MarcGage00
New Member
As some of you know, I recently purchased a set of Trick Flow heads. I ordered the "flat tappet" version over the "roller" version, as that's what my 383 has. I now want to use them on a 522 with a roller setup. That brings me to me question - what is the difference between a "roller" and "flat tappet" spec'd head? Is it just the spring and valve stem locks? I tried calling Trick Flow themselves and went straight to voicemail.
