Turbo 350 not shifting right - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 06-11-2007, 09:18 PM
Registered User
 
Join Date: May 2007
Location: Canada
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Turbo 350 not shifting right

I have recently rebuilt Turbo 350 I am not new to automatics I have done several in the past. Mostly T400 and 727, This was my first 350. Everything went together real nice as it is supposed to. I used a B&M transkit and a B&M Transpak shift kit, installed a transmission specialties converter 3000 stall. Car has a solid 450hp 350 and is in a 72 Chevelle with 308 rearend. What is happening is the car shifts really soft, it doesnt slip just nice soft shifts like my wifes minivan. I thought maybe it was the modulator replaced with a new B&M unit and same results. I disconnect the modulator expecting full line pressure at all times which should give me hard shifts. However shifts remain the same and will not shift into third when left in drive unless I pull lots of rpm's. Also tranny will not shift down into 1st stays in 2nd when stopped.If I am shifting the car it will shift into third and I can shift it down into 1st as well. Once I reconnect the modulator it shifts properly manually or in drive just soft. This is the first B&M shift kit I have used, If I was trying to build a nice smooth shifting tranny I probably would not get results as good as I have got with this build. Even at 6800 rpm it is nice and soft. I want second gear rubber! Any help is appreciated Thanks Jamie

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 06-11-2007, 10:06 PM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Bar under the dash
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,101
Wiki Edits: 1659

Thanks: 340
Thanked 102 Times in 98 Posts
the trans pak has differnet levels of setup.... how did you set this tranny up with the kit?

how many check balls installed?

were all the springs installed per instructions?

Were the PR valve and boost valves free in the bores?



usually with B&M shift improver kits the complaint is HARD shifts.

You do know the stall speed converter will soften the shift 'feel' up a bit??
__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-11-2007, 10:22 PM
Registered User
 
Join Date: May 2007
Location: Canada
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Yes I am aware of the converter dampening effect. I installed 2 balls as per instructions for competition shifting, all valves seemed to be free in their bores no problems removing or installing, and I installed or removed all springs as per instructions.
Thanks Jamie
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 06-12-2007, 06:31 AM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Bar under the dash
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,101
Wiki Edits: 1659

Thanks: 340
Thanked 102 Times in 98 Posts
Quote:
Originally Posted by Gearjammers
Yes I am aware of the converter dampening effect. I installed 2 balls as per instructions for competition shifting, all valves seemed to be free in their bores no problems removing or installing, and I installed or removed all springs as per instructions.
Thanks Jamie

remove the v-body.... only install 1 check ball . The ball near the modulator valve is installed.

Modulator valve is in front of the vacuum mod cannister you replaced. The ball must be there.

__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 06-12-2007, 10:02 PM
Registered User
 
Join Date: May 2007
Location: Canada
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for the help I will try that as soon as I get the car back.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 10-24-2007, 05:36 AM
Registered User
 
Last photo:
Join Date: Oct 2007
Location: launceston
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Try using ford type f trans fluid, it has a high friction coeficient. My turbo 350 skids into top gear with only a 320 hp engine.
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Turbo 350 & 550 HP BB Chevy leejoy Transmission - Rearend 4 12-06-2007 09:56 PM
A turbo 350 or a Muncie m-22? n2o burner Transmission - Rearend 11 02-15-2006 06:47 AM
turbo 350 and Olds t-350 questions flatheadfever Transmission - Rearend 3 02-12-2006 08:41 PM
NOVA: Powerglide or Turbo 350? chevy71nova Transmission - Rearend 1 10-13-2003 04:50 PM
Turbo 350 in a 66 ChevyII sledge57 Transmission - Rearend 1 10-06-2003 04:54 AM


All times are GMT -6. The time now is 09:20 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.