Rear spring rate recommendations

[chicane67]

Dennis,

The chassis saw double duty on the street (as a daily driver) for 3+ years and was driven hard (understated) on and off the street with the noted spring package. I myself, am more than pleased on the balance of the chassis as it is. So yeah, Id run on the street without hesitation.

The coinciding shock package was 350/160 front and 275/110 rear and the front sta-bar is a 0.750" with no rear.



I should note that my 67 weights in under 3k and the chassis is a little more on the exotic side, so the related freq is going to look a little firm. I don't believe my set-up is going to yield the freq numbers for a typical 67 chassis with a 720/320 package. The last time I ran the numbers was awhile ago and I have made some changes to the chassis (since the last time I even dealt with actually "doing the math") so I am only able to supply you with a rough. I would say its around 2.1F/2.3R to 2.3F/2.5R. I think its on the latter side of that rough, but the choice of bushings and the dampers did change its perception of ride quality tremendously. Its compliant yet it takes high speed compression very, very well.

.......I cant say enough about Del-a-lums and a properly valved set of Bilsteins.