Motorsports Unlimited

This engine kit includes everything to build a 400 CID street engine that will produce approximately 550 horsepower. Combine this kit with your machine work and assembly and you can have a complete...

Rotating Assembly Includes, Scat 4340 Forged Crankshaft, JE Or Mahle Forged Pistons, Scat H-Beam Rods And King Bearings. Crankshaft: Scat / PBM Crankshaft Stroke: 3.875" Crankshaft Material : Forged...

This engine kit includes everything to build a 400 CID street engine that will produce approximately 475 horsepower. Combine this kit with your machine work and assembly and you can have a complete...

This engine kit includes everything to build a 400 CID street engine that will produce approximately 415 horsepower. Combine this kit with your machine work and assembly and you can have a complete...

This kit includes everything you need to build your new 383 stroker. Included is a new forged rotating assembly, hydraulic roller cam and lifter set (many grinds to choose from) timing set, PBM...

This is one of our most popular kits we offer. This kit includes everything you need to build your new 383 stroker. Included is a new complete rotating assembly, cam and lifter set (many grinds to...

This engine kit includes everything to build a 540 CID street strip engine that will produce approximately 750 horse power. Combine this kit with your machine work and assembly and you can have a...

This engine kit includes everything to build a complete 565 CID competition drag race engine that will produce approximately 900 horse power. Combine this kit with your machine work and assembly and...

This engine kit includes everything to build a complete 582 CID competition drag race engine. Combine this kit with your machine work and assembly and you can have a complete engine for a fraction of...

Your Chevy small block engine can get a complete upgrade.   Small block engine, major performance improvements High-quality custom-made engine components Everything you need to transform...

Completely Rebuild your Engine Today! This kit is designed to be used in a '96-'01 R VIN code application. These Rotating Assemblies are Completely Balanced at Motorsports Unlimited using our state...

All short blocks are machined and assembled in house, starting with a complete quality control check, the deck surfaces are then squared and blueprinted to assure that both decks are dimensionaly the...

ROTATING ASSEMBLIES READY FOR CRUISING OR RACING! These Rotating Assemblies are Completely Balanced at Motorsports Unlimited using our state of the art, CWT Industries Multi-Bal 5500. Don’t be...

PERFORMANCE ROTATING ASSEMBLIES FROM MOTORSPORTS UNLIMITED FOR STREET TO ALL OUT RACE! These Rotating Assemblies are completely balanced and include everything you need to completely stroke your 350...

This kit includes everything you need to completely rebuild and stroke your LT1 to 383 cubic inches. New crankshaftPistonsConnecting rodsBearingsPerformance camshaft and liftersValve springs and...

  Get a hydraulic roller cam for your new 383 stroker.   New complete rotating assembly Cam and lifter set with many grinds to choose from Timing set Valve springs retainers and...

  Our master engine rebuild kit is sure to increase your Chevy’s performance.   One of our most popular build-an-engine kits Designed with precision and unparalleled...

Get your hands on the most popular Chevy engine kit available.   Premium engine replacement parts made with you in mind Rebuild your engine with peace of mind A complete,...

Rotating Assembly Includes, Scat 4340 Forged Crankshaft, SRP Forged Pistons, Scat H-Beam Rods and King Bearings. Crankshaft: Scat / PBM Crankshaft Stroke: 4.000" Crankshaft Material: 4340 Forged...

Rotating Assembly Includes, Scat 4340 Forged Crankshaft, JE 2618 Forged Pistons, Scat H-Beam Rods and King Bearings. Crankshaft: Scat / PBM Crankshaft Stroke: 3.875" Crankshaft Material : Forged...