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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, fuel injected 350 into 85 coupe in Past Cadillac Vehicle Discussion; Thats what I really wanted to do but I cant find info on getting it done anywhere....
  1. #16
    jak89 is offline Cadillac Owners Member
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    Re: fuel injected 350 into 85 coupe

    Thats what I really wanted to do but I cant find info on getting it done anywhere.

  2. #17
    sven914's Avatar
    sven914 is offline Cadillac Owners Connoisseur
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    Re: fuel injected 350 into 85 coupe

    It's not that hard to do it yourself.

  3. #18
    brougham is offline Cadillac Owners Master
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    Re: fuel injected 350 into 85 coupe

    You can use a 93 Fleetwood too for the drivetrain. Same car as 91&92 but different body sitting on it. For that matter you can also use a Caprice or Roadmaster from the same years and they are cheaper and easier to find.
    They only used feedback carburetors to meet emissions for the 307 years. If you're going carb route you'd be better off just getting a normal one anyway because the computer setup is designed for whatever engine and body it's in. Start mixing parts and you can can run into problems. Not to mention the extra wiring involved.

  4. #19
    outsider is offline Cadillac Owners Connoisseur
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    Re: fuel injected 350 into 85 coupe

    i really wanna swap an LT1from a 95 into my 87...haha that would be sick.

  5. #20
    jak89 is offline Cadillac Owners Member
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    Re: fuel injected 350 into 85 coupe

    Quote Originally Posted by brougham View Post
    You can use a 93 Fleetwood too for the drivetrain. Same car as 91&92 but different body sitting on it. For that matter you can also use a Caprice or Roadmaster from the same years and they are cheaper and easier to find.
    They only used feedback carburetors to meet emissions for the 307 years. If you're going carb route you'd be better off just getting a normal one anyway because the computer setup is designed for whatever engine and body it's in. Start mixing parts and you can can run into problems. Not to mention the extra wiring involved.
    What do mean by I'd "be better getting a normal one anyway", It would be better to get a already carbed motor, right?

    So far I've located a carbed 350 for a decent price but I'm gonna be a little more patient and see what else I can find.

  6. #21
    jak89 is offline Cadillac Owners Member
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    Re: fuel injected 350 into 85 coupe

    Alright so I finally found some solid info for wiring with a manual carb I think. here it is

    As far as wiring all you will need is the wiring from the altenator, oil pressure switch, coolant temp switch, ditributor,and the starter and battery wires. You can remove everything else.




    now I just need to now what to hook these wires up to?

  7. #22
    sven914's Avatar
    sven914 is offline Cadillac Owners Connoisseur
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    Re: fuel injected 350 into 85 coupe

    Alternator goes to the battery. The oil pressure switch is connected directly "STOP OIL PRESSURE" warning lamp. The coolant temp lamp is wired directly to the "COOLANT TEMP" lamp. The distributor would be connected to the battery, the spark plugs, and a manifold vacuum supply. The battery Positive wouldn't need to be moved and the starter will connect to the factory ignition switch.

    The distributor is the only thing that your car has (from your list), which is computer controlled. Everything else is just plugged into what ever it controls and it maintains/monitors the system by itself. For the most part, you would be able to reuse the car's factory wring harness.

  8. #23
    jak89 is offline Cadillac Owners Member
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    Re: fuel injected 350 into 85 coupe

    Why thank you, that clarified a lot. I found a 4 bolt main 1980 350 all it needs is a carb. its a four barrel motor. Can someone recommend a good series of carb to put on it?

  9. #24
    jayoldschool's Avatar
    jayoldschool is offline GM RWD V8 addict
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    Re: fuel injected 350 into 85 coupe

    Edelbrock 1406. You would be better off getting an 87 or later roller cam small block, btw.

  10. #25
    sven914's Avatar
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    Re: fuel injected 350 into 85 coupe

    I would try to find a Rochester. A carburettor for a 350 or a 403 will work and a refurbished one isn't that expensive on eBay

  11. #26
    cadillac kevin's Avatar
    cadillac kevin is offline Cadillac Owners Master
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    Re: fuel injected 350 into 85 coupe

    sven, I think hes referring to the chevy 350, not the olds 350.

    jak, get a 600 cfm rochester 4 barrel and you'll be ok. thats what the higher output 350s came with (high output is a relative term though)

  12. #27
    sven914's Avatar
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    Re: fuel injected 350 into 85 coupe

    But a carbed Chevy won't fit right. There isn't enough clearance between the frame and fuel pump.

  13. #28
    cadillac kevin's Avatar
    cadillac kevin is offline Cadillac Owners Master
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    Re: fuel injected 350 into 85 coupe

    isnt there a way around that?

  14. #29
    sven914's Avatar
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    Re: fuel injected 350 into 85 coupe

    Two options: take a sawzall to the fame or get an Oldsmobile engine.

  15. #30
    csbuckn is offline Cadillac Owners Master
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    Re: fuel injected 350 into 85 coupe

    The 4100 is Fuel injected, right? Just run a fuel regulator near the carb and you should be good. If you do need a pump, put an electric one on the frame close to the tank.

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