700r4 torque converter lockup - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skysoldier173rd · 07-28-2010, 10:10 PM

I'm using a 86 GMC as a donor vehicle for the 305 and overdrive trans 700r4. I have been told the vacumn/electrical switch for the converter lockup is located on the firewall of the truck. Well, there are several things on the firewall with vacumn lines and wires, and I don't know which one is it. Obviously, i want to move it when the motor and trans come out, so i want to be sure i have the proper item. Does anyone have a picture of the switch?

07-28-2010, 10:10 PM	#1
skysoldier173rd Registered User Join Date: May 2010 Location: jackson, michigan Posts: 246	700r4 torque converter lockup I'm using a 86 GMC as a donor vehicle for the 305 and overdrive trans 700r4. I have been told the vacumn/electrical switch for the converter lockup is located on the firewall of the truck. Well, there are several things on the firewall with vacumn lines and wires, and I don't know which one is it. Obviously, i want to move it when the motor and trans come out, so i want to be sure i have the proper item. Does anyone have a picture of the switch? Last edited by skysoldier173rd; 07-28-2010 at 10:10 PM.



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