TH350 shifts points, 1-2 too low and 2-3 too high.

Olds 307 and 403

Active member
Oct 4, 2018
190
59
28
Melville, Saskatchewan
Ok so I have the B+M weights, #4 and #5, I believe with stock springs. My 1-2 is about 4750 rpm and 2-3 is 5200+, I let off. I would like both around 5000 rpm, slightly over I can live with. Does one weight affect one shift or the other or both? What about springs? I am finding conflicting advice on what they do, some say they just spread the shift, others say raise or lower. I haven't played around much with the TH350 governor. I plan on a Transgo kit set at the firmest shift and Hughes 2500 stall. I have the modulator set to the highest shift points.
 

marcar1993

New member
Oct 3, 2018
12
15
3
CNJ
Try a 3rd pedal, you control every shift!

Just kidding, but when I had my th350 with a trans go kit in it, I played with the governor. The 1-2 always shifter lower than 2-3. I don't want to say you cannot make it shift the same rpm for both shifts, but I do want to say I don't *think* the governor will fix the rpm disparity.
 

Olds 307 and 403

Active member
Oct 4, 2018
190
59
28
Melville, Saskatchewan
I experienced the spread on the shifts on the 2004R as well. Usually 1-2 highest, 2-3 a couple hundred lower and 3-4 a couple of hundred lower again. I would rather have it that way. I also don't want to raise the 2-3 any higher which makes it tricky. I need to have the guts to see if it shifts before 5500. A 3rd pedal would be nice but finding a T-56 or TR6060 is tough, they demand big money here. Too bad my 70 wasn't a factory 4 speed, the Muncie are tough transmissions.
 
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