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dlwagoner 10-02-2011 10:47 AM

More 700R4 questions
First... I read the thread about the 700R4 lock up wire diagram, but I am unsure if that is all I need to hook up to make the trans work properly.

Second... What does the 87 pin go to?

The trans is staying in the original truck, but I am swaping engines and going with a carb. I want to do away with as much computer stuff as I can.

I am swapping the 6.2 out of my 89 Suburban for a 350.

Any help would be greatly appreciated.


dlwagoner 10-02-2011 11:04 AM

Just a thought... I have to buy a new torque convertor for the gas engine anyway, should I try to find a non-lockup convertor and just do away with the electrical? Is that even an option?

Also I have alot of th350 parts. Do the th350 and 700R4 use the same flex plate?

SSedan64 10-03-2011 05:03 AM

Since you're doing away with the Computer controls, you'll need to buy a Lockup Kit or DIY.

Pin 87 ??

You can convert the 700R4 to use a Non-Lockup TC. Requires swapping the TCC Apply Valve in the Pump & removing Check Valve and O-ring from Input Shaft + a Non-Lockup TC.

Many 350s & 700R4s use the same Flexplate.

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