I have a 4L80e out of an 06 silverado with 3K miles on it. I have the HD2 shift kit and pi triple disk stall ready to go in but I am wondering about the little spring for the pump that usually comes with the converter from PI.

I bought the converter used and it didn't come with the spring. Is this spring necessary? If so where can i pick one up? I plan to eliminate the pwm if that matters.

 

bump. Any insight? Any of you 4L80e guys running without the spring?

 

This is off topic, I have seen you post on here before and I just wanted to say that you have one great looking truck! its really a thing of beauty. got any other pics of it?

 

Damn, i cant remember **** aboutputtin my kit in its been so long, i have a yank converte and it did NOT come with a spring, maybe someone else will chime in

 

I plan on calling PI today. If I remember I will ask them.

 

When i spoke to PI yesterday they said that it is not absolutely necessary but I wanted to get some insight from the guys on the forum. They did say that it keeps the pressure up in the converter.

 

Hmmm.

 

The spring is for the Converter Limit Valve. It raises the pressure sent to the converter be it locked or unlocked pressure. The OE spring sets the pressure to about 100PSI. Adding the spring probably raises it to about 125-150. On a billet converter this is ok, it will take the extra pressure and not balloon, not a good idea on a stock 13" converter.

 

This is the first iv heard of this spring, I have a circle d, wich is awesome by the way. How can i get ahold of this spring, need more details.

 

Thanks for all of your advice guys! i will be trying it without the spring.