Another Coil Spring Thread?!? Why?!?
Both holes are tapered, You can buy the 7* taper reamer online. About .640" at one end, and .540" at the other, .750" away.
The two main holes are almost exactly 1" apart.
I am sure you could just drill it out on a drill press or lathe. And then taper the hole.
I can go measure my originals if you need exact measurements.
Can you enlighten me on the Borgeson conversion?
Specs / parts research both show Borgeson and Saginaw at 16:1 (stock ratio for non-P/S).
I’ve got a Saginaw box and was considering a rebuild. But if there’s a clear advantage to the Borgeson, I’d put that on the “considerations list”.
Thanks for the input on tie rod location - I had a feeling it wasn’t as extreme as I suspected. You make a strong case for 2-hole, and I can experiment with the feel.
Both holes are tapered, You can buy the 7* taper reamer online. About .640" at one end, and .540" at the other, .750" away.
The two main holes are almost exactly 1" apart.
I am sure you could just drill it out on a drill press or lathe. And then taper the hole.
I can go measure my originals if you need exact measurements.
I'm looking at 3948877-8 knuckles, and can’t find part numbers for “1969 2-hole”, but if they’re close enough, why not…?
[A.I.M. has the spindle-knuckle combo listed; J174, 3953407-8, but no break-down of spindle# and/or knuckle# … and I’ll get to #’s on my Kentucky Fried front end once it’s out.]
Any rec on a good brand of 7° taper?
[BTW, for those of us on iPhone, long-hold the ‘0’ (Zero) on the number pad -> gives you the degree ‘°’ sign, same with capital ‘A’ if you ever need to use ‘Æ’ …among others]
Can you enlighten me on the Borgeson conversion?
Specs / parts research both show Borgeson and Saginaw at 16:1 (stock ratio for non-P/S).
I’ve got a Saginaw box and was considering a rebuild. But if there’s a clear advantage to the Borgeson, I’d put that on the “considerations list”.
Thanks for the input on tie rod location - I had a feeling it wasn’t as extreme as I suspected. You make a strong case for 2-hole, and I can experiment with the feel.
Correct me if I’m wrong, but I'd still need:
- P/S brackets
- Reservoir / Pump & Pulley
- Add’l 3rd track pulley for the Crank (?)
- Belt
- and some of the kits come with hoses, pump, brackets (?), etc… for install
And then there’s the rag-joint / coupler + ‘collapsing the column’ portion of the install [if I read that correctly, here on the forum - sorry, no link at the moment].
So it’s a bit more than I initially thought …or is it?
I'm not opposed to keeping the manual-steer for now, so the Borgeson sounds like a nice upgrade plan in the future.
If (IF) I did decide to go that route…
Has anyone done that upgrade WITH a hydroboost system, too?
We're getting into strange (but curious) territory here…
And I’m only asking about the hydroboost* bc I’ve seen the vacuum booster conversions and “cut n drill the firewall” is not in my plans.
*Hydratech makes kits for non-power/brakes that install in the stock location; I’ve already talked to them, and am considering that …in the future.














