Proform 68240 High-Flow Aluminum Water Pump Big Block Chevy Long Polished Finish. Polished Finish PROFORM's new high flow mechanical water pumps feature heavy duty ball bearings for up to 40 more coolant flow giving you real performance value for your dollar. Around here, we don't just sell parts - we rely on them when driving our own cars around racetracks, dirt trails, and interstates across the country. Parts may be our business - but grease, fuel, exhaust, power, and speed are what we live for. Today, more than 350 people are employed by JEGS and the business draws in hundreds of thousands of customers each year.Yet, we maintain the culture stared by Jeg Coughlin from the very beginning: a family-run performance shop that preserves a trusted relationship with each and every customer.