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  1. #1

    Default 1986 dyno results

    My bone stock 1986 5.0 five speed finally saw a dyno today. Final results were 160 hp and 230 tq at the wheels. It was done on a mustang dyno which I've heard gives low numbers but I was still pleased with the results.
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  2. #2

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    Nice stock numbers!

  3. #3
    FEP Member Mgino757's Avatar
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    How many miles on it?
    1985 Mustang GT conv. modified 4180C, Weiand Street Warrior intake, equal length headers, true dual exhaust, 3.55:1 8.8'' rear end, 2003 V6 T5, Ford Racing 10.5" clutch.

    1998 Mustang GT auto. PI swapped. Daily beater

  4. #4
    FEP Senior Member Johnny's Avatar
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    Man, that seems like it's a little shy in the HP range? Weren't they close to 200hp with 285lbs of tq..!?
    1966 Big Block Sport Fury.

  5. #5
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    Quote Originally Posted by Johnny View Post
    Man, that seems like it's a little shy in the HP range? Weren't they close to 200hp with 285lbs of tq..!?
    Sounds about right. 20% parasitic drain seems a bit off but when you factor in 28 yeara of operation then the numbers make more sense.
    '86 SVO *Jenni* 2R Sunroof, Leather (Restoration in Progress)
    '06 GT G2 Vert auto 13.0 @ 105

  6. #6
    FEP Senior Member Johnny's Avatar
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    Yeah I would imagine that it would be lower due to age, but that much? I guess it depends on the miles on the motor and how good it was taken care of all it's life.
    1966 Big Block Sport Fury.

  7. #7

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    Well it's only got 67K on it and it's in pretty good condition so I feel like the numbers were pretty good. I wasn't expecting to be over 150

  8. #8
    FEP Super Member SVT Rob's Avatar
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    That seems pretty low, considering. I watched a stone-stock '91 GT put down 192hp and close to 300lbft of torque, and he had 80k miles on it.

  9. #9

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    Quote Originally Posted by SVT Rob View Post
    That seems pretty low, considering. I watched a stone-stock '91 GT put down 192hp and close to 300lbft of torque, and he had 80k miles on it.
    91 has more horse power and torque due to a different head design than the 86 so that would make sense. They only claim 200 hp and 290 ft/lbs at the crank for this car. I've also heard that mustang dynos are famous for giving lower numbers

  10. #10

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    200HP 285 ft/lbs
    1986 GT T-Top.
    In the middle of its resto...

  11. #11
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    That seems low for a stock 86.

  12. #12

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    Is there a way to tune it to give it a boost?

  13. #13
    FEP Senior Member Johnny's Avatar
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    For sure there is room to make it better. A stock 86 GT should be 200hp with 285tq.

    1986 Mustang GT Specifications
    Powertrain
    Engine 5.0L (302cid) V8 (iron block- 2 Valve Heads sequential fuel injection
    Displacement 302 cid
    Horsepower 200 @ 4000
    Torque 285 @ 3000
    Compression 9.2.1 to 1
    Fuel Premium (91+ octane)
    Exhaust aluminumized steel. LX models featured chrome tips
    Transmission 5 speed T-5 or 4 speed automatic AOD
    Final drive ratio 2.76:1 , 3.08:1. 3.27:1 (automatic)
    Suspension
    Front Independent, modified MacPherson strut with Separate spring on lower arm and stabilizer bar
    Front springs Helical coil, rubber-insulated
    Rear Four-bar link with coil springs on lower arm
    Rear springs Helical coil, rubber-insulated
    Rear shocks gas pressurized hydraulic (4 shocks in total)
    Sway bars front: 26.5 mm, rear 23mm
    Steering power assisted rack and pinion with 15.3:1 ratio
    Front brakes 10 inch rotors
    Rear brakes 9 inch drums
    Wheels 15 by 7 inch ten hole aluminum wheels
    Tires 225/60ZR15 Goodyear Gatorbacks
    Interior Dimensions
    Head Room (Fr/Rr): 38.1/35.5
    Leg Room (Fr/Rr): 42.6/29.9
    Shoulder Room (Ft/Rr): 53.6/52.1
    Hip Room (Ft/Rr): 52.8/47.4

