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Re: TH350 shift point question
The vacuum modulator controls the shift points and your low vacuum could be causing your issue. The other item to check is th governor. If you cannot fix the vacuum then try to adjust the vacuum modulator. Also, make sure the kickdown cable is free and adjusted properly.
Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end
1965 Impala SS 400 sbc, Muncie rock crusher
1966 Impala SS 396 bbc, TH 400
1969 El Camino, 350 sbc, TH 350
1971 Snowplow built on a Blazer frame
1972 GMC Short bed, stepside, TH 400, 427 BBC
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