steering knuckle info
Thread Starter
Safety Car
Joined: Dec 2012
Posts: 3,815
Likes: 1,724
From: Summerville SC
steering knuckle info
I have a set of steering knuckles that only have one tie rod end hole in them ( I assume that was a pwr steering set up). No other hole not even one with a plug in it. Any idea what years these might be from? Thx. 
Thread Starter
Safety Car
Joined: Dec 2012
Posts: 3,815
Likes: 1,724
From: Summerville SC
Thank you both. I thought 77 was about the time they switched. My confusion was because my 78 had both holes on each side. One of them was banged up somehow in the past and the replacements I got only had the one hole. I can sleep better tonight with another piece of useless information in my head. Thanks 
Race Director
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From: Sunshine Coast, Queensland, Australia
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Cruise-In VIII Veteran
I don't know about above. I have a Nov 76 build 77 and my still original spindles have only one hole.
Who knows, maybe different batches of spindles came through differently?
Who knows, maybe different batches of spindles came through differently?
Racer
Joined: Sep 2001
Posts: 365
Likes: 93
From: Chesterfield VA
probably this, but I have parted a ton of 68-82 Corvettes and only the single hole were 80-82. GM would use what they had and I would not be surprised if you had one on one side and a double on the other.
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Thread Starter
Safety Car
Joined: Dec 2012
Posts: 3,815
Likes: 1,724
From: Summerville SC
So my question came up because as I said, I replaced the ones that were on the car when I got it ( they had 2 holes) and the ones I picked up only had one hole. No biggie. In the course of my project I ended up putting a Flaming River rack N pinion in the car. Hooked it all up and it seemed OK but although I have enough thread on the end of the tie rods going into the sleeves ( I believe it was 1 1/2 times the diameter of the tie rod) I often thought there should be more. I haven't had the alignment done yet but my toe is pretty close. I made the mistake, which I often do, about thinking...maybe if I had a set with the 2 holes it might give me a little more thread going into the sleeves from the rack. I guess I have enough other things to worry about right now ( just starting to mount my fiberglass bumpers) that I will let this thought go to the back of my mind until I get the actual alignment done and see where I end up. Thanks for all your contributions.
1967 Pedal Car Champion
Joined: Mar 2020
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From: US-PNW
For those unaware, GM put plugs in the outboard holes on the double-hole knuckles when the car was a power steering build. If you think you only have a single inboard hole on an early/mid-C3, look closely for a metal plug. The two holes provide different steering ratios but faster ratio (inner hole) comes with higher effort on a manual steering car.
Race Director
Joined: Apr 2011
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From: North of Toronto - Ontario
So my question came up because as I said, I replaced the ones that were on the car when I got it ( they had 2 holes) and the ones I picked up only had one hole. No biggie. In the course of my project I ended up putting a Flaming River rack N pinion in the car. Hooked it all up and it seemed OK but although I have enough thread on the end of the tie rods going into the sleeves ( I believe it was 1 1/2 times the diameter of the tie rod) I often thought there should be more. I haven't had the alignment done yet but my toe is pretty close. I made the mistake, which I often do, about thinking...maybe if I had a set with the 2 holes it might give me a little more thread going into the sleeves from the rack. I guess I have enough other things to worry about right now ( just starting to mount my fiberglass bumpers) that I will let this thought go to the back of my mind until I get the actual alignment done and see where I end up. Thanks for all your contributions.
M