the 86 5.0 have the awful peanut heads?
Since 1987 people have talked the fox body 5.0L (4.9 I guess) as the only object in the galaxy capable of breaking free from the gravity of a black hole. Those magazine tests must be fake news.
 

Rambro

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Since 1987 people have talked the fox body 5.0L (4.9 I guess) as the only object in the galaxy capable of breaking free from the gravity of a black hole. Those magazine tests must be fake news.
I don’t know about magazine tests, but I know the streets were crawling with 5.0 fox bodies when I was a kid. Even at my local track you hardly ever seen tpi 4th gens, the fast ones were carb swapped. When my 89 lx 5 speed was stock motor, 3.55’s, and drag radials, the 5.7 iroc that I used to race couldn’t hang, and it also wasn’t stock. His car had headers, aftermarket tpi runners I think, shift kit and a dumped bullet muffler right after the off road y pipe, crazy loud, beautiful car. He later sold it for a cammed, non mass air, 3.73, 87 lx coupe that ran very good but I remember it constantly surging at idle. Great times, back when 13 second cars were still quick.
 

Rb0891

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I don’t know about magazine tests, but I know the streets were crawling with 5.0 fox bodies when I was a kid. Even at my local track you hardly ever seen tpi 4th gens, the fast ones were carb swapped. When my 89 lx 5 speed was stock motor, 3.55’s, and drag radials, the 5.7 iroc that I used to race couldn’t hang, and it also wasn’t stock. His car had headers, aftermarket tpi runners I think, shift kit and a dumped bullet muffler right after the off road y pipe, crazy loud, beautiful car. He later sold it for a cammed, non mass air, 3.73, 87 lx coupe that ran very good but I remember it constantly surging at idle. Great times, back when 13 second cars were still quick.
Yep, 3.73's, GT40 intake and hoosier quick times was a bad ass ride... until some rich ahole pulled up with a vortech or procharger.
 

Klaus

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Yep, 3.73's, GT40 intake and hoosier quick times was a bad ass ride... until some rich ahole pulled up with a vortech or procharger.

I had a friend that turbod his and ran low 13s with a manual. That was literally mind blowing. I still remember roll racing a brand new c5 while we were cruising around on acid. It felt like we were in the millennium falcon hitting light speed.

It was unreal fast for the time even if laughably slow by todays standards.
 

5.0 Hatch

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In my area, these were never popular and were heavily outnumbered by foxes. This was in the mid 90s. I had a 90 GT at that time running mid 13s and never lost to one. Foxes ruled the streets in my small town until the LS1 showed up. It was game over when a friend bought a new c5z. It was good times back then.....
 

7998

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Yep, 3.73's, GT40 intake and hoosier quick times was a bad ass ride... until some rich ahole pulled up with a vortech or procharger.

Lol, my friend had a '91 GT with a centri. His best time was 11.50's which was stupid fast in the early '90's. He took me for a coke fueled ride on a country road late at night and took that thing as fast as it would go. I can't remember another time in my life I was that scared. He kept disintegrating the T-5 and went through 3 or 4 of them saving up for a built 5-spd.
 

MFE

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Funny thing is most people don't even know that IROC stands for International Race Of Champions and there were other "IROC" cars. Dodge Daytona and Pontiac Trans Am body "nascar style" cars.
In the Detroit area it meant "Idiotic Ragheads Out Cruising"
 

Deceptive

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IMG_4441.JPG


This guy owns a Gen 3 Iroc, Blaupunkt tape deck, Crankenstein Speakers, Van Halen playing, on Cragar SS’s.


If you buy an EV you won’t suffer through high gas prices. - Peter Buttplug
 

Double"O"

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My neighbor had a nice black iroc-z back in the late 80s...really cool car

But the other neighbor had a 6.6L TA
...and well...lol

My cousins best bud...who ironically is my neighbor now (1mile away, country livin lol) still had his 4eye T top fox...i love that car and the bastard wont sell it
 

Double"O"

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In my area, these were never popular and were heavily outnumbered by foxes. This was in the mid 90s. I had a 90 GT at that time running mid 13s and never lost to one. Foxes ruled the streets in my small town until the LS1 showed up. It was game over when a friend bought a new c5z. It was good times back then.....
My town was the same way
Funny thought the fastest mustang in town was owned by a guy who also had a 98 SS...bastard...if he got beat by an out of town car the SS magically showed up 30 mins later...with the 150 shot open and ready
 

ford fanatic

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87/88 notches were the fastest, as they didn't have the 55mm mass air meter in their way. They were 300 lbs lighter than a 5.7 IROC, had about the same power and no real losses through the 5 speed.

86 had the one year E6 heads, small runners, shrouded valves, and true flat top pistons with no valve reliefs.
I owned an 86 and 88 notch back in the late 80's early 90's. The 88 was about a full second faster stock for stock in the quarter.

Gears, exhaust and few other small mods put they 88 into the low 13's. Good times.
 

Deceptive

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Tough day at the office?
Or. Is that the vaccine writing checks you can’t cash?

You must have me confused with somebody else.

I rarely have a bad day at work and I have zero issues cashing checks. Maybe you need to get out of the sun and hydrate.


If you buy an EV you won’t suffer through high gas prices. - Peter Buttplug
 

Rb0891

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I owned an 86 and 88 notch back in the late 80's early 90's. The 88 was about a full second faster stock for stock in the quarter.

Gears, exhaust and few other small mods put they 88 into the low 13's. Good times.
I remember doing headers on a gravel driveway at night. Scared shitless of cross threading.
 

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