Maximize 4.000 in. and larger bore combinations with AFR 245cc LSX Mongoose Strip cylinder heads. These aluminum cylinder heads feature 100 percent CNC-ported chambers, intake, and exhaust ports,...

Maximize 4.000 in. and larger bore combinations with AFR 245cc LSX Mongoose Strip cylinder heads. These aluminum cylinder heads feature 100 percent CNC-ported chambers, intake, and exhaust ports,...

Precision Race Components Aftermarket Casting 6-Bolt 260cc Fully CNC Ported LS3 Heads. Assembled in the USA When selecting your camshaft, please keep in mind that the largest camshaft you can run on...

Recommended for aggressive street/strip builds with displacements up to 427 c.i. operating at or below 7200 rpm. Capable of flowing 328 cfm at 0.650 in. lift with a 4.000 in. bore size. AFR...

Recommended for aggressive street/strip builds with displacements up to 427 c.i. operating at or below 7200 rpm. Capable of flowing 328 cfm at 0.650 in. lift with a 4.000 in. bore size. AFR street...

AFR 215cc LSX Mongoose Strip cylinder heads are strong, versatile, and a great match for aggressive applications and large stroker engines where your aim is enhancing street/strip performance. These...

Precision Race Components all new cylinder head castings completed with 227cc runners. For stock cubic inch LS1/LS2 applications requiring smaller chambers for extra compression MADE IN THE...

Precision Race Components all new cylinder head castings completed with 247cc runners. For 408 cubic inch and larger applications with 4.03"+ bore sizing.   MADE IN THE USA!! CAST IN THE...

Precision Race Components all new cylinder head castings completed with 237cc runners. For 370 cubic inch and larger applications with 4.00"+ bore sizing. Click Here to SEE why we build better...

Maximize 4.000 in. and larger bore combinations with AFR 245cc LSX Mongoose Strip cylinder heads. These aluminum cylinder heads feature 100 percent CNC-ported chambers, intake, and exhaust ports,...

Maximize 4.000 in. and larger bore combinations with AFR 245cc LSX Mongoose Strip cylinder heads. These aluminum cylinder heads feature 100 percent CNC-ported chambers, intake, and exhaust ports,...

AFR 215cc LSX Mongoose Strip cylinder heads are strong, versatile, and a great match for aggressive applications and large stroker engines where your aim is enhancing street/strip performance. These...