350 rebuild not as firm as before - Why? - 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 09-28-2009, 07:16 PM
Registered User
Last photo:
Join Date: Sep 2009
Location: Midwest
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
350 rebuild not as firm as before - Why?

Just finished a repair on my 350 tranny, and now it drives "softer". Specifically, I had to replace the forward clutch drum and input shaft, so I had things apart down to the planetary.

Before, this truck would chirp the tires in each gear (it has a shift kit). Now it shifts up and down fine, just isn't as responsive. I'm wondering why.

Here are some possible factors. Could any of these be the cause...

1. I replaced the converter. It's just standard, but my old one was a high-stall.

2. The new forward clutch drum is a little "deeper" than the old one. Hence, there is a larger gap between the pressure plate and snap ring than there was before.

3. I did not flush the cooler or lines. When I originally pulled the pan, fluid looked great and there were no shavings, so I didn't see a need.

4. I disassembled the pump just long enough to inspect it. I'm pretty sure I got everything back correctly.

I'm OK driving the truck as is, I'm just curious why it would perform differently when very little was changed. What am I mising here?

Thanks guys, Chad


Last edited by cbroadway; 09-28-2009 at 08:06 PM.
Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 09-28-2009, 08:29 PM
SSedan64's Avatar
Registered User
Last photo:
Join Date: Dec 2007
Location: Macon, GA.
Age: 53
Posts: 6,015
Wiki Edits: 0

Thanks: 0
Thanked 48 Times in 48 Posts
A converter with stock stall speed should shift firmer than one with a higher stall. Possibly too much clearance between clutch plates, Valvebody gasket may be damaged where the bolt wasn't tightened.
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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
Distributor Tuning and Theory - Part 1 Rick WI Engine 35 04-26-2011 12:38 AM
first 350 rebuild campracing Engine 8 09-10-2009 01:30 PM
350 Engine rebuild CamMan Engine 35 06-01-2006 02:32 PM
350 rebuild techgruv Engine 5 11-26-2003 07:46 AM
turbo 350 rebuild??? 87 gn Transmission - Rearend 4 03-10-2003 12:32 PM

All times are GMT -6. The time now is 05:24 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.