SS PRO 4.900 HEADS

These heads have a 4.900 bore spacing for DRCE II blocks and have a 12 degree valve angle. They come with SSRE proprietary port work and valve job and are assembled with titanium valves, SSRE Comp springs, 10 degree titanium retainers and locks. With Pro Stock designed ports these are the next best thing to Pro Stock technology! COMPLETELY ASSEMBLED with CNC Work, Porting and Hand Finished with Custom Manley 5/16 Titanium Valves, Pacalloy Springs, Titanium Retainers, Locks, Caps & Seals The cylinder head of choice by the country's leading truck pullers. These heads have been on the NTPA national champion engine the last 12 years.