Jack Leslie's 1957 Sedan Delivery

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TH400 Governor mods

indymanjoe · 2023-05-27T21:16:48+0000

My 469 cu TH400 trans has always shifted very quickly. Just crossing the street it was in 3rd gear. I figured it was because the original rear end was long gone when i bought the car and a 3:55 posi was installed. The original gear was a 2:78 iirc So today i spent the day pulling the Governor and modifying the inner weights by removeing some metal alittle at a time removing cutting some metal off reinstalling checking pulling it again and again... after removing 2 grams of metal equally off each weight i was finally where i want to be!! WOT didnt change alot but it shifts alot better around town etc..Very Happy! Then i found this article...Thanks Mr Paine! I ended up with roughly B in the article below. 2nd to 3 is right at 5k rpms