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-   -   TH-350, how long should the shift take. (https://classracer.com/classforum/showthread.php?t=21246)

Chad Rhodes 10-22-2009 12:53 PM

TH-350, how long should the shift take.
 
What i mean is how long (in seconds) should the shifts take in a stocker prepped TH350. Judging by my datalogs its take .3 seconds. I am looking at the highpoint of first gear, to the lowest point immediately after the shift, same thing for the 2/3 shift. I am thinking it may be shifting slow, and thus losing some. any idea?

Crisco 10-22-2009 01:56 PM

Re: TH-350, how long should the shift take.
 
Quote:

Originally Posted by Chad Rhodes (Post 147371)
What i mean is how long (in seconds) should the shifts take in a stocker prepped TH350. Judging by my datalogs its take .3 seconds. I am looking at the highpoint of first gear, to the lowest point immediately after the shift, same thing for the 2/3 shift. I am thinking it may be shifting slow, and thus losing some. any idea?


Does your datalog also show RPM @ shift?

Chad Rhodes 10-22-2009 02:01 PM

Re: TH-350, how long should the shift take.
 
Quote:

Originally Posted by Crisco (Post 147378)
Does your datalog also show RPM @ shift?

yes it does. however what i am looking at is how long the trans actually takes to make the shift. I'm thinking it should be shifting quicker

Kevin Cradduck 10-22-2009 02:38 PM

Re: TH-350, how long should the shift take.
 
Sounds more like operator error rather than a mechanical issue. I'd put your dad back in the driver's seat!

Chad Rhodes 10-22-2009 02:40 PM

Re: TH-350, how long should the shift take.
 
Quote:

Originally Posted by Kevin Cradduck (Post 147389)
Sounds more like operator error rather than a mechanical issue. I'd put your dad back in the driver's seat!

ouch! i was referring to internal transmission functions

Kevin Cradduck 10-22-2009 02:49 PM

Re: TH-350, how long should the shift take.
 
As apposed to bodily functions?

buzzinhalfdozen 10-23-2009 07:53 AM

Re: TH-350, how long should the shift take.
 
Could you post you datalogger screen shot? I'd like to look at it I have a XLT 350 that I've been working on that had some issues. It would help to see what you're looking at. Joe

Bill Grubbs 10-23-2009 12:01 PM

Re: TH-350, how long should the shift take.
 
.25 1-2 500 drop
.32 2-3 1208 drop

Bill

Chad Rhodes 10-23-2009 12:19 PM

Re: TH-350, how long should the shift take.
 
Quote:

Originally Posted by Bill Grubbs (Post 147537)
.25 1-2 500 drop
.32 2-3 1208 drop

Bill

Thanks Bill, on the 1-2 I'm assuming it goes back into the converter a bit? i know I've been shifting too high on ours, going to remedy that

Chad Rhodes 10-23-2009 12:32 PM

Re: TH-350, how long should the shift take.
 
http://img.photobucket.com/albums/v6...68/datalog.jpg

the red line is the RPM


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