HorsePower Research

She's a beaut, Clark! This 468ci could be yours! Available to ship or be picked up on the same day of purchase! Feel free to call for any questions you may have!

Horsepower Research specializes in high-performance engine builds engineered to meet exacting standards. From reliable, daily-driven big-cubic-inch LS engines to race-prepped big-cubic-inch endurance combinations, we deliver precision, durability, and proven performance.

At HPR, attention to detail sets our products apart. Our Brodix BR7 cylinder head lineup is engineered to meet the needs of everyone—from mild street applications to maximum-effort drag and endurance racing. Each set features an HPR-designed intake port, precision-ported by Greg Good, along with HPR-designed CHE valve guides available in both 7mm and 8mm configurations.

Our standard BR7 heads are offered with a 285cc intake port, while the BR7 BS models are available in either 285cc or 300cc intake port options. These cylinder heads are currently in stock and ready for assembly. Contact us today to secure yours.

BRODIX Cylinder Heads

Do you have a Dart LS engine project underway and plan to run a windage tray? Horsepower Research offers a proven windage tray mounting solution, in stock and ready for immediate shipment.

You are welcome to call us directly or place an order conveniently through our website.

HPR 468ci LS short block. Built for endurance/road racing and set up for an external dry sump oiling system.
Darton dry sleeved GM LS block
Callies Magnum 8 counterweight crankshaft short snout
Callies Compstar 6.125” H-beam connecting rod
HPR Custom Pistons by Wiseco
Total Seal Rings
Available for immediate shipment or pickup! Contact us today.