The argument over which cylinder head is best on an LS engine is always fun to listen to, but there is nothing better than testing. Most people don’t have an engine and multiple cylinder heads available to test back to back, but Richard does so he’s done that test. And he’s done back to back cylinder head testing not only on a 6.0L but also on a stroker 408 combo. So is one head better than the other for one engine over the other?

Perhaps they are, but perhaps they are not.

Watch and find out.

Video Description:

HOW MUCH POWER ARE PORTED HEADS WORTH? HOW MUCH POWER ARE REC-PORT LS3 HEADS WORTH ON A 6.0L? DOES A 408 STROKER NEED BIGGER HEADS? CAN I RUN 317 HEADS ON MY STROKER? WILL LS3 (REC-PORT) HEADS WORK ON A 408 STROKER? HOW MUCH POWER CAN AFR 245 HEADS MAKE? WILL 225 TFS GEN X HEADS WORK WELL ON A 6.0L? CHECK OUT THE ANSWERS TO ALL THESE QUESTION IN THIS VIDEO. I COMPARED A SET OF 799 HEADS TO REC-PORT LY6 (LS3) HEADS TO A SET OF TFS 225 HEADS ON A CAMMED 6.0L. I ALSO COMPARED A SET OF  317 HEADS TO REC-PORT LS3 HEADS AND AFR 245 HEADS ON A LARGER 408.