Probe Industries Sportsman Race Series (SRS) Forged Pistons for the Ford 351 Windsor and Strokers are manufactured on advanced 2618-t6 forgings. Most feature wire locks (or double spiral locks in some applications), forced pin oiling with oil distribution grooves, and lock removal indentations. They also feature gas accumulator grooves in the second land. All are suitable for power adder applications. 5115 steel, .150 wall wrist pins, locks, and oil rail supports (if required) are included.
Flat top pistons in a Ford 351 to 454 engine will generally provide compression ratios in the 9.0 to 10.5:1 range which makes them a good option for engines with aluminum heads and larger than stock camshafts. Valve reliefs are configured to work with most types of standard and aluminum cylinder heads and will normally fit camshafts to well over .600 valve lift. They are available for and Standard Style Wedge heads, as well as Twisted Wedge and Twisted Wedge 11R.
Dish top pistons in a Ford 351 to 454 engine will generally provide compression ratios in the 9.0 to 13.0:1 range which makes them a good option for engines with aluminum heads and larger than stock camshafts. Valve reliefs are configured to work with most types of standard and aluminum cylinder heads and will normally fit camshafts to well over .600 valve lift. They are available for and Standard Style Wedge heads, as well as Twisted Wedge and Twisted Wedge 11R.
Dome top pistons in a Ford 351W engine will generally provide compression ratios in the 12.5 to 13.0:1 range which makes them a good option for competition engines. Valve reliefs are configured to work with most types of standard and aluminum cylinder heads and will normally fit camshafts to well over .600 valve lift. They are available for and Standard Style Wedge heads, as well as Twisted Wedge and Twisted Wedge 11R.
