Anyone use PST lower control arm shafts?

[1KoolBee]

Working on the front suspension for my 67 GTX clone. Welding up a’70 k frame and adding braces to LCA’s, Skid plate, etc. I only have one pivot shaft, so I was thinking about buying a pair of new LCA shafts from PST for stock bushings. Anyone run those? Did they fit ok? I’ve seen some folks have had trouble with other brands of aftermarket LCA shafts.

 

[dadsbee]

I have a pair on my Bee, bought in 2017. No issue with fit, but don't try to torque the nut to factory spec.

 

[1KoolBee]

I have a pair on my Bee, bought in 2017. No issue with fit, but don't try to torque the nut to factory spec.

Why not?

 

[dadsbee]

Why not?

The threads will strip. It's not that "good old" steel.

 

[1KoolBee]

Hmmm, did the nut strip or the shaft strip? Thanks for the info

 

[dadsbee]

Hmmm, did the nut strip or the shaft strip? Thanks for the info

I felt it start going while torquing and stopped. I wasn't going to take it apart to find out at that point. I suspect the nut would have let go first .

 

[1KoolBee]

I felt it start going while torquing and stopped. I wasn't going to take it apart to find out at that point. I suspect the nut would have let go first .

Thanks!

 

[1KoolBee]

Why not?

I saw on a-bodies only that someone snapped the PST shaft before he got to 100 ft/lbs. sounds like chicom steel works quality. I’m thinking good used oem a better deal.

 

[71RRHI]

I put the greaseable pivot shafts from PST on my 67 Coronet about 1 1/2 years ago. I was able to torque them to spec. Have almost 1000 miles on them no problems so far.

 

[j-c-c-62]

Working on the front suspension for my 67 GTX clone. Welding up a’70 k frame and adding braces to LCA’s, Skid plate, etc. I only have one pivot shaft, so I was thinking about buying a pair of new LCA shafts from PST for stock bushings. Anyone run those? Did they fit ok? I’ve seen some folks have had trouble with other brands of aftermarket LCA shafts.

" adding braces to LCA’s" Ugh...........

 

[dodgeboy440]

" adding braces to LCA’s" Ugh...........

It WORKS !! That’s The Bottom Line !
Mopar2ya !

 

[66 Sat]

" adding braces to LCA’s" Ugh...........

What's the issue with doing this?

 

[dodgeboy440]

What's the issue with doing this?

No issue , just time , parts , patience, proper skill & Money. !

 

[dadsbee]

What's the issue with doing this?

Exactly, some just can't weld cleanly...

 

[66 Sat]

No issue , just time , parts , patience, proper skill & Money. !

I know, I've got them on mine. I was wondering why he would be so bothered by someone boxing them in.

 

[1KoolBee]

Welding up the k-member is a huge PITA. Looks like the factory guy who welded this one up drank a couple six packs before he started. Boxing the LCA’s is easy by comparison

 

[j-c-c-62]

What's the issue with doing this?

Since you asked and there are no stupid questions, there are many issues IMO, I will share the two opposite bookends on the subject, and sharing everything between just gets everyone riled up and I'm on record on this topic for decades:

a. Unless you are on a high banked oval with 2-ton cars running close to 200mph, they serve zero purpose


z. It's mostly a monkey see monkey do solution.


PS I'm a certified welder and been welding for over 5 decades.

 

[1KoolBee]

Ever watched the leading b-body at a dirt track hobby stock race? Leading until LCA collapses? Granted I’m not dirt track racing, but add 500 inches of rowdy six-pack to a 66 satellite and north Idaho potholes, what could possibly go wrong?? I figure better safe than sorry. Its not a big deal

 

[BigFlo]

I’m running the PST greaseable pivot shafts also. 1 year so far and no issues.

 

[j-c-c-62]

Ever watched the leading b-body at a dirt track hobby stock race? Leading until LCA collapses? Granted I’m not dirt track racing, but add 500 inches of rowdy six-pack to a 66 satellite and north Idaho potholes, what could possibly go wrong?? I figure better safe than sorry. Its not a big deal

Never.
And without pictures, it's only a claim in all due respect.
And if the logic is "better safe than sorry", why not make the gusset out of 1/4" or even 1/2" steel and be even safer?

It is a big deal for me, in that proper engineering normally requires the discovery of a problem and defining the problem. an analysis of all the possible solutions that fix that problem, a rational decision on the best solution, and then defining precisely the chosen solution before implementation.

Any pothole that can damage a LCA will result in other severe damage, like maybe tire and wheel failure, bent spindle, bent chassis because LCA bottomed out before failure, etc. and the LCA might be a preferred sacrificial item in lieu of greater damage to the car.