Interested in hearing what everyone running NA has done with there heads,
please list springs, push rods, milling, porting and what type
if you have flow numbers that would be great too
any other comments on irregular valve train geometry and wear could also be helpful

 

We stock PRC 5.3l basted heads available either opened up to 3.905 bore, or with a stock chamber for the guys wanting the stock 5.3l chamber to keep up compression The cylinder heads sell for $1529 out right & feature name brand components like Manley valves & PRC gold springs on a brand new gm casting!