1 3/4" Headers Verses 1 7/8" on a Healthy 408....Is There a Big Difference??

You're going to love that GVOD. You'll wish you went with even more gear. 4.10's work great with a 28" tire and a GVOD. I used to run 4.56's, but I can't make it through the traps in 3rd gear anymore with my new engine.

Do you know your trap speed? Or an estimated trap speed?