My 81-300SD flares in first only. I have about 18" at the main booster line and about 12" at the line that goes to the tranny from the 3 prong connector. I checked the vacuum at the control box on top of the valve cover and I get about 12" there. I don't seem to get anything at the short hoses inside that box.

I have read the numerous posts and I couldn't find anything on first gear flaring.

Any info would be appreciated as this is my first tranny attempt.

Thanks, Don

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