Platinum+ Pro Stock= Performance

Dart's Platinum Series PRO 1 aluminum cylinder heads were developed on the same powerful wet-flow bench that the Dart Engine Department uses to develop Richard Maskin's Pro Stock engines. The wet flow bench reveals the effects of changes in ports and combustion chambers as the fuel/air mixture moves through the intake and exhaust tracts.

In medieval times, alchemists searched in vain for a formula to turn lead into gold. The modern-day sorcerers at Dart Machinery have a better idea: They've turned aluminum into platinum and then into gold when a customer buys a set of these heads.

The “precious metal” in question is Dart's new generation of Platinum Series PRO 1 cylinder heads for Chevy Small Block (mouse) and Big Block (rat)  Chevy V-8s.

Like the Platinum version of the Dart's popular cast-iron “Iron Eagle” cylinder heads, the new Platinum Series PRO 1 heads cam trace their lineage directly to Dart's Pro Stock cylinder-head research and development. Dick Maskin credits Wet-flow technology and improved combustion efficiency for the improved cylinder heads 

The small-block Chevy V-8 has been modified from the original stock design and raced for more than 50 years, Their big-block came to be a little later but has been on race tracks for more than 40 years. The Platinum Pro-1 versions of those original heads are other variations on these familiar themes.

"Essentially we've revisited and reinvented the standard 23-degree small-block head," said Dart founder and president Richard Maskin. "There were enough things to change that it justified making a brand-new head from scratch. Our goal was to take advantage of the parts and technology that are now available and bring these heads into the 21st century.

The big-block PRO 1 head's as-cast exhaust port was modeled after the CNC-ported version. Port cross-sections were reduced slightly in size to maintain high gas flow velocity in a wide range of engine applications.

"In both applications, we intentionally restricted ourselves to the original bolt locations and using stock and aftermarket bolt-on components, because that is what our customers want in this type of cylinder head," Maskin continued.

"Yet even working within these limitations, we made big gains in efficiency by incorporating all of the data we've collected on the wet-flow bench, the dyno and the race track to improve the total package. By the time we were finished, the sum of all the improvements was significant."