Bersaglieri

Well I bought a set of GTP ported LT4 heads and they came assembled with valvesprings used with a CC306. I was wondering if anyone could identify which they are from a few pictures I shot. According to the seller he just knows they are Dual Coil Comp Cam springs.

They look like dual coil, but I'm no expert. They actually give me the thought of 3 coil. They have the regular size tube spring on the outside, then a thinner narrow/flattened spring in the middle with a smaller regular tube spring on the inside.





I found a pic at Jegs for a Comp 924 Dual Spring with Damper. Its closely resembles the ones on my heads. Although it doesnt seem to be any thing special.

Thanks

-Dustin-

turbo_Z

Looks like my springs which are comp springs... would be impossible to tell EXACTLY which of the hundreds of springs they manufacture, those particular could be. If I had to make a guess based on popularity Id say they are 987s.

Bersaglieri

Well they are probably getting replaced by some 918's, but I kinda wanted to know what they are. I'm thinking 987's or 977's. I was hoping for the better of the two, so I could run them with a LE2 size cam, but we'll see.

-Dustin-

BlkLT1Z28

Yeah, I'd say 987's also. They seem to be a popular choice.

Bersaglieri

Well they arent 987's. Here is a forsale thread with pics of 987's for sale. http://web.camaross.com/forums/showthread.php?t=436133

They do not have the middle flat spring you can see in my pics. I wonder what these things are. It would be nice not having to spend $200 on new springs and stuff if these are enough for my cam. Although the pics in the FS thread seem to have the same retainers as mine, Ti I think.

-Dustin-

BMAN'S SCZ

My 977's have three springs. The middle spring is flat and is a dampner and not really a spring. My old 987's were only two.....John

Bersaglieri

Thats why my buddy said about the 977. I really wish I knew, but it seems no one can tell me for sure from pics. At least I know its enough for a CC306.

-Dustin-