Frame / Springs: Need info on use of Moog CC655 Springs.

[64V-K7]

I'm at the point where I could install a set on my Hawk tomorrow. Currently doing end of year maintenance ie; new inner bushings. On the Avanti Forum, one member mentioned that the Moog Springs are almost 2" shorter than the factory parts.. If so, it would certainly make installing them a lot easier than the factory stuff. However my concern is that the new geometry will require a significant change in wheel alignment.

Can anyone comment on their experience after their install?

thx

[Colgate Studebaker]

I used a set of these in my brothers '63 Avanti and they worked fine. At first they were a little high, but after a bit of time they "settled" and the car has a normal stance. These springs are cargo coils,so they "absorb" more of the load as they are compressed. I intend to use a set on my '64 Hawk when I get to that point. Bill

[jackb]

install them. No one here has complained about any part of the substitution...

[Alan]

Bob, There is really no difference in height of the springs. Here is a pic. of a 655 and a 526127 standing next to each other. The 655 is 13 15/16" and the 127 is 14 1/16".

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The 127 checks out at 237 lbs. inch and the 655 at 301 lbs. inch. for the first inch. The 127 has 7 active coils and the 655 6.
There is a guy on this forum that is a member of our local chapter, goes by the name of One Sick Stude, that brought me 6 springs for a Lark to check out since they were dimensionally all over the place. The springs with the same number on the ends ran from 13 1/2" to almost 15" free standing height. That might be where the guys on the Avanti forum come to that conclusion.
So go for it and tell us how you like them, since no two people will have the same reaction or feel for the change to their cars.

[Xcalibur]

Regarding the guy who brought in the six springs to check, did he specify new, used, or what??? Can make a big difference in specs.

[Alan]

They were all take offs. The only thing that was the same was the part numbers on the springs. So we found 2 that were closest in poundage and put the longest one on the drivers side.

[57pack]

Have installed Moog Cc655 in both of my cars and are quire pleased with results.
Didn't notice any vast length difference when I installed them. Took the new spring out of the box and placed the original spring next to it on a flat concrete driveway.

[karterfred88]

Have installed Moog Cc655 in both of my cars and are quire pleased with results.
Didn't notice any vast length difference when I installed them. Took the new spring out of the box and placed the original spring next to it on a flat concrete driveway.

I'm wondering if time will show a difference, as what we take out is obviously "sagged" with time and use. Hopefully not, the vendor's prices and spring company quotes for "original spec" ones are so much higher it will probably be more cost effective to replace with these 4-5 times than buy one of the other sets!!

[Springstreet]

[jpepper]

The Moog CC655 are a direct replacement for the HD V8 front coil. The difference is the progressive Moog coil does not have the harshness of the HD spring. Both springs share the same wire diameter and free height. The difference is in how they are wound. As rate increases on a spring the free height generally gets shorter. The free height and installed height are closer. A spring with a lower pounds per inch rate needs to be compressed more to support the same weight. I have personally used 4 sets of CC 655 springs in my vehicles. They work great. A spring engineer in Pittsburgh recommended this part number and gave me the specifications back in 92 when I was researching front springs for Ron Hall's Avanti. I used Afco coils in his car because I needed a 700 lb/in rate but put the cargo coils in my 63 superlark in place of the HD factory springs. It was a dramatic difference. They are still in there. The cargo coils do not work well in drag race applications. There is not enough stored energy so you do not get much front lift on launch. For drag racing you want a low spring rate and a tall free height. I used to use a 6cyl with air spring when I was drag racing.

Jim

[Alan]

Jim, Back when drag racing, I used Morroso Trick Springs in my K. They are 17" tall and use the stored energy principal.

[karterfred88]

Ok, so I just spent some time looking over the Moog Spring specs here: http://www.moogproblemsolver.com/moo...rings_Spec.pdf
The CC655 there shows it as a "Square " end, but Alan's picture shows a "TG" ended spring-which does it really have??

[Alan]

Fred, One end, the one on the ground is like the Stude, ground flat. The other end is flattened out but not ground, which is what you see. If you flipped the spring around it would sit just as flat but not perfect.

[jpepper]

When I use CC655 I radius the pigtail end that is not ground with a grinder. It eliminates the sharp corner.

[64V-K7]

Alan, check your PM's