yes so its the wheels that give the real lift (the getting stuck lift)/quote] - yes lifts just let you fit bigger tyres though they do impriove all the angles (approach,departure,breakover) and help to keep vulnerable things out of the way.
extreme-4x4 said:
when you max the wheels out to 35's if its possible and your trimming the sills/tubs/arch area at 3 and 9 oclock with a sring lift and no body lift your talking about 10mm extra off (max) if any, than you would without the body lift
By making the room with a body lift I hope to avoid needing to touch the tubs as they will be lifted up and away from the tyres (without compromising suspension travel - see below)
extreme-4x4 said:
but i can only see a body lift lifting the body for looks but it will trow the centre of gravity out more and make it loads more un stable on road.... then you just have a quarry basher if you cant drive them nice on the road
Its quite the reverse of that. A bodylift leaves all the heavy things, chassis, engine, gearbox, frot diff etc at the same height and only lifts the relatively lightweight body so it actually keeps the C of G lower and makes for a more stable truck (height for height) on the road (and off).
There is another complication especialy for these trucks with IFS.
It doesn't matter what you do to the front end there is a limit to the amount of suspension travel. I'm not sure off the top of my head what it is but lets assume its 8", 4" up (bump) and 4" down (droop) on a standard set upat correct ride height. If you lift the truck 2" you change this to 6" bump travel and 2" droop travel. So if you were to lift it 4" you would have no droop travel which would not be good on the road or off. By doing the same lift as a body lift or splitting between the 2 you can retain droop travel.
There is a converse problem when you fit larger tyres, because of the larger tyres you may need to limit bump travel (larger bump stops) to prevent the tyres touching the body or suspension members. Say perhaps you have to fit 2" larger (in suspension travel terms, because of the ratio in the wishbones it may only need 10mm bigger stops to limit the suspension by 2") bump stops. This applies to all spring lifts on IFS or beam/live axles. WIth a body lift you create real space above the tyre to be taken up by larger tyres.
I think the reason that spring lifts are more popular is there relative simplicity, especially on a truck without IFS. Even changing shocks and brake lines to longer ones too, seems a relatively easy job compared to undoing the body mounts and lifting the body. And in fairness it probably is, but it is usually cheaper to do a body lift and the result is better, but most people aren't prepared to tackle such a project when for a little more money they can do a spring lift. Of course if you are paying someone else to do it a spring lift is far cheaper. 2 hours labour versus probably 8hrs - the cost of the parts starts to pale into insignificance.