can someone post a few pictures of how you lightened the weights in the governor? And tools used? And how you replaced the pins? Much appreciated. I’m going to use the Tri Shield BB formula from previous posts.
An article by Gary Paine, I used the B&M shift point modification kit. A lot more expensive to do it that way, but every change is reversible. I still advise you to play with a spare governor in case you go too far. https://www.summitracing.com/parts/bmm-20248
Thanks Larry, I do have a spare governor. Now I have a much better idea how to grind down the weights.
I get a spare gov to experiment with, keep the original. I ordered a box of rather long, skinny cotter pins to hold the weights. Keep good notes of results, which take some driving to collect. Bruce Roe
The cotter pin I use (one or two times) is 3/32 dia 1.75 long inches, McMaster Carr 98338A155 $5 for 100. The usual spring/weight kit is used here, but I usually manage to finish with the original kit parts back in the box for the next project, modified/ground OEM parts in the car. Here are the 6 weights in the kit, with 12 dif strength springs sorted out. The 1/4 in rod is so I can push 2 springs together to compare, with no danger of them flying off to oblivion. good luck, Bruce Roe
Thanks Bruce. Here are pics of my governor - it came with the tranni - 1970 Pontiac 455....assume a full size car. I’m going to weigh the weights before doing anything.
The turbo 400 currently upshifts to second too soon, into 3rd by 25 mph. The adjustable modulator is all the way in....with one more possible turn of adjustment left. What I’ve read, very little change if I were to turn screw in the last turn. The governor will be my next focus , as I’m sure it needs some mods.
The modulator doesn't affect WOT shifts, just minimum and part throttle shift points, and the adjustment range is small. The governor is what you must adjust. One more thing, your electric kickdown must be hooked up and functional. If it isn't, that alone will make it short shift at WOT.
Larry - I have the kick down working. Or it appears work. I can here it clicking in the tranni. Car appears to be down shifting when accelerator pushed to the floor. I’d be happy for now to obtain 4800 rpm shifts from 1-2, 2-3 on this stock 350 engine. The 455 will require further mods down the road. Thanks
Look for my old thread on this topic, and it talks about how to weigh the weights. Overall weight is a bad indicator of how it will affect shifts, you really need to know nose weight.. I'd throw up the link but I can never find it....the thread does have a "recipe" for a 5300 RPM governor, you could back it off a little for 4800
That's because it isn't your thread Rhett although you did contribute to it a lot. I managed to find it though. David Butts started the thread. http://www.v8buick.com/index.php?threads/governor-info.207490/