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#7044270 Idle Tube & Idle Down Channel Restriction Measurements

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Brian B.:
Would anyone be able to confirm what the factory measurements for these openings should be? Using numbered drills I've measured the following on mine as close as I could but not certain if these have been altered in the past.

Idle Tube:  .0465"  Drill #56
Idle Channel Down: .052"  Drill #55

Thank you.

Kenth:
An original 7044270 has .038" idle tubes and .057" down channel restrictions.

Brian B.:
Thank you Kenth.  My engine with no VIN stamping came from the Pontiac Engineering garage during the '74/'75 time period and I now wonder if they may have changed the carb internals. Hmmm.

Brian B.:
I could have made an error when measuring too.  If I have the carb apart again this Winter, I will re-measure.

Brian B.:
As a follow-up and point of clarity....the idle tube for my carb is .038".  I measured incorrectly the first time and re-checked.  Sorry for any confusion.

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