73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Harmon on June 02, 2019, 01:22:00 PM
-
I have a 86 Chevy c10 that had 305 but was converted to 350.
I am attempting to hook up my torque converter lock up switch. I do not know the appropriate area to get vacuum to it.
I also do not know what type of trans i have. It is my understanding I have wires going to my tranny, problem is I can look under truck at the moment.
-
Hey man, gotta start with basics.
You need to know what type of trans you have before anyone can help you.
Take pics and post, that is a good start.
-
Yeah, good point, I do not know what I have as I cannot crawl under truck at the moment where it is parked. I know it cant be a 400 I assume since it had a 305 originally.
-
If you have wiring going to the trans, it might be a 700r 4 speed with overdrive. A good one to have! If you can snap a pic from both profiles I'm sure someone on this forum can help you ID.
-
What does the gear selector on the column look like? A 700 would have the D in a circle.
-
The D has more like a square around it, I assume that is the circle you speak of?
-
I think that's it. If it's not Overdrive there is no circle/square.
-
Ok, I threw cardboard down, and braved the tall grass to see I have a square pan trans. That according to what was said above, and my book indicates a 700-R4.
I "found out" I have a lock up torque converter...I do not believe it was hooked up. I have the lock up switch/Vacuum thing on the firewall. I have to plug that into the carb to get the correct vacuum do make this work?
I also noticed there is a "Boot" looking connection hanging down under truck on right side.
What is yall's thought to those 2 items?
Thank you.
-
I guess I dont really know what is suppose to be connected to the trans besides, Speedo cable, trans cooler lines, and this TV cable (which at one point I think i saw on the right side of my trans?)
-
Ok I think I figured it out. The lock up converter is connected electrically on the left side of trans.
-
Good job Harmon!
I have transmission envy... would love to have one like it on my K10.
I got nothin on where to hook up your electric or vacuum, look to the other guys on this forum to assist. They are a great resource.
BTW, the search engine is pretty potent; use it for vac diagrams, as well as electric.