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If the springs are sold as individuals and not in a pack, I am guessing the 220lbs/inch is for the individual spring, i.e., 220 lbs to compress the spring one inch.

I have been impressed with the performance of the 4.3 in Toy's. A buddy of mine runs one in his Toyota Trailblazer, and easily climbs the Sierra's to 7k loaded turning 39's with 5.29's. I think the 4.3 with some mods is a nice balance between performance and weight gain over the 22r. IMO you just don't need the power of a V-8 in the smaller trucks, especially out on the trail, all that extra power usually leads to breakage.


No, springs are sold as a pack of coarse. I am guessing that Marlins are the same rating since they are the same supplier. I was just trying to understand what 220lbs/inch spring rate means to a 4000lb truck.

I have a friend in my club w/ a built 4.3 and another w/ a 350. To build a 4.3 to much power seems to mean that you get abysmal fuel economy. I was also thinking about propane which means a sizable power hit w/ was why I was thinking that a 350 would be better. A 350 on gas is too much but one on propane is alright for power. There is not much for rocks up where I am. Gears don't solve everything. Dual cases are next to useless. Upgrading from a 22r/e, yes, ANYTHING is a sizable improvement in power. But from my 3.0 I would like to see at least 230hp/270lbs to justify the cost of an engine swap. Anyway, that is besides the point.

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