Powerstroke Products 6.0 20mm Head LOADED HD Valve springs 20 Inch Each bolt is centerless ground

Each bolt is centerless ground to ensure the bearing surface is perpendicular to the threads creating equal load distribution

An increase in low to midrange power where you need it

Premium Quality AC Delco REMAN starter motor assembly

Matched ports and a merged runner design reduces exhaust backpressure

Sealing (M22)

Powerstroke Products 6.0 20mm Head LOADED HD Valve springs 20 Inch Each bolt is centerless groundPowerstroke Products 6. 0 Head, Sold Each. These heads with the heavy duty 100# valve springs are an excellent choice for upgraded Turbo and mild tuning. More control over valve train means more useable power. No Core all new parts. Heads come with new valves, Iron valve guides , valve seats, valve stem seals and of course the Springs. Ready to install with injector cups already pressed in. These heads carry a one year unlimited mileage warranty from