Filling an engine block is a great way to add strength.

Rokblock is specifically designed to fill engine blocks.

Valve springs are one of the most complex racing engine components.

Proper choice and setup are critical to not have a spring with proper pressures in an open and closed state.

Valve lash is a critical valvetrain setting.

We cover why valve lash is important and how you set it.

Having a strong engine block is critical if you want to make big horsepower reliably.

Dart's iron LSNEXT block is a perfect fit for Project Number Cruncher.

A 762-cube, 1,400-horsepower pump-gas behemoth from Sonny Leonard could be yours for the price of a raffle ticket.

PRI's 2019 engine raffle aims to raise money for the Victory Junction children's charity.

World Products has probably the strongest Ford block on the market, some holding 3,500-plus horsepower. These blocks come with no clearancing needed, ARP fasteners standard, and a main and cam bore within spec.

When you're making serious power with copious amounts of boost of nitrous oxide, the little details in block design matter.

Dart has taken a lot of those custom touches and added them to a production block.