The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

Kenfuzed · 10-15-2021, 01:54 AM

Is the High/Low vacuum switch solution still a good option, or did you find this to be unacceptable? I am in the process of putting a new engine and rewiring much of this. My truck is an 84 but since it was a California emissions model it had an ECM and most of the vacuum devices were already removed by the PO. I'm trying to set this up to use a vacuum trigger.

I also noticed your solution does not use the 4th gear oil pressure switch that so many earlier setups used.

10-15-2021, 01:54 AM	#53
Kenfuzed Registered User Join Date: Jun 2014 Location: Glendora CA -> Tampa FL Posts: 587	Re: 700R4 TCC Wiring Is the High/Low vacuum switch solution still a good option, or did you find this to be unacceptable? I am in the process of putting a new engine and rewiring much of this. My truck is an 84 but since it was a California emissions model it had an ECM and most of the vacuum devices were already removed by the PO. I'm trying to set this up to use a vacuum trigger. I also noticed your solution does not use the 4th gear oil pressure switch that so many earlier setups used. __________________ 1966 C10 Short Fleetside 1988 Sportster, 2008 Street Glide Ken's 1966 C10 build "Red Ale" Follow on Instgram: @cv_performance https://instagram.com/cv_performance Harley Performance Parts: CV Performance (Harley related) Enjoying the ride!