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× Bidding has ended, reserve was not met, but this vehicle may still be available for purchase! Please call (480) 845-6600 or email [email protected] for more info. Please note that the 6.5% buyer's premium is still required for all post-auction transactions. 
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1968 BUICK GS 400 COUPE

Highest Bid:
$23,000

Ends In:

1968 BUICK GS 400 COUPE

Bid

1968 BUICK GS 400 COUPE

Ended

1968 BUICK GS 400 COUPE

High Bidder:  AlfaTek

Highest Bid: $23,000 (USD)

End Date:


Location:

Brookings, South Dakota 57006

Seller:

Dealer

Engine:

430ci V8

Transmission:

Manual

Odometer:

81,906 (Mi)

Chassis/VIN:

446378B116433

Lot Number:

Highest Bid: $23,000 (USD)

High Bidder:  AlfaTek

Ends In:

End Date:

Listing Views
9,560 Views

If a bid is placed within the last minute of an auction, an additional minute is added to ensure all bidders have a fair chance to bid. Bid carefully. Please complete your vehicle due-diligence prior to bidding. Bids are binding and by placing your bid you agree to our User Agreement and Privacy Policy.

Location:

Brookings, South Dakota 57006

Seller:

Dealer

Engine:

430ci V8

Transmission:

Odometer:

81,906 (Mi)

Chassis/VIN:

446378B116433

Lot Number:

79756379

If a bid is placed within the last minute of an auction, an additional minute is added to ensure all bidders have a fair chance to bid. Bid carefully. Please complete your vehicle due-diligence prior to bidding. Bids are binding and by placing your bid you agree to our User Agreement and Privacy Policy.

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For this Vehicle, Calculate the Costs Of:

If a bid is placed within the last minute of an auction, an additional minute is added to ensure all bidders have a fair chance to bid. Bid carefully. Please complete your vehicle due-diligence prior to bidding. Bids are binding and by placing your bid you agree to our User Agreement and Privacy Policy.

Vehicle Story

OVERVIEW

This 1968 Buick GS400 is powered by a rebuilt 430ci V8 mated to a four-speed manual transmission. Finished in Regal Black over a white vinyl interior, this coupe is now offered by the selling dealer with repair receipts and a clear title.

Highlights

  • One of 10,743 GS400 Coupes built by Buick in 1968
  • Underwent restoration in 2021
  • Performance-enhanced 430ci V8

Ownership History                                                                            

  • Offered by a dealer
  • Current location: South Dakota 

EXTERIOR

  • Regal Black paint 
  • Red side stripe 
  • Chrome fender flares 
  • Driver-side chrome mirror 

WHEELS AND TIRES                                                                                   

  • 15-inch US Mags wheels
  • 235/60 Mickey Thompson Sportsman S/T radial tires

INTERIOR

  • White vinyl upholstery
  • Bucket seats
  • Floor-mounted Hurst manual shifter 
  • Power steering 
  • Aftermarket speaker system
  • Aftermarket Alpine stereo
    • AM/FM
    • CD player
    • USB
    • Auxiliary
    • SiriusXM capable
    • Bluetooth compatible

Updates

  • New seat covers 

INSTRUMENTS

  • Gauges
    • 120-mph speedometer
    • Fuel 
  • Column-mounted Sunpro 8,000-rpm tachometer 
  • Bosch auxiliary gauges
    • Oil pressure
    • Temperature
    • Voltage 
  • Odometer shows 81,906 miles
    • Title reads mileage-exempt

ENGINE AND TRANSMISSION

Engine

  • 430ci V8
    • Four-barrel carburetor 
    • Edelbrock intake manifold 
    • MSD ignition 

Transmission

  • Four-speed manual

Service History Highlights 

  • Engine was rebuilt in 2021
  • Original engine replaced
  • The following has been replaced
    • Heater core
    • Heater controls
    • Oil pan gasket 

UNDERCARRIAGE, SUSPENSION, BRAKES, AND EXHAUST                              

  • Power front disc brakes 
  • Dual exhaust system 

Service History Highlights 

  • Rear main seal has been replaced 

KNOWN IMPERFECTIONS

  • Minor paint chip "size of a quarter" on the roof according to the seller 

ITEMS INCLUDED WITH THE VEHICLE 

  • Repair receipts 

 

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Comments & Questions

November 12, 2025
11:10 AM

BID: $23,000

November 12, 2025
11:08 AM
GTH

BID: $22,000

November 12, 2025
08:19 AM

BID: $21,000

November 11, 2025
12:46 PM
GTH

BID: $20,000

November 11, 2025
08:06 AM

BID: $18,500

November 10, 2025
10:20 AM

BID: $18,000

November 10, 2025
08:33 AM
Seller

@gbstarkey – Does this car have working AC Thanks Gary ...

non AC car

November 10, 2025
08:32 AM

BID: $17,000

November 10, 2025
08:24 AM

Does this car have working AC Thanks Gary

November 07, 2025
10:37 AM

BID: $16,500

November 07, 2025
09:01 AM
Seller

@RichardAnderson – I like to talk to the dealership that is holding the car at this point questions I have about bodywork, etc. ...

Call me at (605) 695-7391. Dirk

November 07, 2025
08:53 AM

BID: $16,000

November 07, 2025
07:50 AM
Bidder

I like to talk to the dealership that is holding the car at this point questions I have about bodywork, etc.

November 07, 2025
07:43 AM

BID: $15,500

November 06, 2025
01:58 PM

BID: $15,000

November 05, 2025
07:53 PM
Seller

@Mikebonjon – Can I see a bigger picture of the blemish spot on the roof as it is tough to see what it looks like please? ...

Probably 2” long

November 05, 2025
02:08 PM

BID: $14,500

November 05, 2025
02:06 PM
Bidder

Can I see a bigger picture of the blemish spot on the roof as it is tough to see what it looks like please?

November 05, 2025
03:52 AM

BID: $14,000

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