I have a fully race prepped 700-r4 and a Super Yank 3500 TC installed in my car. Both are brand new and JUST put in. Well I was under the impression after driving a few fourthgens with aftermarket stall convertors that when shifting the car into gear it's smooth, and the motor won't pull the car till you give it some RPM. But my 700-r4 and with my TC likes to shift HARD from park into gear, and it pulls at idle (idle is about 800 on a modded LT1 motor). Is this typical for 700-r4 and TC combo? I can maybe see that on 4th gens the tranny doesn't shift hard into gear because it's computer controlled. Any thoughts on this?

 

ttt

 

ttt

 

Up

 

Well, I am no expert but just to give you something and put keep this up top for you: I think that it is very possible that it is just because of newer tranny design that keeps the shifts from park smoother on the fourth gens. I know that the 700r4s with the newer valve body style are supposed to shift out of park smoother than the older ones. As for the torque converter yanks are supposed to be great. From what I have been told higher end torque converters arent supposed to slip to much at low rpms under part throttle, but when you punch it, it the rpms should jump on up there. Hope this helps.

Ben

 

Momars right.
I see you car is an 87 but if it's an early 87 it will not have the auxiliary valve body that reduces banging from park to reverse or down to drive. If your car does have an auxiliary valve body it will have a tube over the valve body that runs from the back to the front on the drivers side. If you post the numbers found on the passenger side rear lip I'm sure someone could tell you for sure.