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Thread: 1985 Grand Marquis 2-Door

  1. #41

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    Nice Job!
    Im also looking to install Headers, is this the same as yours? https://www.amazon.ca/BBK-1515-Chrom.../dp/B000CITCX6

  2. #42
    Member sluggish91's Avatar
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    Quote Originally Posted by 1985crownvicltd85 View Post
    Nice Job!
    Im also looking to install Headers, is this the same as yours? https://www.amazon.ca/BBK-1515-Chrom.../dp/B000CITCX6
    Yes, same ones, BBK 1515, 1 5/8th shorties in chrome.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  3. #43

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    Also, does your H pipe bolt right onto the headers?

  4. #44
    Member sluggish91's Avatar
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    Quote Originally Posted by 1985crownvicltd85 View Post
    Also, does your H pipe bolt right onto the headers?
    My h-pipe works and bolted right on because I'm using one that's intended for an 87-93 Mustang. But the stock h-pipe will not work. The bolt holes will not line up properly. The tube diameter is different so the ball and socket ends won't connect properly.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  5. #45

  6. #46
    I'm an air-conditioned gypsy gadget73's Avatar
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    Ford only ever made 2 vehicles, the Mustang and the F150. If you want to work on anything else, you have to get creative and rob parts from those bins.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  7. #47
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    You may need to make custom excaust pipes for your car just keep it in mind.

  8. #48
    Member sluggish91's Avatar
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    Quote Originally Posted by 1985crownvicltd85 View Post
    Yes. I have a Summit H-pipe, but the BBK one will work the same. You WILL have to extend the O2 sensors. I have a CFI car with only one O2, so I had to plug the driver side O2 bung and extend the one wire O2 sensor on the passenger side.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  9. #49
    Member sluggish91's Avatar
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    Quote Originally Posted by Rodentkiller View Post
    You may need to make custom excaust pipes for your car just keep it in mind.

    This is true for those wanting to run tailpipes. I just dumped the exhaust at the mufflers before the diff.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  10. #50
    Member sluggish91's Avatar
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    Click image for larger version. 

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    Pictured is a MAC 1 5/8th equal length I had from another project (a basic standard aftermarket short tube header) lined up next to a stock 1985 h-pipe. Notice how the collector on the header is much larger in diameter, and won't seal or seat into the stock h-pipe properly. Also, notice how the header and h-pipe hardware will not line up, as the header hardware is spaced out a bit wider, and the h-pipe hardware is narrower, as it's intended for exhaust manifolds, and not an exhaust header.

    My dad's 1991 Grand Marquis also had exhaust manifolds, and the same h-pipe (except with four catalytic converters instead of two), so I'm inclined to say this will be the case with all MGM Box chassis vehicles.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  11. #51
    GMN Regular Giraffe's Avatar
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    Quote Originally Posted by sluggish91 View Post
    View from underneath. They torched the h-pipe at the bends to tuck it up as much as possible. Because I used a Mustang H-pipe, it doesn't line up with the crossmember. In this picture they are still in the process of getting everything welded completely. You can see the stock hanger on the right and a hanger they used on the left.
    Attachment 53346
    BBK Headers Passenger Side
    Attachment 53344
    BBK Headers Driver Sider
    Attachment 53345
    Side View of where the Mustang H-pipe hangs
    Attachment 53342
    Another lower side view (theres the dark spot above the h-pipe bend where they torched it)
    Attachment 53343

    I guess if I really wanted to, I could get a longer piece of pipe to widen out the h-pipe and tuck it under with the crossmember humps. Only time will tell if that is necessary.
    As for the results of this mod, I couldn't be more satisfied. The sound is just..... . . . . . . . . . . . . . . . . . . . . . . delightful. Really changed the entire dynamic of the car. I have to say it sounds on par, if not better than my Mustang. This is exactly what I was looking for. Sounds damn good. Now the mean sound is going to match the mean look. Still slow though!
    I have a couple questions for you:

    1. You're still running the stock LoPo heads at the moment?
    2. If so, did you experience much loss of torque with the larger diameter exhaust? I have a complete exhaust system ready to go in my car but have been hesitating at pulling the trigger on the install because of things I've read on here regarding loss of low end torque with the larger diameter exhaust.

