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Re: TH400 help
Quote:
Originally Posted by Captainfab
The adjustment screw on a vacuum modulator is inside and accessed thru the port for the vacuum hose.
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This. And on a Turbo 400 the modulator is the sole control of shift points and firmness, except for the electric switch for WOT downshifts which most, but not all have.
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Alex V.
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1967 C10 Suburban, 350/NP435, Green/Green, PS, PB, HD cooling, charging, shocks, and springs.
1985 GMC C3500 SRW, Sierra Classic, 454/TH400, white/blue.
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