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  #31  
Old 04-30-2014, 12:41 PM
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Quote:
Originally Posted by BBShark View Post
You could co that Gene but you would lower it at least 3 inches. Thats has it's own problems
So maybe cut/weld a new end on the lower control arm??? just seems simpler than going hog wild with money or modifying cast spindles, etc....rather weld a hunk of stamped steel and get it right the easy way....NO??

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  #32  
Old 01-27-2019, 06:33 PM
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Default Rehash - Reopen/Revive old thread...

Wondering if anyone has the details on the C4 front hub/spindles? if that would get to a drop - although some geometry to work out too.



BBShark has some nice CAD work for the C3 spindle -

but I can't find a C4 front hub/spindle CAD or dimensioned drawing to save me.

Also wondering if anyone has seen these over at Jegs and if they might fill the bill?

Attached Images
File Type: jpg c4 knuckle.jpg (49.1 KB, 3 views)
File Type: jpg c3 front spindle - hub.jpg (141.3 KB, 2 views)
File Type: jpg JEGS 2 INCH DROP.jpg (51.5 KB, 2 views)
File Type: jpg JEGS 2 INCH DROP SIDE.jpg (26.4 KB, 1 views)
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Last edited by phantomjock; 01-27-2019 at 06:40 PM..
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  #33  
Old 01-27-2019, 11:07 PM
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OK - I may have found a workable approach to this . Seems that a number of Chevys use the same Ball Joints, so the issue becomes which one you'd want to use, then see if you can source a dropped spindle for that model Chevy.

You could also retaper the spindle mount, but that is more work and machine shop time.

Here is a table I found that might be of use to others:



The 58-70 Caprice, Impala, Bell Air, and Biscane all share the same upper and lower Ball Joints as the 63-82 Corvette! Note the unit available a Jegs I posted earlier "looks" like you could remove the spindle and re mount it lower to get less than 2 inches drop.

"Case Closed!" YMMV.

Cheers - Jim
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  #34  
Old 01-27-2019, 11:49 PM
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Looks like it will work, but will it actually work

The *potential* KPI and ackerman differences could negate the benefit of the IC correction
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  #35  
Old 01-28-2019, 10:35 AM
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The KPI looks to be about 3 degrees different between the JEGS spindle and the C3 (using jpeg measurement from the model of the C3 that BBShark did) Jegs version is 3 degrees "steeper."

RideTech has one they sell for the C3 that also raises the upper Ball Joint. They claim a huge improvement in Ackerman. But, you'd need to invest 400 bucks on that bet.

I've got a PM to Mike (69427) regarding his C4 front end mod. We'll see what he's found out.

Cheers - Jim
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  #36  
Old 01-28-2019, 11:12 PM
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Quote:
Originally Posted by phantomjock View Post
The KPI looks to be about 3 degrees different between the JEGS spindle and the C3 (using jpeg measurement from the model of the C3 that BBShark did) Jegs version is 3 degrees "steeper."

RideTech has one they sell for the C3 that also raises the upper Ball Joint. They claim a huge improvement in Ackerman. But, you'd need to invest 400 bucks on that bet.

I've got a PM to Mike (69427) regarding his C4 front end mod. We'll see what he's found out.

Cheers - Jim
The tall ball joints are available. Howe’s racing.

Can you find an Impala dropped spindle? Edit: looks like you can, 1969 is the year I think.

Last edited by rtj; 01-28-2019 at 11:18 PM..
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  #37  
Old 01-29-2019, 12:46 AM
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Right - I have the Howe's. Think the "screw-in" versions I got from Colemans. The Moog K5108 is the part as best as I recall.

I think the "mix" is between the several interfaces. First the UCA/LCA to the screw-in Ball Joints (that must be picked to match the spindle). Then the spindle that is picked for KPA, drop, and Ackerman! Then, the Wheel/Tire combo - to house the gear, and then all that stirred in a witches brew to get favorable handling.

The Jegs (and others similar available) might be close enough to do a quick trial if can keep in the lower cost range (trial a less than 150).

I've looked at C5 and C6 hubs and there is not much change in spindle height - if any. C4 - still TBD. The whole thing I'm "worrying here" is the 2" raise I did to the differential. OOPS - now need to work the front end! The big difference using C5/6 on front end seems in the CA angles, lengths, etc, not in this aspect.

So what next... I'm waiting to get some words with 69427 who has done a few C3s to C4 front end mods. And, get up the "nerve" to drop some cash on Suspension Pro! It's just nearly time to do that.

Cheers - JIm
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