2.5 SAW coilovers - stock spring rates?

I have these "old style" SAW 2.5 series coilovers.

Does anyone have information on these? I need to get new springs and can't figure out what rates I have. I am leaning towards getting 650 lb coils - my truck is a 2.7 with a heavy winch, bumper, and sliders.

Also, does anyone have info on what viscosity oil they should have? IFP depths?

Here is a picture:

 

looks like a 2.0

 

Yeah I don't think 2.5's would really fit on a stock lower control arm

 

They do, most performance coilovers are 2.5" with 3" coils.

 

They have '2.5 Series' laser etched into the side

 

For what it's worth, I have 2.0 SAWs on my 2.7L with 650lb springs and it's a little stiff. If you have some extra weight up front I think 650s will be fine.

 

Thanks for the data point. I have a heavy bumper+winch so 650 should work.

 

Your cab type should also be considered for the variance in weight between front and rear.
If your cab is extended that is further reason to go to the heavier 650 lb. springs.

 

I used to have those coilovers so I have a new rebuild kit and the oil if you want it. $20 + shipping

 

As it turns out, one of the coilovers says '2.5 Series', and the other says '2.0 Series'. Definitely the 2.0. My bad

 

Thanks, but I'll pass. I already have a rebuild kit but fortunately they do not leak and have good pressure.

 

Agreed - the 2.5 SAW's have the adjustment at the top
The 2.5's do fit the stock lower control arms. Put a pair on my 98 and another pair on my daughters 02 - her's is leaking though - probably 7-8 years on both sets...

 

my eyes must be deceiving me