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 > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-04-2015, 07:36 PM   #1
65standard
Registered User
 
65standard's Avatar
 
Join Date: Dec 2014
Location: Coal City, IL
Posts: 695
Another junkyard rescue

I just saved this 1985 C10 SWB from the junkyard. The only thing wrong with it is the transmission. It will not shift out of first unless I manually down shift it, then manually up shift it. It is a nicely optioned truck and didn't want to see it scrapped. It looks like a standard turbo 350 trans without any computer or TV cable.

My question is what are my fix options. I'm hoping it isn't anything mechanically wrong with the trans. And maybe it is just the vacuum line or the electrical connector on the vacuum line for the shift module.
Attached Images
 
__________________
Tony Nicholas @ Midwest Metal Masters

1953 Chevy 3100 392 Hemi w/727 & 9” Ford
1985 Chevy C/10 6.0L 4L80 373 locker
65standard is offline   Reply With Quote
Old 05-04-2015, 08:07 PM   #2
RIDE-RED 350r
Registered User
 
RIDE-RED 350r's Avatar
 
Join Date: Mar 2014
Location: Blossvale NY
Posts: 202
Re: Another junkyard rescue

I wish I could offer some advice on the shifting issue, but I can't..

But I have to say, I cannot fathom why someone would scrap a truck like that!! Nice rescue!
__________________
Who needs a Hemi when ya got a Chevy!
RIDE-RED 350r is offline   Reply With Quote
Old 05-04-2015, 08:34 PM   #3
MalibuSSwagon
Registered User
 
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
Re: Another junkyard rescue

Nice save!
MalibuSSwagon is offline   Reply With Quote
Old 05-04-2015, 08:37 PM   #4
Vintage Windmills
Vintage 4x4s
 
Vintage Windmills's Avatar
 
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
Re: Another junkyard rescue

I like it!
__________________

67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades)
67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore )
86 CHV K30 502 th400, apple red NEW
71 CHV K20 350 SM465, ochre (saved work truck)
71 CHV K20 292 SM465, white, tach, PTO, (future project)
72 CHV K20 350 350th, medium blue (project stocker)
01 CHV K2500hd crew, indigo blue

^3 dont run and the others don't see winter either
'86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649
'71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642
'72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6
Vintage Windmills is offline   Reply With Quote
Old 05-04-2015, 09:07 PM   #5
80SPORT
Registered User
 
80SPORT's Avatar
 
Join Date: Mar 2008
Location: red deer alberta
Posts: 777
Re: Another junkyard rescue

Check vacuum modulator and hose....
80SPORT is offline   Reply With Quote
Old 05-04-2015, 09:55 PM   #6
kalbert
Registered User
 
Join Date: Jun 2012
Location: Minnesota
Posts: 509
Re: Another junkyard rescue

Quote:
Originally Posted by 80SPORT View Post
Check vacuum modulator and hose....
+1 Check the modulator and hose. If all it needs is a $30 part or 30¢ worth of hose you scored big!
kalbert is offline   Reply With Quote
Old 05-04-2015, 11:00 PM   #7
gmachinz
Account Suspended
 
Join Date: Jun 2011
Location: Des Moines, IA.
Posts: 4,143
Re: Another junkyard rescue

Its also worth dropping the trans pan to inspect the linkage arm that holds the end of the shift cable-if its adjusted (by previous owner) incorrectly (as is the case often with the install of aftermarket carbs) then at part and WOT the cable tension can actually break that cable linkage. It basically bolts to the valve body and actuates a small piston-if it breaks/ninds, no shifting out of first gear.....and sometimes not out of park either.

Another cause could be a sticking/bad governor....try removing it, wipe the inside of the bore with a rag soaked in clean trans fluid and reinstall the governor. These are just some things I've encountered myself.
gmachinz is offline   Reply With Quote
Old 05-05-2015, 01:28 PM   #8
65standard
Registered User
 
65standard's Avatar
 
Join Date: Dec 2014
Location: Coal City, IL
Posts: 695
Re: Another junkyard rescue

Thanks everyone. I'll check those things out. I also see the shifter is out of adjustment between the column indicator and trans.
__________________
Tony Nicholas @ Midwest Metal Masters

1953 Chevy 3100 392 Hemi w/727 & 9” Ford
1985 Chevy C/10 6.0L 4L80 373 locker
65standard is offline   Reply With Quote
Old 05-05-2015, 02:13 PM   #9
Lokin4AReason
Registered User
 
Lokin4AReason's Avatar
 
Join Date: Oct 2014
Location: somewhere . . .
Posts: 974
Re: Another junkyard rescue

local junk yard(s) may have a transmission for one ...

a friend of mine scored a 700R4 w/ a GM Good wrench tag ( remanufactured, I am guessing ) on one for 100.-
__________________
dont want to hear excuses, i want to hear solution(s)
Lokin4AReason is offline   Reply With Quote
Old 05-05-2015, 05:14 PM   #10
65standard
Registered User
 
65standard's Avatar
 
Join Date: Dec 2014
Location: Coal City, IL
Posts: 695
Re: Another junkyard rescue

I got the trans issue fixed. The short hose from the modulator to the steel line was split. I still have two more issues to solve. It pulls to the right when braking, and the high idle solenoid doesn't seem to move in or out.

Anyone know how to set the cold idle and how to set the hot idle on this electronic quadrajet carb?

Thanks again for everyone's help.
__________________
Tony Nicholas @ Midwest Metal Masters

1953 Chevy 3100 392 Hemi w/727 & 9” Ford
1985 Chevy C/10 6.0L 4L80 373 locker
65standard is offline   Reply With Quote
Old 05-05-2015, 05:27 PM   #11
Jeepwm69
Registered User
 
Join Date: Jan 2009
Location: Arkansas
Posts: 687
Re: Another junkyard rescue

Wow, you really scored then!
Jeepwm69 is offline   Reply With Quote
Old 05-06-2015, 01:26 AM   #12
deth_1970
Registered User
 
deth_1970's Avatar
 
Join Date: Jul 2004
Location: Braggs, okla
Posts: 161
Re: Another junkyard rescue

with it pulling, I would pull the tire it is pulling to, check the rotor, brake pads, and remove dust cap for wheel bearings, inspect the grease, dirty, caked, dried out etc
__________________
78 dualy crew cab wife calls "the beast"
79 silverado "yeller"
99 tahoe
02 Gmc sierra
deth_1970 is offline   Reply With Quote
Old 05-06-2015, 01:27 AM   #13
deth_1970
Registered User
 
deth_1970's Avatar
 
Join Date: Jul 2004
Location: Braggs, okla
Posts: 161
Re: Another junkyard rescue

really nice save
__________________
78 dualy crew cab wife calls "the beast"
79 silverado "yeller"
99 tahoe
02 Gmc sierra
deth_1970 is offline   Reply With Quote
Old 05-06-2015, 12:13 PM   #14
RastaRobb
Registered User
 
RastaRobb's Avatar
 
Join Date: Sep 2011
Location: Sweet, ID
Posts: 157
Re: Another junkyard rescue

Would truly have been a shame to destroy something of value--way to common today. (Cash for clunkers) I'd drive that clunker any day!
RastaRobb is offline   Reply With Quote
Reply

Bookmarks


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 02:50 PM.


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