https://hotrodhotline.com/forsale/vehicles/buick/gs/1968 1968 Buick GS for sale on Hotrodhotline https://hotrodhotline.com/forsale/vehicles/buick/gs/1968/listing/251661 Route 61 Classics in Pennsylvania is proud to offer this 1968 Buick GS400 Convertible for sale, a striking muscle-era convertible that combines timeless styling with professionally built Buick big-block performance. Finished in Scarlet Red with a black power convertible top and black interior, this GS400 presents beautifully and commands attention wherever it goes. Under the hood is a 455ci Buick V8, using a correctly disclosed 1970–71 Buick block (casting 1238861). The engine was professionally built with performance and reliability in mind, featuring TA Performance Stage 1 Street Eliminator aluminum heads, Wiseco .040-over forged pistons, ARP fasteners, MLS head gaskets, upgraded valvetrain components, and a performance camshaft. Induction is handled by an aluminum intake manifold topped with a Holley 750 CFM vacuum-secondary carburetor (LIST-3310-3), while ignition duties are managed by an MSD distributor. This combination produces a dyno-verified 428 horsepower and 468 lb-ft of torque, with documentation included - delivering strong street manners, massive torque, and the unmistakable sound Buick big-blocks are known for. Cooling is handled by an aluminum radiator with dual electric fans, and exhaust exits through TA Performance headers feeding a deep-sounding dual exhaust system. Power is sent through a Muncie 4-speed manual transmission to a Buick-specific 8.2" BOP 10-bolt rear axle, preserving the authentic muscle-era driving experience. The suspension remains true to its GM A-body roots, complemented by factory power front disc brakes for confident stopping. This GS400 comes with a binder of receipts and documentation, along with an extensive trophy history from shows and events - a clear reflection of the quality of the build and the pride of ownership. The undercarriage is clean and solid, and the car runs strong, drives well, and presents as a true enthusiast-owned example. If you're searching for a 1968 Buick GS400 Convertible with a 455 V8, 4-speed manual, documented performance, and show-quality presence, this is a standout opportunity. Available now from Route 61 Classics in Orwigsburg, Pennsylvania. https://www.rt61classics.com/vehicles/239/1968-buick-gs400 1968 Buick GS https://hotrodhotline.com/forsale/vehicles/buick/gs/1968/listing/239009 1968 Buick GS400 Convertible – Matching Numbers, Rare Restored Muscle Car A true muscle car rarity, this 1968 Buick GS400 Convertible has been professionally restored to a high standard. With only 2,024 GS400 convertibles built in 1968 out of 133,560 Skylarks, this is one of the most collectible Buicks of the era. Drivetrain & Performance Rebuilt matching-numbers 400ci H.O. V8 – factory rated at 340 HP Rebuilt heavy-duty Turbo 400 automatic transmission Original Posi-Traction HD rear differential – rare and factory-correct Buick’s powerhouse drivetrain – strong, reliable, and authentic Exterior & Interior Finished in correct Code “R” Scarlet Red – professionally detailed with a mirror finish Luxury two-tone interior – striking contrast and period-correct presentation Convertible top in excellent condition Chrome and brightwork restored to show quality Highlights Numbers-matching GS400 convertible – extremely rare and highly collectible One of only 2,024 built in 1968 Professionally restored, documented, and turn-key ready A standout muscle car that blends Buick luxury with raw performance Important Information – Please Read Before Inquiring Vehicle Location: This vehicle is located at our client's home, not in Cadillac, Michigan. Showroom Access: We have a showroom with approximately 35 vehicles, available by appointment only. Contact First: Please call us at 231-468-2809 EXT 1 to speak with one of our representatives before visiting. FREE Consignment – Sell Your Vehicle Fast! List your vehicle effortlessly and get it sold in record time! Easy process High visibility Professional support https://www.classiccardeals.com/Page/Consignment.aspx VIDEO LINK: https://youtube.com/shorts/bt90-hoktzk?si=Xlw8WeDfiuitClwG 1968 Buick GS