We were only able to get data points for a velocity up to about 1.5 inches/sec (while still maintaining some level of accuracy), which is barely getting over the knee in your standard shock force/velocity graph.

I asked KYB for their published information for these shocks and they just got back to me.

They gave me this info for compression:
GR2 - 99 lbs @ 11.8 inch/sec
Gas-A-Just - 121 @ 11.8 inch/sec

Not even close to my numbers. Hmmmm?

 

I was under the impression shocks needed to be measured at different speeds to graph the performance. Not all shocks are linear.

 

You are correct, shocks are not linear. I think my measurements were still in the knee portion of the range and hadn't leveled off yet (which would make my graph interpretation way off). Once past the knee, they are more or less linear (depending on the shock of course).

The numbers I was given from KYB don't seem right at all from the few tests I ran.

 

I do agree that the KYB gas adjust are pretty damn stiff. I have them on my car. I will probably be switching at some point. I'm not sure what I'll go with, probably Koni.

My friend has the KYB GR2 on his 68 and really likes them.

 

haha I was just looking at the GR2s on amazon. They are right in my budget there and you people have now sold me on these haha.

 

KYB- A very good shock for street/strip applications. If you are running a softer tires on the street (such as BFG that are a mix of steel & nylon belted or tires with profiles not shorter than 50 series), these provide the extra stiffness that you need for both comfort & stability. The Exel-G’s (formerly GR-2) are the equivalent to the Edelbrock IAS automatic adjusting units. Overall, stiffness between the Gas-a-just and the GR2’s are the same, the difference is the GR-2's valving which stiffens things up from a oem setting to that of the Gas-a-just units