    Exterior Dimensions & Weight
    Curb Weight: 3160 lbs
    Wt. Dist.: 59/41
    Wheelbase(Ft/Rr): 100.5
    Track (Ft/Rr): 56.6/57.0
    Length: 179.3
    Width: 69.1
    Height: 52.1

    Capacity & Volume
    Cargo Volume (EPA/Mfr): 11/10.9
    Fuel Capacity: 15.4 gal
    Seating (Std.): 5
    Seating (Opt.): NA
    Consumer Information
    Assembly Plant Dearborn MI, USA
    Air bags N/A
    ABS N/A
    Price $12,145 - $14,250
    Performance
    Quarter Mile 15.0 @ 92 mph
    0-60mph 6.7 seconds
    Skidpad
    Top speed N/A
    Production
    Total
    224,410
    50,465 (GT)
    GT Colors Black
    Bright Red
    Dark Clove Metallic
    Dark Gray Metallic
    Dark Sage
    Dark Slate Metallic Light Regatta Blue Metallic
    Medium Canyon Red Metallic
    Oxford White
    Sage Beige
    Shadow Blue Metallic
    Silver Metallic
    1966 Big Block Sport Fury.

  14. #14
    FEP Member Mgino757's Avatar
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    I think the numbers are low too, especially for only 67,000 miles. This isn't the 1960's anymore when engines used to be done by 100,000 miles. Remember, the 5.0 HO uses low tension rings, which are said to be easier on the cylinder bores. A 1985 5.0 HO is supposed to dyno 180hp to the wheels. I'd say your power output is 10 hp low. Either you have a factory screw up or you need to do some maintenance to it. When's the last time it had a tune up? You should be putting down at least 170 hp to the wheels.
    1985 Mustang GT conv. modified 4180C, Weiand Street Warrior intake, equal length headers, true dual exhaust, 3.55:1 8.8'' rear end, 2003 V6 T5, Ford Racing 10.5" clutch.

    1998 Mustang GT auto. PI swapped. Daily beater

  15. #15

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    I just got it last year and I was told it received a tune up when I bought it but I'm thinking I might do my own now and see what happens

  16. #16
    FEP Senior Member Johnny's Avatar
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    OK,.this is what I would do, give it a good tuneup, no matter what the PO said. Good wire set, (Ford 9mm or 10mm are good), plugs , fuel filter, PVC, Good cap and rotor (MSD). Increase the timing to 16 with spout out then put it back in. Clean the throttle body and so forth. Run 96 octane in it. Was it converted to MAF,.if not do it if you can? Of course there are aftermarket bolt-ins you could do, like underdrives, A good CAI system. That would spark it up a bit.
    Last edited by Johnny; 06-05-2013 at 05:18 PM.
    1966 Big Block Sport Fury.

  17. #17
    FEP Power Member jleews6's Avatar
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    Those numbers are just about right on for a stock 86. People forget that they were rated at 200 but they will not make that at the tire. 87 to 93 cars made around 185 to 200. The 86 heads and intake really hold them back and back in the late 80s I took many of 86s and did the E7 top end and it makes a big difference on them. You might gain a little by adding a little timing and removing the filter but not much.
    A bunch of 85gt's

  18. #18
    Mike Croke
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    Quote Originally Posted by Johnny View Post
    OK,.this is what I would do, give it a good tuneup, no matter what the PO said. Good wire set, (Ford 9mm or 10mm are good), plugs , fuel filter, PVC, Good cap and rotor (MSD). Increase the timing to 16 with spout out then put it back in. Clean the throttle body and so forth. Run 96 octane in it. Was it converted to MAF,.if not do it if you can? Of course there are aftermarket bolt-ins you could do, like underdrives, A good CAI system. That would spark it up a bit.

    +1. Perform a basic tune-up and bump the ignition timing. However, I wouldn't convert to mass air unless there is a camshaft change in the future.

    Bear in mind the ever changing methods of horsepower ratings over the years make it difficult at times to make useful comparisons. SAE periodically revises the standards and the automakers often use their own internal power ratings for assorted reasons such as advertising and keeping insurance rates for potential buyers down.

