• U-Joints - Aluminum Driveshafts
  • U-Joints - Aluminum Driveshafts
  • U-Joints - Aluminum Driveshafts
  • U-Joints - Aluminum Driveshafts

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  1. #1
    U-Joints - Aluminum Driveshafts
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    Default U-Joints - Aluminum Driveshafts

    I have the factory aluminum driveshaft and halfshafts in my 1986. I need to replace the U-Joints. I see that there are optional anti-galvanic U-joints available for this application. Has anybody had experience with these, are they absolutely necessary.
    1986 "Bright Red" COUPE - Aluminum Heads,
    Sport Seats, Bose, Ultra-Flo Exhaust,
    Automatic, Bilsteins - "Mostly Original" otherwise.


  2. #2
    U-Joints - Aluminum Driveshafts TedC's Avatar
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    From other posts I've read the answer is no. When I replaced them on my 1988 they did have the special coating, synthetic grease, and no grease fittings. Cost me around $18 each at AZ for the "gold". The hardest part of the job was getting the old joints out of the shafts.

  3. #3
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    Quote Originally Posted by The Car Whisperer View Post
    I have the factory aluminum driveshaft and halfshafts in my 1986. I need to replace the U-Joints. I see that there are optional anti-galvanic U-joints available for this application. Has anybody had experience with these, are they absolutely necessary.
    While not absolutely necessary there are several choices available that do have the correct coating, copied below is some information that should help locate some.

    C4 Corvette U-Joint Information
    The C4 u-joints are 1310 series for the driveshaft (2 required) and 1350 series
    for the half-shafts (4 required).

    Within the 1310 and 1350 series there are u-joints intended for use with steel
    yokes and others intended for use with aluminum yokes. The Corvette requires
    u-joints intended for aluminum yokes. These are specially coated to help prevent
    or delay galvanic corrosion which occurs between dissimilar metals like the steel
    u-joint and the aluminum yokes.

    The preferred Spicer u-joints are the

    5-786X for aluminum driveshaft (1310 series)
    5-800X for aluminum half shafts (1350 series)

    However, these parts seem increasingly difficult to source. The numbers appear
    listed as 'Unknown' on the Dana/Spicer website compared to other numbers that
    display as either 'Active' or 'Discontinued'. I wrote to Dana/Spicer to ask about
    the status of these parts but I have yet to receive a reply.

    It appears that Spicer vendors are telling buyers to accept u-joints intended for
    steel drive and half-shafts (apparently without explaining the differences
    or possible consequences)

    5-785X for steel driveshaft (1310 series)
    5-799X for steel half shafts (1350 series)

    As an alternative to Spicer u-joints, there are the following

    ACDelco

    ACDELCO Part # 45U0405 {#89049306}
    JOINT KIT,PROP SHF FRT/RR UNIVERSAL -; OPTIONAL ANTI-GALVANIC U-JOINT FOR USE IN
    ALUMINUM YOKES; PREMIUM; DIAGRAM I, POSITION 1 & 2 - REFERENCED IN PAPER CATALOG

    ACDELCO Part # 45U0400 {#89049301}
    JOINT,RR WHL DRV SHF INR/OTR UNIVERSAL -; LEFT/RIGHT HAND; OPTIONAL ANTI-GALVANIC
    U-JOINT FOR USE IN ALUMINUM YOKES; PREMIUM; DIAGRAM I, POSITIONS 3 to 6 - REFERENCED
    IN PAPER CATALOG



    Neapco

    NEAPCO ("Brute Force with AlumiGuard")

    Corrosion-Resistant High-Performance U-Joints for Aluminum Driveshafts
    Neapco # (Premium) Description
    1-0626BF: 1310 Aluminum U-Joint (Driveshaft)
    2-0617BF: 1350 Aluminum U-Joint (Half-shaft)

    Neapco also offers standard performance u-joints for aluminum shafts
    1-0153BF: 1310 Aluminum U-Joint (Driveshaft)
    2-0053BF: 1350 Aluminum U-Joint (Half-shaft)

    Rockford Driveline is a third source

    Rockford Driveline

    There appears to be two versions of the coated driveshaft and
    half-shaft u-joints. I have no information beyond part numbers.

    Rockford # Description
    K153A & K467A: 1310 Aluminum U-Joint (Driveshaft)
    K178A & K447A: 1350 Aluminum U-Joint (Half-shaft)

  4. #4
    U-Joints - Aluminum Driveshafts TedC's Avatar
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    Used the standard performance Neapco for AL shafts. Part number is different than the one listed above (maybe just a revision).

    Part Number: 2-0053DG
    Weight: 1.65 lbs
    Warranty: LLT
    Application: Half shaft
    Journal Cross: Solid-forged & Dura-coated
    Bearing Cup Finish: Anti-corrosive Coating Applied
    Snap Ring Finish: Anti-corrosive Coating Applied
    Nitrile Rubber Seal: Yes
    Seal Color: Yellow
    Maintenance-Free Type: Yes
    Includes: Snap Ring, 4 pcs/set

    Features & Benefits:
    Never Needs Greasing - factory-filled with synthetic lithium grease. Solid-forged cross body to increase joint strength for rigorous loads. Precision ground needle bearings for higher load carrying capacity. Nitrile rubber seal engineered to reduce seal surface friction. AlumiShield applied to bearing caps and hardware to prevent damage to aluminum driveshafts.

  5. #5
    U-Joints - Aluminum Driveshafts
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    This is why this forum is so valuable to me! Thanks for the incredible response. I should be able to find a local source for these parts now that you have supplied me with the part numbers I need.
    1986 "Bright Red" COUPE - Aluminum Heads,
    Sport Seats, Bose, Ultra-Flo Exhaust,
    Automatic, Bilsteins - "Mostly Original" otherwise.


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