![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Salty Sailor
Join Date: May 2009
Location: Savannah, Ga
Posts: 603
|
![]()
When i take off from a stop, no faster than average motorist. I notice a slop in the drivetrain. I not only can feel it but hear a noise that i have a hard time describing in text.
My first thought is that is is the transmission cross member. I checked the mounts to the frame and it feels solid. I think I would have checked the bushing too but i cant remember. But were going to assume that i did. this leaves the rear end, I have 3" lift blocks, stock springs. or the motor mounts, which I believe would be obvious under a rolling takeoff with hard acceleration ![]() what if my cab mount bushings were shot, would that be what im feeling? what could my issue be?
__________________
86 c-10 Custom Deluxe Savannah, Georgia |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Jun 2012
Location: Meeker, ok
Posts: 146
|
Re: taking off from a stop issue
Have you checked your U-joints or pinion bearing?
__________________
Trevor 74 C20...work in progress. 04 Saturn Ion...Daily Driver |
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,639
|
Re: taking off from a stop issue
With 3 inch blocks check the u-bolts and the pinion angle.
Here's a link on finding and curing vibrations. http://www2.dana.com/pdf/J3311-1-DSSP.pdf |
![]() |
![]() |
![]() |
#4 |
Salty Sailor
Join Date: May 2009
Location: Savannah, Ga
Posts: 603
|
Re: taking off from a stop issue
I replaced the pinion bearing when right after i put this rear in the truck. didnt know it was bad until the first test drive... redneck on craigslist lied to me
I suspect the U bolts since it was an Autozone sourced block kit, and the u bolts dont look too beefy. In fact I have not adjusted them since installation, which I understand you are supposed to check them after a while. currently I am out of state so keep the ideas coming in case it is something else
__________________
86 c-10 Custom Deluxe Savannah, Georgia |
![]() |
![]() |
![]() |
#5 |
Another Day, Another Dollar
Join Date: Nov 2008
Location: North Vancouver, BC
Posts: 1,316
|
Re: taking off from a stop issue
Check your slip yoke. They often cause slop from takeoff
__________________
-78 K20 Cheyenne 454 long box, 4" lift, 35" MT's, '84 cab, '80 box "its hip to be square" ![]() |
![]() |
![]() |
![]() |
#6 |
Salty Sailor
Join Date: May 2009
Location: Savannah, Ga
Posts: 603
|
Re: taking off from a stop issue
what would i be looking for on the slip yoke? would i just grease it or what
__________________
86 c-10 Custom Deluxe Savannah, Georgia |
![]() |
![]() |
![]() |
#7 |
Another Day, Another Dollar
Join Date: Nov 2008
Location: North Vancouver, BC
Posts: 1,316
|
Re: taking off from a stop issue
Try twisting it and pushing it up and Down WHILE NOT UNDER LOAD, it's often pretty hard to tell though without dropping the shaft and inspecting it on a bench. It doesn't take much to make a ruckus. The slip yoke is male and female splines that mate and slide back and forth on each other. They can get hammered out over the years. You could try greasing it but if its to the point of making noise, your probably looking at replacing it or turning the stereo up.
__________________
-78 K20 Cheyenne 454 long box, 4" lift, 35" MT's, '84 cab, '80 box "its hip to be square" ![]() |
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Apr 2013
Location: Pasadena, Maryland
Posts: 160
|
Re: taking off from a stop issue
What transmission and transfer case do you have?
|
![]() |
![]() |
![]() |
#9 |
Salty Sailor
Join Date: May 2009
Location: Savannah, Ga
Posts: 603
|
Re: taking off from a stop issue
700r4 trans
dont have a transfer case, its a 2wd pre runner
__________________
86 c-10 Custom Deluxe Savannah, Georgia |
![]() |
![]() |
![]() |
#10 |
Registered User
Join Date: May 2010
Location: Rochester NY
Posts: 831
|
Re: taking off from a stop issue
Engine mounts? Might be rocking.
__________________
1973 k20 Suburban 350 1974 Custom stepside c-10 250 1975 Chevy stepside 454 1986 K30 Crewcab SRW 350 R.I.P- glimmertwin01- board member and good friend, you will be missed |
![]() |
![]() |
![]() |
#11 |
Salty Sailor
Join Date: May 2009
Location: Savannah, Ga
Posts: 603
|
Re: taking off from a stop issue
They have been replaced recently
__________________
86 c-10 Custom Deluxe Savannah, Georgia |
![]() |
![]() |
![]() |
#12 |
Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
|
Re: taking off from a stop issue
Check the spider gears and center pin in the diff. When worn and almost ready to die these can get very sloppy
__________________
377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
![]() |
![]() |
![]() |
#13 |
Salty Sailor
Join Date: May 2009
Location: Savannah, Ga
Posts: 603
|
Re: taking off from a stop issue
my gears are 4.10 and my posi is an aftermarket unit. it could be worn but would that cause the issue described?
__________________
86 c-10 Custom Deluxe Savannah, Georgia |
![]() |
![]() |
![]() |
Bookmarks |
Tags |
bucannon, pre runner, prerunner |
|
|