The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-21-2020, 01:09 PM   #1
tdangle
Senior Member
 
tdangle's Avatar
 
Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 1,208
2004R Calibration

Has anyone been successful in raising the part throttle shift points on their 2004R transplant. I realize it was calibrated for a high rear gear and I have a low gear, 4.10 to be exact. It thinks I'm traveling much faster than I am due to the increased driveshaft speed. The think will go into 4th by 35-40 and doesn't really respond to 50-60% throttle as I would expect. Yes the TV cable is properly adjusted and my understanding is this is not how you set the shift points.
__________________
Terry

1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC
tdangle is offline   Reply With Quote
Old 11-21-2020, 01:28 PM   #2
The Rocknrod
Moderator

 
The Rocknrod's Avatar
 
Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
Re: 2004R Calibration

I have read where people trim the weights in the governor to change the shift point.
https://www.chevytalk.org/fusionbb/s...php?tid/283173
https://www.hotrodders.com/threads/c...ission.221004/
Here is a good thread on this forum - http://67-72chevytrucks.com/vboard/s...4&postcount=19
Now to find out where to get those governors. Maybe Monster can help? - https://www.monstertransmission.com/...or_c_5183.html
Do not attempt to adjust the shift timing with the throttle valve cable. The shift timing is controlled by the governor springs. For higher shift points at wide-open throttle, install lighter springs. For lower shift points at wide-open throttle, install stronger springs. - https://transmissioncenter.net/shop/200-r4-tip-sheet/
The Rocknrod is offline   Reply With Quote
Old 11-21-2020, 08:02 PM   #3
tdangle
Senior Member
 
tdangle's Avatar
 
Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 1,208
Re: 2004R Calibration

Quote:
Originally Posted by The Rocknrod View Post
I have read where people trim the weights in the governor to change the shift point.
https://www.chevytalk.org/fusionbb/s...php?tid/283173
https://www.hotrodders.com/threads/c...ission.221004/
Here is a good thread on this forum - http://67-72chevytrucks.com/vboard/s...4&postcount=19
Now to find out where to get those governors. Maybe Monster can help? - https://www.monstertransmission.com/...or_c_5183.html
Do not attempt to adjust the shift timing with the throttle valve cable. The shift timing is controlled by the governor springs. For higher shift points at wide-open throttle, install lighter springs. For lower shift points at wide-open throttle, install stronger springs. - https://transmissioncenter.net/shop/200-r4-tip-sheet/
I have read some of those posts also. I'm not sure I want to experiment with my only governor and these seem to be fairly rare. If I had it to do again, I would have gone with a 4l60e so I could adjust the shift points with the controller
__________________
Terry

1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC
tdangle is offline   Reply With Quote
Old 11-21-2020, 08:48 PM   #4
The Rocknrod
Moderator

 
The Rocknrod's Avatar
 
Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
Re: 2004R Calibration

I like the lighter springs idea in the last link.
The Rocknrod is offline   Reply With Quote
Old 11-23-2020, 08:28 AM   #5
cadillac_al
Registered User
 
Join Date: Oct 2013
Location: Maine
Posts: 2,325
Re: 2004R Calibration

If Transgo makes a shift reprogramer kit for that trans it should come with governor springs and some recommendations for a starting point.
__________________
76 Chevy K20
76 GMC K15
77 Chevy C10
77 Chevy K10
cadillac_al is offline   Reply With Quote
Old 11-23-2020, 08:42 AM   #6
The Rocknrod
Moderator

 
The Rocknrod's Avatar
 
Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
Re: 2004R Calibration

https://transgo.com/product-details/sk-200-4r/
They say their kit fixes late or early shifts.
The Rocknrod is offline   Reply With Quote
Old 11-24-2020, 01:43 AM   #7
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 2004R Calibration

Springs alone won't make drastic changes. Finding a "HP" Turbo Buick or Monte Carlo SS Valve Body & Governor will be the BEST starting point.

I stopped building 700R4 & 2004R because it was always assumed that tuning shift points is included in a rebuild. I got scars up & down my arms pulling Governors. People ask if I got a skin condition.....I have a "Got Burnt 100,000 times" condition!!

