We build superior Buick automotive engines and make it available to you at approximately 50% off the Buick dealer price. Our Buick GS 400 discount motors come with a 7-year or 100,000 mile warranty. Do you know any Buick engine rebuilder or dealer that can bit this promise? Probably, not. Our remanufactured Buick GS 400 engine's warranty exceeds by far the original manufacturer warranty provided by GM dealers nationwide. We encourage you to visit your local Buick dealers and compare our pricing, quality and warranty on a Buick GS 400 engine. We also encourage you to visit our testimonials page and read what other Buick GS 400 engine buyers think about our HiPerformer engine, its quality and most important the world-class customer support offered by the HiPerformer team. Buy your rebuilt Buick GS 400 engine with confidence knowing your Buick engine block was manufactured by top-notch certified machinists, all the moving parts have been replaced with new Buick parts and finally the Buick motor passed a rigorous testing to comply with the OEM specifications of GM.

Are you restoring your Buick GS 400 car/truck? Try the reliable HiPerformer power engine for any Buick car or truck restoration, repair or any custom upgrade for your Buick GS 400 automobile. Think twice before you buy rebuilt Buick GS 400 engines from another supplier. Many of the Buick rebuilt engines using refurbished or used parts inside the engine block. The HiPerformer engine built to improve the performance of your Buick GS 400 vehicle or the application that utilizes the Buick engine as a power solution. Restoring an antique or classic Buick car or truck is tedious and lengthy process. We guarantee the quality of our Buick GS 400 engine. HiPerformer offers unprecedented warranty of 100,000 mile or 7-year on its Buick passenger car rebuilt engine. The HiPerformer team helped thousands of do-it-yourselfers restoring their automobiles. Go with the best, install the HiPerformer GM engine on your Buick GS 400 vehicle.

We offer a wide range of Buick performance engine accessories, cylinder heads and quality replacement engine long blocks for all the Buick GS 400 car, truck and power applications. These Buick small or big block applications may come with additional performance option. If you want more power on your Buick GS 400 automobile, just tell us your power or performance requirements you need on your new car or truck engine and we will rebuild a motor that meets or exceeds your performance requirements. To inquire about our GS 400 performance options, please send us your Buick GS 400 engine block casting, crankshaft casting and the VIN of your Buick vehicle. We will let you know what advanced power options are available for the Buick GS 400 motor. Buy the HiPerformer Buick GS 400 engine today and save big money!