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Send PMWindsor, Canada
Joined: 10/7/2002
Posts: 31
Vette(s): 1970 LS-5 T-Top Bridgehampton Blue / Bright Blue Vinyl
I have a 3 speed auto. It does not seem to shift to 3rd until 3500+ rpms. Is this right or how can I adjust this to shift at lower rpms?
'70 LS-5 Bridgehampton Blue
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Free Member
Send PMBRADENTON, FL - USA
Joined: 8/4/2002
Posts: 669
Vette(s): 1972 convertible 350 auto trans, delux int, air, ps, pb, t/t wheel, pw, 79,000 org miles Rare one year only color
the vacuum modulator controls the shift points. first have it checked for leaks. it is externaly mounted and can be adjusted. but i would have a trans shop do it it is easily damaged if excessive pressure is applied.
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in Forum: C3 Engines, Driveline and Handling
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