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found very odd carb: late style APT and divorced choke ?

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Frank400:
Just bought an engine (69 GTO YS) and on it is a 17057255.  It is an Oldsmobile carb but just can't find the exact application.  It has a divorced choke and a late model (the good one !) APT system. 

  I measured it and found very odd numbers:

main air bleeds: upper in air horn: .070", lower in main body: .028", yes .028" ???
main jets: 73
primary metering rods: 49k (.026" tip)

idle air bleeds: upper: .070", lower: .070"
idle tubes: .034"-.035" (.033" bit goes in easy, .036" won't go)
idle channel restriction: .039"
idle discharge at screws: .089"
idle air bypass: none

secondary rods: CV
hanger: M

   what do you guys think ?  pretty strange main air bleed (.028"), .039" idle channel restriction (not a lot bigger than idle tube ?)

  I'm thinking this carb could be very nice looking on an old car because of the divorced choke, kind of best of both worlds ?

  Frank.

Ethan1:
 That carb was on the '77 Olds Delta 88 350cid A/T Non-A/C. Stock specs were .073" Primary Jets, 49K Primary Metering Rods, "K" Secondary Hanger and CV Secondary Metering Rods.

Frank400:
It's the divorced choke that amazes me the most, as well as the ultra small main air bleed and kind of small idle down channel restriction...

Ethan1:

--- Quote from: Frank400 on March 24, 2014, 04:44:08 PM ---It's the divorced choke that amazes me the most, as well as the ultra small main air bleed and kind of small idle down channel restriction...

--- End quote ---

 Well, you were curious about what it came in, so I gave it to you.

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