    When the 1993 Cobra was in development, it was to be rated at 265 hp compared to the 225 hp 5.0 HO used in the GT & LX at the time. By the time the Cobra hit the showrooms, SAE and Ford had new testing standards and it was re-rated to 235 hp and the GT/LX 5.0 was re-rated at 205 hp with no significant changes.

  19. #19

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    Quote Originally Posted by jleews6 View Post
    Those numbers are just about right on for a stock 86. People forget that they were rated at 200 but they will not make that at the tire. 87 to 93 cars made around 185 to 200. The 86 heads and intake really hold them back and back in the late 80s I took many of 86s and did the E7 top end and it makes a big difference on them. You might gain a little by adding a little timing and removing the filter but not much.
    I have heard that 86 heads are some of the worst you can have because they case the air to swirl and not flow well

  20. #20

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    Congrats on the numbers as long as you are satisfied with them. These foxbodys put down some pathetic numbers compared to modern/today standards. Regardless it's always fun to see where they are at if planning on upping the power.
    1985 5.0 Coupe - will eventually be hated by Ford purists

  21. #21
    FEP Power Member Ourobos's Avatar
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    The 200hp rating is at the flywheel, with 15% loss through a T5, that's about right on. I'd bump the timing up til it pinged, then back it down a degree for a cheap free HP gain. Also the Mustang Dyno is about 20hp less than what a dyno jet would read, roughly. I just had the 2000 Roush put on a Mustang dyno, made 238hp and he had a conversion factor built in, would have been 258hp on a dyno jet FYI. I did make 298tq though which was nice
    1986 CHP SSP Coupe

  22. #22
    FEP Senior Member Johnny's Avatar
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    I agree, some of cars of today are fast as he'll right off the showroom floor. Some pulling mid/high 12s. Even some of the trucks and SUV's. I'm pretty sure one of the Chevy pickups put out over 425hp. Scary when you're driving a less than 200hp Fox.
    Last edited by Johnny; 06-08-2013 at 08:00 PM.
    1966 Big Block Sport Fury.

  23. #23

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    (bumping an old thread...) Curious if this car ever got a bump in base timing, silencer removed, and dyno results reran. The E6SE heads were limiting but they had more compression vs the 87-93. Some of the ECU tunes for 86 were pretty epic in terms of aggressiveness too. T5 trashing and then some.

    The 86ís, like the older and younger siblings respond to throttle body and spacer and intake and header and exhaust changes too.

    The main thing I noticed different between the 89 we had with an A9P and my 86 with the VM1 is the swirl factor was an express route to way less timing advance being beneficial or even tolerated.

    I could run the 89 at 16 with premium and it would act ok. It was too much advance and it would perform better with 14.5 but it put up with it.

    If I set my 86GT at 13.5 degrees and ran it with premium fuel it was noticeably better behaving and quicker than if I went to 14 or more. It also ran intolerably hot in the summer even with a 3 core radiator the moment timing advance inched past 13.5.

    With the 86 running a 58MM TB, ported stock headers, extrude honed intake upper, and a SD friendly cam vs the 89 running E7 heads and BBK headers it was no contest, and the 89 was the clear loser. Going down the street with the 89 in low and the 86 in second running 30 mph then romping on them, the 86 could leave the 89 sitting there looking stupid. The 89 would bury the 140 mph speedometer but thatís about it. The 86 would run that fast and faster in 4th then continue pulling in OD.

    It depends upon the combo. The 86ís often ran away from the 87-93 cars as well as the 79-85 in spite of their heads.
    Last edited by erratic50; 11-09-2018 at 11:28 PM.

  24. #24
    FEP Member 1986Saleen's Avatar
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    The original poster's last login was November 2014... I'd be SHOCKED to get an answer.
    1986 Saleen #145
    46k miles 98% original.

    I'm all for helping the helpless, but I don't give a rat's ass about the clueless anymore.

    Previous: 79 Cobra, 82 GT, 83 GT, 85 Twister, 85.5 SVO, 86 GT, 87 GT, 91 Saleen, etc....

  25. #25

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    Quote Originally Posted by 1986Saleen View Post
    The original poster's last login was November 2014... I'd be SHOCKED to get an answer.
    Me too. Shocked and happy!

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