Coil over angle

[paint2361]

I'd like to get some more opinions on the best coil over angle. I have a camaro with a tri link rear. Pretty close to an A body. Just want to make sure before I get too crazy with mounting the coil overs. I have them set at 0 degrees front to back (with the car level) and 28 degrees top in. The lower mounts are a little inboard of the lca mounts. I'm planning on having 2 or 3 adjustment holes on the crossmember for different coil over angles. Do u guys think I'll ever need ti mess around with this? Or is 28 degrees okay? More or less angle?

[ArtosDracon]

I usually aim for 15*, though I can't even remember why any more, lol. How did you come up with 28*?

[Twin_Turbo]

it's all about angles and loss of efficiency, simple geometry. I'd like it less than 28. The more angle, the less travel the shock sees for a given amount of suspension travel. this means that the shocks will become less efficient for small suspension movements and you have to run a stiffer shock/spring combo to get the desired wheel rate.

[ArtosDracon]

It also alters the bump stiffness compared to the roll stiffness, I think that was how I originally came up with 15* for my project.

[paint2361]

Thanks for all the great info. I got the 28 degrees from a coil overed chevelle. But I wasn't sure if that was correct. 15 degrees sounds better. Will I benefit from having some asjustment? Say one hole at 15* and another at 20 or 25*?

[MrQuick]

unless you want to mess with cosine factoring.... nope, just set it and forget it.

[parsonsj]

This subject has been covered numerous times. I found this post with a quick search:

https://www.pro-touring.com/forum/showthread.php?57509-whats-better-vertical-or-angled-rear-coilovers

You can probably find some more if you look.

jp

[BillyShope]

There are only 2 reasons for mounting coilovers at an angle. One would be to take advantage of convenient mounting points and the other would be to accommodate the stroke of the shock absorber. Well, there might be a third reason (this is beginning to sound like that Monty Python "Spanish Inquisition" sketch). You might want to take advantage of available spring rates.
http://www.racetec.cc/shope