Convert that Olds V8 to EFI?
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5.0 and 5.7 Discussion, Convert that Olds V8 to EFI? in Cadillac Engine Technical Discussion; http://grimers.com/vehicles/olds/403efi/index.html...
  1. #1
    N0DIH's Avatar
    N0DIH is offline Cadillac Owners Master
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    Convert that Olds V8 to EFI?

    http://grimers.com/vehicles/olds/403efi/index.html

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    Gwokable is offline Cadillac Owners Fanatic
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    Re: Convert that Olds V8 to EFI?

    The point is?

    EFI won't give you any real advantage over a qjet that's setup right, save for better intake flexibility.

  4. #3
    The Ape Man's Avatar
    The Ape Man is offline Cadillac Owners Connoisseur
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    Re: Convert that Olds V8 to EFI?

    It's always great when someone has the brains to do a swap like this without spending thousands. Nice pix and writeup too. Thanks for posting that!

  5. #4
    90Brougham350's Avatar
    90Brougham350 is offline Cadillac Owners Connoisseur
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    Re: Convert that Olds V8 to EFI?

    Quote Originally Posted by Gwokable View Post
    The point is?

    EFI won't give you any real advantage over a qjet that's setup right, save for better intake flexibility.
    EFI has great advantages over a carburetor. The cold-weather drivability is far better, the milage increases, the powerband is flatter and has no flat spots, EFI doesn't need to be rebuilt after 100000 miles, don't have to pump EFI to start it, the list goes on and on.

  6. #5
    N0DIH's Avatar
    N0DIH is offline Cadillac Owners Master
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    Thread Starter

    Re: Convert that Olds V8 to EFI?

    I am a Q-Jet fan, so I would likely leave it. My 85 Cutlass 350 with a 307 CCC system rivaled EFI for drivability and manners. And 23.5 mpg to boot... (THM200C/2.14 gears) I went to 2.56's and no OD and dropped it to 21.5 mpg.... Even with a 204/214 cam (which was waaay to big for that low compression) mpg didn't drop below 21.5. City held with the 307 at 17.5-18 mpg.

    I am a fan of a good worthy project. An EFI Olds V8 307 would be a nice ride. I was looking at a 7747 PCM and TBI to go with my THM200 4R swap to go with my 3.23's. I never did get the time to do it. I have the THM200 4R still, and ended up giving away my 3.23's (7 5/8" too, wish I didn't....)

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