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04-12-2014, 05:22 PM
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#1 |
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Registered User
Join Date: Aug 2008
Location: KS
Posts: 268
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Th350 shifting early
The turbo 350 in my 70 is shifting way to early. It makes the 1-2 shift around 3,300 rpm and the 2-3 shift happens 3,900 and I was just wondering what ya'll thought it would be? Thanks in advance!!
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1970 SWB "old flame" 1967 SWB c10 sold 1972 Elcamino 496 2012 Denali HD dmax |
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04-12-2014, 07:00 PM
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#2 |
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Registered User
Join Date: Dec 2012
Location: Providence, RI
Posts: 211
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Re: Th350 shifting early
Is the detent/kickdown cable hooked up?
I don't remember if the modulator was for shift points, or shift firmness, but some are adjustable. I thought the detent was for high rpm shift points, and the modulator controlled the low shift points/firmness in drive
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Mark 71 C10 Cheyenne 12 Aprilia RSV4 |
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04-12-2014, 07:01 PM
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#3 |
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Registered User
Join Date: Jan 2000
Location: Wyoming USA
Posts: 2,453
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Re: Th350 shifting early
You might go down south in the performance section and ask ,have you done anything to it or did it just start doing it.Could be the govenor,could be in the valve body , could be clutchs need a little bit more info.
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2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327/4L60 |
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04-12-2014, 10:51 PM
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#4 |
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Registered User
Join Date: Aug 2008
Location: KS
Posts: 268
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Re: Th350 shifting early
I bought the truck back about a year ago and it was doing it then. The kick cable is hooked up and working. The teams isn't slipping so I wouldn't think it was clutches. I can shift it manually and it will stay in that gear until I up shift..
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1970 SWB "old flame" 1967 SWB c10 sold 1972 Elcamino 496 2012 Denali HD dmax |
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04-12-2014, 10:56 PM
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#5 |
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Registered User
Join Date: Jul 2011
Location: Des Moines, Iowa
Posts: 3,016
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Re: Th350 shifting early
x2 for the modulator. I'd check/replace it to start with.
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project: "my happy mess" |
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04-13-2014, 10:24 AM
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#6 | |
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Registered User
Join Date: Aug 2008
Location: KS
Posts: 268
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Re: Th350 shifting early
Quote:
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1970 SWB "old flame" 1967 SWB c10 sold 1972 Elcamino 496 2012 Denali HD dmax |
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04-13-2014, 11:42 AM
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#7 | |
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Registered User
Join Date: Dec 2012
Location: Providence, RI
Posts: 211
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Re: Th350 shifting early
Quote:
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Mark 71 C10 Cheyenne 12 Aprilia RSV4 |
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04-13-2014, 05:53 PM
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#8 |
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Registered User
 
Join Date: May 2007
Location: Rapid City South Dakota
Posts: 2,359
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Re: Th350 shifting early
I would try adjusting the kick down cable. It is simple, free, and does change when it shifts.
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Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299 |
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