"Of course, functionality was the priority when we designed the block," says World Products' Bill Mitchell. "But when you look at those ribs and the aluminum finish, you couldn't help but say, 'wow, that looks cool!'"
Like the iron Motown blocks, the aluminum version has a 9.025-inch deck height, four-bolt mains and it accepts all OE-type accessories. World has a unique way of inserting the steel cylinder liners, too, which prevents oil from being drawn between them and the aluminum bores.
"That oil acts as an insulator and prevents the aluminum from transferring heat from the steel liners," says Mitchell. "It's an issue with all aluminum blocks, but we've solved it."
The Motown Lite block has maximum bore of 4.125 inches, allowing for a maximum engine displacement of 427 ci. Mitchell says a fully dressed engine, complete with aluminum heads, intake and carburetor, weighs less than 450 pounds.
Pricing, however, may be the block's best feature. It lists for $3,495 with billet steel main caps and $3,295 with nodular iron caps. Order it as an upgrade to a World Products Motown crate engine, however, and it'll add just $2,000 to the bottom line-a bargain, if you ask us.
So, who's up for building a small-block ZL-1?More info at www.worldcastings.com