    My car is currently a 2.73 non-locker as well. However, I do have a 28-spline locker I grabbed from a junked '94 Mustang GT along with some 3.27 gears that will be going in. If that's enough to compensate for lower torque with a 2.5" exhaust then I'll probably go ahead and install everything so I can get it out of my trunk and garage.

    Quote Originally Posted by sluggish91 View Post
    Yes. I have a Summit H-pipe, but the BBK one will work the same. You WILL have to extend the O2 sensors. I have a CFI car with only one O2, so I had to plug the driver side O2 bung and extend the one wire O2 sensor on the passenger side.
    About how much did you have to extend the sensors?
    óJohn

    1990 Mercury Grand Marquis LS (POTM March 2017 & May 2019)
    1995 Mustang SVT Cobra coupe (cream puff)
    1966 Mustang coupe (restoration in-progress)

  12. #52
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    Quote Originally Posted by Giraffe View Post
    1. You're still running the stock LoPo heads at the moment?
    Yes, heads are stock LoPo heads.

    Quote Originally Posted by Giraffe View Post
    2. If so, did you experience much loss of torque with the larger diameter exhaust?
    I felt the loss of torque, even with a 3.55 gear. I was looking for a certain sound out of this car, so it was worth it for me.

    Quote Originally Posted by Giraffe View Post
    About how much did you have to extend the sensors?
    6-12in. on my one single wire 02
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  13. #53
    GMN Regular Giraffe's Avatar
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    Quote Originally Posted by sluggish91 View Post
    Yes, heads are stock LoPo heads.


    I felt the loss of torque, even with a 3.55 gear. I was looking for a certain sound out of this car, so it was worth it for me.


    6-12in. on my one single wire 02
    Thanks for that info. I may go ahead and install the exhaust after we move. Nice car, by the way!
    óJohn

    1990 Mercury Grand Marquis LS (POTM March 2017 & May 2019)
    1995 Mustang SVT Cobra coupe (cream puff)
    1966 Mustang coupe (restoration in-progress)

  14. #54
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    Quote Originally Posted by Giraffe View Post
    Thanks for that info. I may go ahead and install the exhaust after we move. Nice car, by the way!
    Thank you, always a work in progress. I was in the same shoes as you, should I install or not? I had all my exhaust pieces ready to go already. Decided to just go ahead with the install and I was not disappointed. I mean, yea there is a loss of torque below 2000 rpm, but with only about 4300rpm of camshaft to work with, the loss is clearly evident. I'm sure if I had a cam with 1000 more rpm range, and maybe an intake manifold to match, it would make use of the extra tube diameter. Again, I really was just looking to make it sound cool, and it did that, so I'm happy.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  15. #55
    Member sluggish91's Avatar
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    Quote Originally Posted by P72Ford View Post
    If the transmission you have doesn't have the HI-REV governor, add it to your list.
    The HI-REV governor is included in the Transgo AOD-HP kit.

    Quote Originally Posted by P72Ford View Post
    I would go with a Weiand Stealth intake, if you don't yet have the performer.
    What benefits would the Weiand have over the Edelbrock?

    Weiand Stealth 8020WND
    advertised operating range: idle-6800 RPM
    "long, separated runners for bottom-end and mid-range power, plus a special runner design and larger plenum"
    High Rise Design
    Height: 4.970

    Edelbrock Performer 2121
    advertised operating range: idle-5500 RPM
    "low-rise, dual-plane designs with patented runner tuning and a 180 degree firing order... boosts torque over a wide rpm range
    Low Rise Design
    Height: 4.120

    Quote Originally Posted by P72Ford View Post
    Is this going to be a regularly driven rig, or a weekender?
    Regularly driven but modified cars don't scare me if you know what I mean.

    Quote Originally Posted by P72Ford View Post
    ditch the damn VS carb and go right for a 600 DP. MS, 3200+ stall converter and the 4.10 gear will make it fun to drive
    I like the way you think.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  16. #56
    Member sluggish91's Avatar
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    I found some time this weekend to install some roller rockers I had laying around.
    Click image for larger version. 

