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  • VicCrownVic
    replied
    Definitely more work than is involved with the fuel pump upgrade this thread covers. Although an '89 TC would only involve physical modifications to mount the tank (including fuel line reroute) and the '90+ pump/sending unit electrical connector.

    Correct, the resistance range runs opposite for '90+ compared to '89-.
    Also for '88- digidash the high resistance value is something like 220 ohms instead of 160 for '89 TC and all '90+.

    http://www.grandmarq.net/vb/showthre...l=1#post785194

    From that post:
    Based on EVTM for '89 CV/MGM and '91 CV/MGM and some prior research

    For Analog clusters on '89 and down panthers (excluding '89 TC):
    Low fuel = high resistance = 60-86 ohms
    Full fuel = low resistance = 8-12 ohms.

    For all clusters on '90+ panthers (including '89 TC):
    Empty = 15 ohms
    Full = 160 ohms

    IIRC, '88 and down TC with digital cluster is something like:
    Empty is about 15-20 ohms
    Full is about 220ish ohms
    Last edited by VicCrownVic; 07-05-2017, 11:29 AM.

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  • kishy
    replied
    On that point about putting newer tank in older box, I'm eventually planning to some-sort-of-EFI swap my '83 and was planning to test fit the 97 Vic's fuel tank in it.

    Sending unit issues being a hurdle to jump at a later time, of course (isn't the resistance range backwards between the 89 and 90 switchover?).

    Logically, the tank should fit the spot. If there is a discrepancy between strap length, the question is if it's because a) tank shape differences, b) strap mount relocation, or both.

    (edited out tank strap application info as it was misleading)
    Last edited by kishy; 07-05-2017, 11:21 AM.

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  • DerekTheGreat
    replied
    Ah, more work than it's worth...

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  • VicCrownVic
    replied
    Tank straps are different length and I think possibly also different mounting locations. Fuel pump is on the front of the '90+ tank instead of the back so fuel lines would need to be rerouted. Then you get into the fuel sending unit which will require at least a '90+ antislosh/low fuel module, or possibly a '90+ cluster, or modify the '90 sending unit to the '89- resistance range (I'm not really sure what the best way to handle this detail would be, more research needed). Now, with an '89 TC none of the sending unit monkey business applies. Although all '89- Panthers will still require the '90+ electrical connectors at the tank.

    I'm sure I'm missing some details but, having never done such a swap, that is all I can think of. I don't think it would be an easy task but I do think it would be doable.

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  • DerekTheGreat
    replied
    Can a dude swap in a '90+ tank in an '89 & down car?

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  • VicCrownVic
    replied
    Yep, '90+ are different from '89-down. Much easy to work with when it comes to fuel pump upgrade.

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  • Not_your_grandpas_marquis
    replied
    I just upgraded my 1990 MGM fuel pump to a walbro 190lph and it was a completely different pump mounting system then shown. It was just slip the pump out of the rubber dampner and replace. The walbro was a bit longer but a new shorter hose fixed it. If I figure out how to post pictures from my phone I will post a picture up.

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  • merc91
    replied
    Aeromotive stealth line of pumps are awasome... Turbine style vs gear so very quiet and essentially nothing that can wear/go wrong. They'll feed 600hp at our 40psi and have lower amp draw with being the same size as the walbro units we have. Not being a gear pump they work very well with a pump in series if ever needed.
    Running 2 myself (2nd only kicks in at wot) and love them.

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  • turbo2256b
    replied
    Originally posted by Bobcat View Post
    You made the same mistake that he initially made, using the radiator hose.


    My Walbro 255 was DOA, was good because I would've ended up killing it regardless. (Too much pump for too little steam, since they're for 500hp engines.) So now I'm using a factory replacement and I'll upgrade it in the future. The filler neck hose is a great idea. I'll surely do that instead of wrapping a hose clamp around it.
    Not positive I USED THE RAD HOSE MYSELF IT WAS SO LONG AGO. Pump still runs it is a walbro FMS pump never had any issues. Guessing walbro makes the holly in tank pump dont know who makes thier other pumps for carb apps

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  • Bobcat
    replied
    You made the same mistake that he initially made, using the radiator hose.


    My Walbro 255 was DOA, was good because I would've ended up killing it regardless. (Too much pump for too little steam, since they're for 500hp engines.) So now I'm using a factory replacement and I'll upgrade it in the future. The filler neck hose is a great idea. I'll surely do that instead of wrapping a hose clamp around it.

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  • packman
    replied
    I hope so too. I have had a Holley Red pump on Putter Project for 3 years now without problems. THough, that truck doesn't get driven much anymore. The 292 seems to be okay with the Holley. It's very noisy though; you can hear the pump over the failing muffler. That was my first fuel system upgrade/install.

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  • turbo2256b
    replied
    Hope that Holley pump is better than the 3 or 4 I have burned up in Creamy. They were external pumps for carbs. they only lasted a few months. Tried a couple different versions of the 140 / 150 gallon ones and one blue pump that didnt supply enough fuel. Sold that one to a friend cheep and it burned up in short order. They always claimed it was dirt in the fuel. Brushes were burnt down to the wire fuel system at the time was new ATL fuel tank new lines all the way to new carb Running a Mallory now for years.

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  • packman
    replied
    The fuel filter doesn't snap in like it did when I first pushed it into the bottom of the pump; but it's still tight. So here are pics of the finished/revised pump.





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  • turbo2256b
    replied
    http://www.grandmarq.net/vb/showthre...l-pump-install

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  • gadget73
    replied
    That would do it. Didn't consider that either.

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