Realize the potential in your C7 Z06 with this stout 377” workhorse. Composed of forged internals and treated to a host of significant top end upgrades, track days with this brawn long block will never be the same. Keeping the stock forged LT4 crank, we open up the bores to 4.070" and fill with custom forged Diamond pistons. Next we connect the two using 6.125" Callies Ultra rods and .200" wall heavy duty pins. This proven combo will open untapped horsepower in your Z06 while retaining the factory piston oil squirters.