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Old 10-12-2013, 09:22 PM
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Shift points & Governors

So I have a 455 with a Th400, when I bought it years ago it shifted fine with the stock engine. Now I have the 455 built a little better than stock with some extra cam... The previous owner had changed some of they governor weights to shift to his liking. Now with the additional HP I feel it shifts way too soon with both easing out of a stop or even when I squish the carpet.
My question... Will putting in lighter weights in effect both conditions like I want it too?
I would like 1-2 to be at about 2200-2400 under normal driving conditions and 4000-4500 WOT
And something along those lines for 2-3.
But what the hell do I know?

Blast away!
Thanks,
Jerry

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Old 10-12-2013, 09:59 PM
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B+M Transmissions sells a "Governor Recalibration Kit" Part # 20248 for the GM transmissions...it does exactly what you want to do...it is more than just weights, there are springs between the inner and outer flyweights to balance part-throttle shifts with WOT shift points..

Governor Recalibration Kit for TH-700R4, TH-400 & TH-350 | B&M Racing and Performance Products
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Old 10-13-2013, 06:41 PM
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Thanks...

I also feel the rpms are a little high at highway speeds just toolin along...
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Old 10-13-2013, 09:08 PM
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Taller tires or higher (smaller #'s) rear end gears are the way to change the cruise RPM unless un have the money to install some kind of overdrive.
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