3 Speed Floor Shift Conversion Issue

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

JRenegade_1

Junior Member
Joined
Jun 16, 2022
Posts
6
Reaction score
9
Location
Norton, MA
First Name
Chris
Truck Year
1984
Truck Model
C10
Engine Size
4.1L I-6 250
Hello All,

I've recently gotten back into getting my 84 C-10 back on the road - it was gifted to me by my father who acquired it 10+ years ago, but only drove it a handful of times after he was stranded when the column shift linkage failed (don't recall what exactly happened).

I've never driven this truck personally (although i've taken a few rides in it), but a couple of years ago my father and I spent an afternoon converting it to floor shift with a Hurst Mastershift 3 Speed Manual Shifter (purchased new with the correct linkage kit), because I wanted something a little more reliable than the column shift. And, after we installed it, the truck sat some more because my daughter was born the next day.

But here I am, looking to get this baby back on the road! And, my dad and I are now realizing that after we installed the floor shifter, 2nd and 3rd gear (Which on the floor would be over to the right and up for 2nd, and then straight down from there for 3rd) were reversed - meaning, 2nd gear would be where 3rd gear SHOULD be, and vice versa.

I can't for the life of me figure out why that could be. From my father's recollection (which, sometimes isn't the best) the shift pattern on the column was correct (On the column - In toward the driver, up for reverse, straight down for 1st, up and out for 2nd, then down to 3rd). There are only two levers on the transmission, one which controls Reverse and 1st, the other for 2nd and 3rd. Oddly enough, Reverse and 1st gear are catching in the correct pattern.

Has anyone run into this issue before, or have any insight? Could it be we simply installed the floor shifter incorrectly? Or, is it possible that there was / is something reversed inside the transmission all along (say, a previous owner tried to rebuild the transmission, and put 2nd gear where 3rd gear should be...? Can that even happen? Pure speculation here).

Any guidance that could be offered would be greatly appreciated. Thanks!!
 

Rickf

Full Access Member
Joined
Jul 29, 2017
Posts
570
Reaction score
711
Location
Grafton NH
First Name
Rick
Truck Year
1974, 1954 & a 1937
Truck Model
K20
Engine Size
350
Are the linkage ears on the side cover pointed in the proper direction?
 

JRenegade_1

Junior Member
Joined
Jun 16, 2022
Posts
6
Reaction score
9
Location
Norton, MA
First Name
Chris
Truck Year
1984
Truck Model
C10
Engine Size
4.1L I-6 250
Thanks for the input Rick, I appreciate it. I’ll need to get under the truck this weekend and check. I’ll snap some pics and post to this thread.
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,407
Reaction score
28,202
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
Sounds like one of the linkage levers are installed upside down.

Also, normally what causes the original column shifter to get sloppy, bind up and eventually leave you stuck in one gear, is just a simple adjustment procedure that takes just a few minutes.
 

JRenegade_1

Junior Member
Joined
Jun 16, 2022
Posts
6
Reaction score
9
Location
Norton, MA
First Name
Chris
Truck Year
1984
Truck Model
C10
Engine Size
4.1L I-6 250
Thanks for the insight Bucket. I’m planning to get under the truck tomorrow, to see if I can find something installed upside down and backwards.
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,407
Reaction score
28,202
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
If you have a helper shift between 2nd and 3rd gears, you can see which lever is moving. Just flip that one to the opposite direction and adjust the rod length to match.
 

JRenegade_1

Junior Member
Joined
Jun 16, 2022
Posts
6
Reaction score
9
Location
Norton, MA
First Name
Chris
Truck Year
1984
Truck Model
C10
Engine Size
4.1L I-6 250
Thanks Rick and Bucket, I appreciate the insight. I got under the truck this evening and sure enough, the lever for 2nd and 3rd gear is upside down.

I’ll have to get that sorted this week. I did take the truck for a spin this evening for the first time (it’s always been towed, or driven by my father) and although the gears were reversed, I have to say it was glorious. I have some more things to sort out, which I plan to comb through these forums for more info, but again, thank you both for your insight.
 

Attachments

  • B180978D-F56A-442C-A92C-D22DDCC2C6C3.jpeg
    B180978D-F56A-442C-A92C-D22DDCC2C6C3.jpeg
    125.3 KB · Views: 165

justhorns

Full Access Member
Joined
Jun 1, 2022
Posts
293
Reaction score
783
Location
Denver
First Name
Lee
Truck Year
81
Truck Model
C10
Engine Size
250
Here you go, this is what it should look like.. This photo was from new clutch swap, and shows all
 

Attachments

  • Ralph the Chevy c10 - 1 of 1 (1).jpeg
    Ralph the Chevy c10 - 1 of 1 (1).jpeg
    132 KB · Views: 205

mikeoverland

Full Access Member
Joined
Oct 24, 2021
Posts
142
Reaction score
253
Location
san antonio tx
First Name
michael
Truck Year
1981
Truck Model
C10
Engine Size
250/I6
Thanks for posting the picture of what the linkage should look like. Now to fix my linkage and floor shifter this weekend.

Mike Overland
Leon Springs Tx
owner of the 1981 C10 known as the basket case
 

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
5,385
Reaction score
8,590
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
Here you go, this is what it should look like.. This photo was from new clutch swap, and shows all
Do you have any more pics of that? I have the shifter,new off ebay. No brackets at all. I'll have to make them. Thanks
 

justhorns

Full Access Member
Joined
Jun 1, 2022
Posts
293
Reaction score
783
Location
Denver
First Name
Lee
Truck Year
81
Truck Model
C10
Engine Size
250
Here is what I have. Let me know of other angles you want.
 

Attachments

  • Ralph the Chevy c10 - 1 of 2 (1).jpeg
    Ralph the Chevy c10 - 1 of 2 (1).jpeg
    139.5 KB · Views: 153
  • Ralph the Chevy c10 - 2 of 2 (1).jpeg
    Ralph the Chevy c10 - 2 of 2 (1).jpeg
    134 KB · Views: 111
  • Ralph the Chevy c10 - 1 of 1 (5).jpeg
    Ralph the Chevy c10 - 1 of 1 (5).jpeg
    99.9 KB · Views: 111

Latest posts

Forum statistics

Threads
44,082
Posts
949,035
Members
36,161
Latest member
CJCatcher
Top