When it comes to maximum towing capacities, the LZ0 and L87 are very close. Only 100 pounds (45 kilograms) separate the ...

The engine was none too exotic, based upon a factory production GM No. 511 casting 400 block, featuring a 0.040-inch overbore and a Scat crank delivering the stock 3.75-inch stroke.

By the mid-'70s, the expensive, exotic ZL-1 race engine faded away. Throughout its production run, though, the casting of every ZL-1 aluminum engine block was handled by Winters Foundry.

Race Cast Engineering builds these V-12 heads in-house. As the name suggests, the V-12 LS is a 12-cylinder engine that shares its basic design with Chevy’s iconic small-block.