416 4.00 stroke sleeved block 900-1600 Hp GM LT 620" Compression Ratio: 10

620" Compression Ratio: 10

fit in house and  hand assembled as ordered to insure order accuracy

The rotating assemblies are dynamic  balanced to racing specifications and rings file fit to your specific application then meticulously assembled into the block

6 engines are the proper foundation to add  horsepower with reliability  to your high performance vehicle

Crankshaft journals polished to 2 Ra or better surface finish

416 4.00 stroke sleeved block 900-1600 Hp GM LT 620" Compression Ratio: 10MBRE completely machines balances and assembles these engines in house with the same 4340 crankshafts 4340 Hbeam rods and forged pistons as all of our combinations. By sleeving these blocks we have had the best reliability for higher Hp builds. We stock sleeves and components for quick delivery.