i went and read up on pinion angles for a few hours at several different sites.first of all every site i went to has different opinion's on the subject imagine that. mytmouz is correct when torque is applied the pinion angel rises .pinion angle changes will all set up under a load weather its a traction bar set up,ladder bar or 4 link set up.changes the least amount with a 4 link set up and changes the most with leaf spring set up.from what i gather reading about,it pinion angle is the last step when tuning your chassis .you must first check the angle of the engine and trans and some times shim the trans at the mount to get the trans level with the yoke at the rear end.with the yoke where the u-joint sits into the yoke sideways .then buy a leveling device from sears or where ever.once every thing is level then you angle your pinion downward a certain amount of degree's all depending on your set up. if its a traction bar set up 6 to 7 degree's if its a ladder bar set up 2 to 3 degree's if its a 4 link set up 1 to 2 1/2 degree's .the whole reason for setting the pinion angle down with out a load is for the reason mytmouz says.when the torque is applied it will raise the pinion angle back to zero.also luv masta is right too if your off more than 3 degree's eiter way under load you can have catastrophic failures as far as bearings u-joints axle's housings etc.there is really so much to this and i only know what i have been reading.but from what i gather there is as much science to chassis tuning is there is engine building or anything else.also all the degree settings for how much to degree your pinion has to do with the power and torque that one is putting to the ground.the numbers i specified if for the 300 to 400hp range.less hp needs less degrees more hp needs more degrees .from what i read some all out race car chassis dont need any degreeing.anyway this is only what i have learned today from reading about it so dont hold me too any of it.i never took the time b 4 to learn any of this but i must say i find it interesting and when all said in done hopefully i am able to hook up.this is just bits and pieces of what i took in reading today there really is allot to know about the subject,and like anything else one can read all they want and the information is good but hands on is every thing in my opinion,so im going to play with it to see what i come up with.im also in the middle of a s10 build up right now for my girl friends son,i will have to play with his settings also.sorry for making every one read so much here and hope i didnt create a monster with this post for the guys who really know whats going on with chassis tuning.but i would like to hear from some of those who have experience with it.oh i bought some slicks for my truck today that helped quite a bit.waiting on my other ordered parts.caltracs,shocks,degree wedges etc.
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