Kind of worried about clutches. Can you use a combination of switches for the lock up? Thanks
2004R brake light switch, vacuum, or toggle switch for OD lock-up?
Jim_66SS
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I use a cruise control brake light switch with the lock up wired through the CC side. This is to ensure the converter unlocks when the brakes are applied. A 4th gear pressure switch inside the trans locks the converter any time the trans is in 4th gear. If the trans downshifts from 4th gear the converter unlocks. When going up through the gears and the trans shifts to 4th, about a second later the converter locks.
Thanks, this is how I want it to work. So anytime the trans downshift from say 4th to D,etc the converter unlocks. My friends also thinks I should put in a vacuum switch to protect the converter clutches when applying more throttle thus losing vacuum.
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Vacuum switch will unlock when off the gas, as well as heavy load. Hooks to ported.
I think I only have manifold vacuum. Is that a problem?
I think I only have manifold vacuum ( 66 winter intake, 66 holly carb). Is that a problem?
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6,401 Posts
Converter won't unlock when you're off the gas.
I use this brake light switch with the no/nc pins : STANDARD MOTOR PRODUCTS SLS159 Brake Light Switch | RockAuto
If vacuum is a no go for you then you can use this with your mechanical speedo... a little pricey but works like a champ
B&M 70244 B&M Converter Lockup Controls | Summit Racing
B&M 70244 B&M Converter Lockup Controls | Summit Racing
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