20r vs 22r exhaust circumference

  1. RonAlan
    Thread

    Hybrid Questions

    Hi All. New here. I've two questions about my '83 block and exhaust fitment to the early '78 head. One is, I just bought an exhaust gasket for the...
    Thread by: RonAlan, Jul 12, 2025, 0 replies, in forum: 1976-1983 Build-Up/Project Threads
Showing results 1 to 1 of 1