Please help

Reply Subscribe

Thread Tools

Search this Thread

Apr 19, 2026 | 04:27 PM

luv2rev64

Thread Starter

4th Gear

Joined: Apr 2026

Posts: 4

Likes: 0

Please help

I've inherited a 3899143 differential and can't figure out what type of side yokes are on it? I know that it's setup for drag racing with a spool and Richmond gears. Any help with identifying the side yokes would be greatly appreciated!
Thanks, ed

Apr 19, 2026 | 08:24 PM

MelWff

Race Director

Joined: May 2006

Posts: 18,664

Likes: 2,564

Send an email to Gary Ramadei at Gtrvette1999@gmail.com

Apr 20, 2026 | 11:33 AM

drwet

Melting Slicks

Joined: Dec 2009

Posts: 3,223

Likes: 651

From: Thunder Bay

Not Corvette parts.

Apr 20, 2026 | 01:11 PM

sunflower 1972

Melting Slicks

Joined: Sep 2016

Posts: 2,194

Likes: 957

From: Wauconda IL

Quote:

Originally Posted by drwet

Not Corvette parts.

You're wrong. https://www.ebay.com/itm/146538039772

Apr 20, 2026 | 01:44 PM

drwet

Melting Slicks

Joined: Dec 2009

Posts: 3,223

Likes: 651

From: Thunder Bay

Quote:

Originally Posted by sunflower 1972

You're wrong. https://www.ebay.com/itm/146538039772

Of course the case is Corvette.

The OP is interested in the output yokes. Those are not from a Corvette.

Apr 20, 2026 | 01:48 PM

Paul Borowski

Team Owner

Joined: Aug 2000

Posts: 21,438

Likes: 458

From: Massillon,Ohio USA

2020 C3 of the Year Finalist - Unmodified

Cruise-In VI Veteran

St. Jude Donor '08-'09-'10-'11-'12

...I thought there was a company called Tom's Rearends that did heavy duty C3 drag racing rearends. Maybe these are their yokes?

Apr 20, 2026 | 01:50 PM

luv2rev64

Thread Starter

4th Gear

Joined: Apr 2026

Posts: 4

Likes: 0

Thanks Paul,
You're the second person that's mentioned Tom.

Apr 20, 2026 | 01:52 PM

MelWff

Race Director

Joined: May 2006

Posts: 18,664

Likes: 2,564

Quote:

Originally Posted by luv2rev64

Thanks Paul,
You're the second person that's mentioned Tom.

Did you email Gary?

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Joe Kucinski

8 Coolest Corvette Pace Cars (and Replicas) of All Time

Verdad Gallardo

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Joe Kucinski

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Verdad Gallardo

Top 10 Corvettes Coming to Mecum Indy 2026!

Brett Foote

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Michael S. Palmer

10 Revolutionary 'Corvette Firsts' Most People Don't Know

Joe Kucinski

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Michael S. Palmer

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Joe Kucinski

10 Most Common Corvette Problems of the Last 20 Years!

Joe Kucinski

Apr 20, 2026 | 02:04 PM

luv2rev64

Thread Starter

4th Gear

Joined: Apr 2026

Posts: 4

Likes: 0

Hi Mel,
Yes and thank you. Looks like they're heavy duty drag race yokes/spindles.
Thanks, ed

Apr 20, 2026 | 02:26 PM

#10

sunflower 1972

Melting Slicks

Joined: Sep 2016

Posts: 2,194

Likes: 957

From: Wauconda IL

Quote:

Originally Posted by drwet

Not Corvette parts.

Quote:

Originally Posted by drwet

Of course the case is Corvette.

The OP is interested in the output yokes. Those are not from a Corvette.

With all due respect, your original post made absolutely no mention of the output yokes. You need to clarify and be specific.

Apr 20, 2026 | 02:32 PM

#11

luv2rev64

Thread Starter

4th Gear

Joined: Apr 2026

Posts: 4

Likes: 0

Thanks Sunflower, Sorry for the confusion!
Thanks, ed

Apr 21, 2026 | 07:50 AM

#12

gbvette62

Race Director

Joined: Oct 2000

Posts: 12,639

Likes: 3,102

From: Shamong, NJ

Quote:

Originally Posted by sunflower 1972

With all due respect, your original post made absolutely no mention of the output yokes. You need to clarify and be specific.

His original post said he "can't figure out what type of side yokes are on it", and "Any help with identifying the side yokes would be greatly appreciated" how much more specific could he be?

Apr 21, 2026 | 10:14 AM

#13

Rebelyell

Drifting

Joined: Jun 2025

Posts: 1,633

Likes: 575

Quote:

Originally Posted by Paul Borowski

...I thought there was a company called Tom's Rearends that did heavy duty C3 drag racing rearends. Maybe these are their yokes?

Tom Watt, the late Tom Watt, owned and operated vaunted Tom's Differentials.
Sadly, the company has since closed its doors for business.

Seems Gary Ramadei acquired much of Tom's more popular shelf stock and designs.

****
https://www.shermancampbell.com/obit...arles-tom-watt

https://bonnercountydailybee.com/new...es-tom-watt-7/

Last edited by Rebelyell; Apr 21, 2026 at 10:29 AM.