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    I was going to use them later this year on my pedestal mount aluminum heads but those aren't ready to go yet, so I figured another little mod would help overall. I really can't tell a difference from a performance standpoint from this part individually, but in conjunction with all the other tinkering I've done, it feels pretty solid.
    Click image for larger version. 

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    These rockers are used but in good condition.
    Click image for larger version. 

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    Ratio is unknown to me. I was able to use the stock pushrods and install without shims, so this leads me to believe they are a 1.6 ratio.
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    Still using the stock valve springs.
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    I pushed it as far as I ever have spinning up to 4500 rpm in 1st manually shifting the AOD. It feels pretty cool, and kinda like it wants to keep pulling. This motivates me to get the Shift Kit and High Rev Gov. installed. I need a higher stall converter. Wanting to go non-lockup and run an aftermarket transmission cooler. AOD is getting some mods soon.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  17. #57
    Member sluggish91's Avatar
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    Default Transmission Cooler Install

    Howdy friends, hope all my Grand Marquis friends are doing well and staying healthy.
    I installed an aftermarket transmission cooler in-line with the factory cooler today.
    Here's how I went about it.

    I acquired a HAYDEN PN:512 "high performance transmission cooler".
    Measurements are 7.5" x 12.5" x 0.725"
    Click image for larger version. 

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    I also needed a 1/4" fitting for the stock radiator outlet.
    Click image for larger version. 

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    I discovered that on a Ford AOD transmission the top line going to the upper port on the radiator flows in towards the radiator and is the hot line. The lower port on the radiator flows out and is the cold line. I left the top line alone. I disconnected the lower line with an 11/16ths wrench.
    Click image for larger version. 

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    A bit of fluid came out, but that's natural right...
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    Some ARP Thread Sealer and we're on...
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    The line coming out of the radiator goes to the top of the cooler.
    The lower cooler lines goes back into the stock return line.
    The stock return line has a female fitting with a hose barb at the end of it, permanently temporary I guess.
    Click image for larger version. 

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    Mounted on the radiator via the little zip tie things that come with the cooler.
    My electric fan was impeding me from getting more than two on there, but it should be alright.
    Also, this picture is upside down.
    Click image for larger version. 

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    Just wanted to share my new found knowledge, as this is my first Automatic car and I'm learning some cool new things.
    1985 2-Door
    CFI, K&N Filter, 1.6 Roller Rockers, BBK Shorty Headers, Summit H-pipe, Hooker Max Flow Mufflers,
    Flex-A-Lite Electric Fan, 3G Alternator, Race Crank Pulley, Bilstein Rear Shocks, SVE Wheels, ET Streets, 3.55 Gear

  18. #58
    The Brown Blob 87gtVIC's Avatar
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    Cool. Not that it matters much... I believe from the factory ford went through the auxiliary tranny cooler first then the internal radiator cooler.


    Good to have a cooler.
    ~David~

    My 1987 Crown Victoria Coupe: The Brown Blob
    My 2004 Mercedes Benz E320:The Benz

    Quote Originally Posted by DerekTheGreat View Post
    But, that's just coming from me, this site's biggest pessimist. Best of luck

  19. #59
    I'm an air-conditioned gypsy gadget73's Avatar
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    factory cooler on my 86 connects out of the lower port on the radiator.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  20. #60
    The Brown Blob 87gtVIC's Avatar
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    Quote Originally Posted by gadget73 View Post
    factory cooler on my 86 connects out of the lower port on the radiator.
    All those year I had it installed backwards then. hmm. I had the special factory bent line to just in the upper hole looping to the aux cooler. oops. All torn out now though. Pondering re purposing the tranny cooler as an additional PS cooler.
    ~David~

    My 1987 Crown Victoria Coupe: The Brown Blob
    My 2004 Mercedes Benz E320:The Benz

    Quote Originally Posted by DerekTheGreat View Post
    But, that's just coming from me, this site's biggest pessimist. Best of luck

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