Re: TH350 Governor/Shift weights
 

Got the governor out of the car last night, it currently has a #2 weight along with another that is not stamped with any marking. Had an orange spring on the #2 and a green spring on the unmarked weight. See images.

https://i.imgur.com/s6Mh6qU.jpg
https://i.imgur.com/aaZYNOp.jpg
https://i.imgur.com/ZqW4XBo.jpg
https://i.imgur.com/Vf6Bz7o.jpg

Re: TH350 Governor/Shift weights
 

Just me but I would have obtained a couple of governors to experiment with and left that one alone and tag it with it's shift points.
Someone asked about a burnout with the auto shift. When I ran a T350 I never came out of a burnout in 2nd as that shocks the weak link in a T350, the intermediate overrun sprag on the direct drum.

Re: TH350 Governor/Shift weights
 

In your case, I'd probably put a full , unmodified weight in there to match the other one, and try that first.

Re: TH350 Governor/Shift weights
 

Maybe this will help, according to my B&M instruction sheet the weights go from 1 to 6. 1 being the heaviest 6 being the lightest. the springs go purple blue green yellow orange red in that order. purple is the stiffest spring and red is the lightest.
First gear late shift excessively light spring on weight.
High gear to soon excessively heavy weight.
the plain steel unmarked spring looks like a stock factory weight. Dan

Re: TH350 Governor/Shift weights
 

Could you post the sheet B&M sends with the kit? I haven't been able to find it anywhere. I think I'll do what Mark suggested and just put a heavier or stock weight in it and see. Might have to grab a lighter spring too

Re: TH350 Governor/Shift weights
 

I tried to last night but the file format of my laptop or whatever is to large to upload to this site. The instruction don't go into much more detail other than if it shifts to early go to lighter weights and/or springs if it shifts to late go to heavier weights and or springs. The stock weights and springs on the governor will shift around 4200-4300 rpm this was a safety factor is if the unaware driver left the shift lever in 1st or low it would automatically fail safe shift before the redline of the stock engine so they didn't have loads of warranty replacement engines. Shift kits were developed to bypass this safety so you could hold any gear till you manually moved the lever . I tried weighing a few spare weighs I have from my kit to give you an idea of what they are put my 14 year old grams scale is DOA .

Re: TH350 Governor/Shift weights
 

I would try the yellow spring with the #2 weight and leave the other alone. then test if to low try orange spring.

Re: TH350 Governor/Shift weights
 

Number 1 weight and a purple spring! Should get you down about 600 rpm. Looks like one of springs is green. Change it with a purple and if you need more change the other spring if you can tell what color it is. According to chart the heavier weight will change shift approx 400 rpm Springs move approx 100 per color up to 600 total. There are 6 colors in the kits.

Re: TH350 Governor/Shift weights
 

This may help you also with the B&M chart...
https://www.jegs.com/InstallationIns.../130-20248.pdf

Re: TH350 Governor/Shift weights
 

About the burn out when I ran a coan xlt full manual ( no auto shift ) I was told start in 2nd go and go to 3rd.