Take the Governor Springs completely out & see what it does....If it still shifts early....Lighter springs will obviously not fix it.
clinebarger is offline   Reply With Quote
Old 11-24-2020, 08:04 PM   #8
tdangle
Senior Member
 
tdangle's Avatar
 
Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 1,208
Re: 2004R Calibration

Got a response back from Transgo. Their shift improver kits will not reprogram the shift points from what they were from the factory for a particular transmission calibration.
__________________
Terry

1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC
tdangle is offline   Reply With Quote
Old 11-26-2020, 11:25 PM   #9
Myself
Registered User
 
Join Date: Oct 2005
Location: Northern Arkansas
Posts: 1,126
Re: 2004R Calibration

You fine tune the shttps://www.summitracing.com/parts/bmm-20248?seid=srese1&gclid=Cj0KCQiAwf39BRCCARIsALXWETybJ6Kq0DmZRYNO_If2tg6iVz2nS-GNlknlnx5dHrRaSUrKpRfTuh4aAgMREALw_wcBhift points with one of these...
Myself is offline   Reply With Quote
Old 11-27-2020, 12:22 AM   #10
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 2004R Calibration

B&M 20248 doesn't work on 200-4R governors.
clinebarger is offline   Reply With Quote
Old 11-27-2020, 03:05 PM   #11
Tman
Registered User
 
Tman's Avatar
 
Join Date: Mar 2006
Location: Reynolds, ND
Posts: 78
Re: 2004R Calibration

I sent my valve body and governor to Extreme Automatics. They set it all up and sent it back. I love how it works now, around $325 all said and done. This was on a low mile stock olds 88 2004r, now in my 68 with 4.11 gears and 275/60 rear tires. Definitely worth the money, no trial and error. I have buddy who did the governor weights and springs in his Monster 2004r that had the same low shift points and he had the pan off 5 or 6 until he liked it. Extreme was well worth it.
http://extremeautomatics.com/product...fromc=0&fromt=

Last edited by Tman; 11-27-2020 at 03:45 PM. Reason: Add link
Tman is offline   Reply With Quote
Old 11-27-2020, 08:31 PM   #12
tdangle
Senior Member
 
tdangle's Avatar
 
Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 1,208
Re: 2004R Calibration

Quote:
Originally Posted by Tman View Post
I sent my valve body and governor to Extreme Automatics. They set it all up and sent it back. I love how it works now, around $325 all said and done. This was on a low mile stock olds 88 2004r, now in my 68 with 4.11 gears and 275/60 rear tires. Definitely worth the money, no trial and error. I have buddy who did the governor weights and springs in his Monster 2004r that had the same low shift points and he had the pan off 5 or 6 until he liked it. Extreme was well worth it.
http://extremeautomatics.com/product...fromc=0&fromt=
Thanks for the info. I have sent them an email and am looking into doing the same as you did.
__________________
Terry

1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC
tdangle is offline   Reply With Quote
Old 11-28-2020, 01:42 AM   #13
Tman
Registered User
 
Tman's Avatar
 
Join Date: Mar 2006
Location: Reynolds, ND
Posts: 78
Re: 2004R Calibration

Quote:
Originally Posted by tdangle View Post
Thanks for the info. I have sent them an email and am looking into doing the same as you did.
Make sure to get the correct speedo gears in there at the same time, don’t want to go in there again. My buddy also set up a delay relay in the lockup that slows 4th gear lockup that we both use, that is really nice too.
Tman is offline   Reply With Quote
Old 11-28-2020, 12:32 PM   #14
tdangle
Senior Member
 
tdangle's Avatar
 
Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 1,208
Re: 2004R Calibration

Quote:
Originally Posted by Tman View Post
Make sure to get the correct speedo gears in there at the same time, don’t want to go in there again. My buddy also set up a delay relay in the lockup that slows 4th gear lockup that we both use, that is really nice too.
I also have my lockup set up that way. Using a vac switch and electronic delay works well.
__________________
Terry

1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC
tdangle is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:09 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com