Originally Posted by ledzeppelin135
I will give them mall the correct information about my truck but will it stop most hopping and give a good ride.
Well, if you're just gonna hit the mall, it ain't gonna matter
This is actually a question for Alcan, they will know their own springs best. In general, you can estimate the suspension can be cycled the natural arch plus an inch (maybe two) of negative arch, plus half the length of your shackle, depending on how the springs were designed to operate, how thick the leaves are, etc...so like I said, you really gotta ask Alcan how far that spring pack can cycle (not including shackle), then add half the length of your shackle...that's a decent estimate for what you'll get from that pack.
I sorta doubt it's gonna be 14", particularly if it's a stock-length pack. My Alcans (built for weight, not travel) should be able to get 11" on their own (9" natural arch, 2" negative arch & that's pushing it), plus about 2" more from shackle movement, on a 60.5" main leaf with 8 leaves a hair over 0.25" thick and a double-wrapped half leaf on the front of each pack.
Let them know you need travel, IIRC they'll use thinner leaves vs what they use on packs like mine which were designed to carry excess weight.
It will help if you can give them the weight over the rear axle. Most truck stops can help you, either free or for about eight bucks. Subtract...oh...maybe 350# & the weight of your wheels & tires, that's about how much weight you have on the rear suspension.
You'll have very little wheel hop compared to stock, and they'll ride great at whatever weight you specify they need to ride great at...hopefully that makes sense. Mine are awesome, they're pushing seven years old, and should have another 5 years or more on them before they're considered "worn"...Alcan usually guesses about 150k miles of normal use, unless you're always reversing them or racing on them.