1972 Chevy S-10 “Floating” manual gear shifter

Tiny
HARDCYTR
  • MEMBER
  • 1972 CHEVROLET S-10
  • V8
  • 2WD
  • MANUAL
  • 200,000 MILES
I have a 1972 Chevy C-10 PU
(No C-10 on menu so I put this in under S-10)

350 CI, 4-Barrel Carb, 3 on the column manual transmission
No A-C, no power steering, no power brakes

Every once in a while when I am shifting gears, the shifting lever seems to land in "˜no man’s land.’ This first happened years ago and then did not recur for quite a while. I has now happened twice in the last week.

The first time I came to a stop light and shifted from 2nd into what I thought was neutral. While sitting stopped at a red light I heard a rattling sound that I could not readily place. The sound got progressively got louder (higher in pitch) and I think th eshifting lever started to vibrate. When I moved the shifting arm it seemed to be outside the normal "˜H’ pattern. By moving the arm around, I was able to get into 1st gear and move along without incident.

The second time I think I was trying to shifted out first into neutral after coming to a slow-speed stop. This time the gears for 1st remained engaged (which I was able to override by keeping the clutch engaged). I got off the road and was able to eventually get into neutral and return to the normal "˜H’ pattern.

I looked at the linkage coming from the shifting arm (in front of the firewall, inside the engine compartment) but did not see anything that looked particularly abnormal (no bent parts / no abnormal wear that I could see).

The rattling sound makes me think that the problem is associated with the transmission gears. I think it’s been 20 years or so since I have had the transmission worked on.

Any thoughts / suggestions as to diagnostic steps I may take. Are there adjustments that a mid-level gear head could attempt?
Do you
have the same problem?
Yes
No
Thursday, March 4th, 2010 AT 3:38 PM

4 Replies

Tiny
HMAC300
  • EXPERT
Before going into the transmission, check the bottom of the column where it shifts. There may be a couple of bolts that will let you adjust the collar so the shifter linkage can be tightened up. If not it may be worn there or the bushings on the arms going to the trans may be worn out. Check the shifter arms on the column by seeing if the arms will move in or out indicating wear in the coldumn. Those parts are replaceable. You can go to lmc truck, they are on the web to get your parts.
Was this
answer
helpful?
Yes
No
Saturday, March 6th, 2010 AT 7:40 PM
Tiny
HARDCYTR
  • MEMBER
Thank you for the response - what you suggest sounds like the right plan.
I will let you know what I find out when I get a chance to check it out.
Was this
answer
helpful?
Yes
No
Wednesday, March 10th, 2010 AT 12:16 PM
Tiny
HARDCYTR
  • MEMBER
Mr. Mac - strong work! The problem was a worn out(40-year old) bushing on the 1st-2nd gear linkage that allowed for excessive play.

I have had no luck finding replacement bushings; checked w/ LMC & Dorman and multiple suppliers on the internet. The bushings at the local parts stores all have bores that are too narrow. If anyone has a supplier recommendation, I would appreciate your help.

If OEM replacement bushings are no longer available, I would appreciate any advice as to how best to make a replacement (possibly by altering a similar part).

P.S. Mr. Mac: the bike in the photo on your page is sweet!
Was this
answer
helpful?
Yes
No
Saturday, February 26th, 2011 AT 10:10 PM
Tiny
HMAC300
  • EXPERT
Try classic chevy I think is the name and they make chevy parts as well. Or just type in 1972 chevy truck parts in your search engine and a few places besides LMC and dorman may pop up. If they are steel/brass bushings I think there may be some hurst ones you migh try that work. If not you could always have some made up to fit.
Was this
answer
helpful?
Yes
No
Saturday, February 26th, 2011 AT 11:21 PM

Please login or register to post a reply.

Recommended Guides