. With literally millions of factory production units in circulation, the performance ... to a few simple steps. Piston to cylinder head compatibility is determined by two ... two characteristics of the particular cylinder head being used; valve angle and valve ... of the most popular small block Chevy cylinder head, the 23 . Factory GM heads are ... s. Additionally most 23 aftermarket cylinder heads incorporate what is commonly ... and will work with most aftermarket 23 cylinder heads, including those with oversized ... Twisted Wedge , AFR227 and Brodix 10X cylinder heads will require custom pistons. JE ... top and inverted dome pistons. Only the Pro Action/ Pro Topline, Brodix 11X, GB2000 ... , GM Vortec and the GM Fast Burn heads require special pistons in addition to ...
Valve pockets are designed to work with Pro Action/Pro Topline 23 , Brodix 11X and ... angle milled cylinder heads and a 2.750 pin provides added ... to accommodate new aftermarket cylinder blocks. Ring grooves are machined for 1 ...