Not much help-I thought my old MoToRs Manual would shed some light but all it did was identify it as "Delco single acting with internal relief valve". I believ the name is based on Delco manufacturing a shock based on a Lovejoy patent.
If you wanna find another one search ebay theres been a fair amount on there. I been looking for a good deal on them all I been searching is lever shocks. Just have to watch theres left ones and right ones.
These are not "knee-action', they are simply hydraulic lever action shocks. "Knee-Action", or Dubonnet, suspension was used on Chevrolets from 1934 thru 1938 or 39. It is a large hydraulic suspension unit on each side mounted to a crossmember. Problems with maintenance and longevity due to lack of, caused it to be replaced by the cheaper suspension where the front shocks are the upper control arms which was used through 1948 on cars. This different suspension, oddly, was still called "knee-action" in Chevy brochures.
These are refered to as KNEE ACTION SHOCKS in all the books and catalogs. I know it might be different than Chev. 34-38 But it is diffently referred to as "KNEE ACTION SHOCKS" And YES the ***le Says 1940 Chevrolet Sedan. Never had the opertunity to drive this chevy. Cant wait to see what type of handling to exspect. I was wondering if put into conjuntion and in the right spot would new shocks be a " + " to this frt end. I know of a few guys on hear said they thought "when everthing was working" that these wern't just to bad of frt ends. I do see where frt disks are readdly available for these years. Soo why not stay with these.
You are correct, pasadenahotrod, but the new kids on the block have basterdized the term and so history has been revised!! As it is with our current So******t guvment. They still call it a Democracy!! p.s. ..........being political? Not. Just making an anology. Hee, hee, hee.
On my '31 chivvy. From the inside with floorboards removed. Front ones are double action, rears are single action.
Hmmm....maybe..... I always heard the shocks that served as the upper control arm on some vehicles get called "Knee-action shocks"...but the front end on the old Chevys was called a "Knee-action suspension"! No big deal either way as they both have a similar movement in use. The shocks shown were just called "Lever shocks"! I THINK those are single acting as opposed to double acting and I've also heard they have a tendency towards spooky handling as the resistance is in one direction only. Only HEARD it, or read it maybe...NO personal experience...but its something to check into just in case.
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