The best, most cost effective choice for the performance minded Chrysler enthusiast just got better, It now features a new, more efficient heart shaped chamber. Convert your stock iron head to the 440-SR and your intake, rocker shafts, rocker arms, valve covers, pistons (either dome or flat top) will work.
The 440-SR is the most versatile head Indy has to offer. It is a true bolt on 60 to 75 HP increase in stock form. Even a fully ported stock iron head is not as good as a stock 440-SR. The use of the 440-SR ranges from a daily driver to a 670 HP 500″ cid on pump gas (with heads in fully ported form with the 440-1 Max Wedge intake port opening). The 440-SR also makes a perfect replacement power upgrade for bracket cars.
LONG VALVE DESIGN – FEEL THE POWER