Quote Originally Posted by rspears View Post
Charlie,
.....then replace your rear gears to put you in the sweet spot on rpm's at your cruising speed while towing. Once you've done that, a Gear Vendors unit will double your gear selection options, splitting each gear to let you pick & choose to stay in your power band easier.
LOL Charlie, I expect that you're reading everything, but everyone agrees that those 3.21 rear gears are going to need to go away. For me, I'm suggesting that you coordinate the whole package at once - pick your cam, intake and headers based on towing service, not drag strip performance; and once that's done pick rear gears that put you in the rpm sweet spot for highway speed towing. Once you've done that if you want some more flexibility consider adding a Gear Vendor unit. Done right they are a sweet addition, and JB's a great example of doing it right.

I hope you get your truck sorted. It's a super cool package pulling that trailer down the road! I applaud you!