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08-14-2015, 07:59 PM
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#1 |
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Moderator
 Join Date: Dec 2012
Location: ON, Canada
Posts: 2,176
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Shift MPH 230/420/3.73?
Now that I am actually driving my truck, I'm wondering where to make the 2-3 shift. I'm going by ear/feel because I don't have a tach, and 30mph seems about right.
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08-14-2015, 08:14 PM
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#2 |
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State of Confusion!
  
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 47,226
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Re: Shift MPH 230/420/3.73?
Sounds about right to me. That is about what I do also.
__________________
Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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08-14-2015, 11:54 PM
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#3 |
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Registered User
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
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Re: Shift MPH 230/420/3.73?
With my 292/SM420/3.73 with 30 inch tires I shfted from 2nd to 3rd at 4000+ rpm. lol In 3rd at 4300 we were at 60. lol
And this was me driving.  https://www.youtube.com/watch?v=Nw_9eGLhhzk
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
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08-15-2015, 12:45 PM
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#4 |
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Moderator
Join Date: Dec 2012
Location: ON, Canada
Posts: 2,176
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Re: Shift MPH 230/420/3.73?
Oops, I've realized I used the wrong trans code. I have the regular three on the tree. Can't edit my original post title, perhaps a mod can for me?
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08-15-2015, 01:23 PM
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#5 |
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State of Confusion!
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 47,226
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Re: Shift MPH 230/420/3.73?
Truthfully it would be about the same for either tranny unless you are racing/pulling it hard. Easy driving, you would probably put it into 3rd around the 30 MPH mark.
__________________
Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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08-15-2015, 02:23 PM
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#6 |
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Moderator
Join Date: Dec 2012
Location: ON, Canada
Posts: 2,176
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Re: Shift MPH 230/420/3.73?
Thanks. Any idea what RPM 30mph is in 2nd? I'm keeping my eyes open for an appropriately patina'd cheap 6 cyl tach
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08-15-2015, 03:13 PM
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#7 |
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Registered User
Join Date: Feb 2008
Location: Sidney,b.c.
Posts: 4,425
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Re: Shift MPH 230/420/3.73?
I would just shift where you fell comfortable as the situation is. it will be quite fine to shft it into third at 20 mph unless you have a load in the rear or that you might be going up a hill. on my 1t with a 250 i usually just shift into 4th between 15 and 20 mph. there really is no need to take it to 4,000 rpm unless you want to hear it scream
Chevrolet I6 engs have always pulled nicely from lower rpms ron |
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