Don't know if this is the right place... but here's some interesting cylinder head info... 3.920" Test Bore ----Intake------exhaust .100 -– 79 .100 -- 60 .200 – 152 .200 - 114 .300 – 218 .300 - 150 .400 – 271 .400 - 173 .450 – 290 .450 - 180 .500 – 300 .500 - 183 .550 – 307 .550 - 185 .600 – 310 .600 - 188 .650 – 310 .650 - 189
Makes me wonder what Chrysler has planned for the 6.1.....the 5.7 is starting to bite the 6.1's heel as far as power goes..:huh:..
We have a "drop in" PAC Racing valve spring kit in the works. Should help out with the more powerful projects that don't want to remove their heads. Ed