Comp Cams 914-16 should work. You will need some good lifters to run them.

 

I hate to disagree with someone about their own product, but the 977 spring can be used with HR lifters. I can vouch for that based on personal experience. If you look at Comps catalog http://www.compcams.com/Technical/Ca...005/RC2005.pdf you can see the #26112 spring with >450lbs open pressure described as "ideally suited for hydraulic roller application up to .625” lift". The people who answer the phones at Comp are often incorrect.

Rich

 

Thank you, I kinda thought so.

I just need to find out if the 977 will fit in the stock seat or not.

I had a problem opening the link Rich.

 

96vortechSS -

Sorry to go off subject...Do you have anything against the cam you are running? I currently have the same one (218-230-114). Just wondering 'cause I dont see many people running it...Although it seems to work great, with good low end and strong mid.

Are you looking for more valve lift?

Thanks,
-Scott.

 

In short answer, No. The cam we are running has made over 600rwhp with a vortech s-trim, cnc lt1 heads.

My reasoning for changing is nothing more than I want to run more rpm and I want the car to lope harder. Blower cams aren't really suppose to lope hard but I want the sound anyway but I still don't want to leave the realm of a dedicated blower grind. Hope this helps.

 

-Isn't 467lbs open too much ??
-I didn't heard any trouble about beehive.. Why don't he go with them? Also not machining required and he can use them with oem lifters.. (actually an hydra rev kit help a lot)

-If 977 will be your choice you can use Morel lifters.. (its $$$ ,great piece)

 

Buying a cam just for sound? combos make power not sounds, A hotcam with a bad tune can sound like a 847 cam.

Pick the cam for the power and rpm, not sound

 

I know, a good tune on a radical cam makes good power and has a dragster sound. As I said I've made good power with the 218/230 but you can barely hear it. I want more lope. I've heard a 230/230 on a 114 in a 383 turbo car and it sounded pretty good. N/a cars run 230 duration all the time at less than 7000k rpm.

We are getting off subject now but oh well. Everyone is entitled to they're own wants an desires. I know that sound doen't make power or performance and as stated before my current cam has made 600 rwhp which is my goal.


I'm just looking for a spring that will have the right amount of seat and open pressure. When looking at comps website it looks like the choices are either the springs I have with specs of 121# and 328# or the 977's which are 155# and 419#.

Beehives do not have the required seat pressure for a FI car. At least none I've found. Plus I don't want to have to machine the seat some more.

Justin

 

There is a big difference between cc987 & cc977 springs..!

- You say beehives don't have enough pressure for a FI car.. so the 987 have?? 987 springs have less than beehives,so forget the 987s.. In addition, beehives have 130 close pressure ,but they have less mass than other springs,so this makes change everything. (perform better,don't hurt lifters,less trouble...)

- Get some infos about beehives,I think you have wrong knowledge about them..

 

Well I have looked at the 26918 springs. And you are right they do have enough seat pressure but you need to read my full post before you critique my researching. Look at the open pressure # requirements I'm looking for. 987's have more than the beehives in this case. And 987's have a total stronger rating than 918's I still may go with 918's but I didn't want to have to machine the head. I don't understand why I'd have to machine the head for 918's since they're outside diameter is actually smaller than 987's.

 

I know machining is not required for 26918, but if so its not a big deal.. Lots of people use these beehive springs without a problem. I use 160lbs close 400lbs open springs for my current setup, but if I got any problem I will get a set of beehives..

 

Ok, I couldn't figure out why someone told me the head had to be macined to accept the 26918. I would like to run the beehive springs they're lighter. However I'm looking for something with the spring pressure close to what you run. I also know that there is a big differance between 987's and 977's.

What I would like to know is do you have to machine the seat pocket in the head to accept the 977's and have you had any lifter problems with them. Rich say's he's used them with success and I've never seen him give bad advice to anyone. So that being said I think I might look at purchasing some 977's. The beehives will handle the lift I want but they fall 30# short of open pressure that everyone say's is needed for and FI car.

Rich, do you think 320# open pressure is enough to control the valve on a car with 12-14 psi?

 

Blower changes lots of things.. Maybe beehives will not be good choice for +10psi boost.. If you go with 977 springs I strongly suggest you to go with Morel lifters.. comp lifters (850-16) can't handle this pressure and everybody has problems with new style of comp R lifters (875-16).. So the best thing to do is, get this high quality Morel lifters and be cool..

 

I don't have a set of LT1 heads in front of me and I have not installed the #977 on LT1 heads. However, the OD is 1.460", so I do think it will fit. Not absolutely sure, though if machining is needed, it would be minimal. I am not familair with the lobes you are using, but I think 320# open would be enough - boost does not influence the required open pressure. Call the manufacturer and see how much open pressure they recommend to be sure.

Rich

 

Thank you, well if boost doesn't inlfuence the open pressure then I should be ok with the comp 26918's. I'm not even sure what lobes I'm going to be running this time around.

I know as some people have told me that blower cars don't require a lot of cam. That being said my heads aren't that great. I have a mild $400 street port on them b/c I didn't have the money at the time for a full port job. They only flow 236cmf at .550. So it is cheaper at this point for me to install a more radical cam to make up for the less than perfect heads.

Anyway I've gotten a little off topic. I think I finally have the answer on springs I've been looking for. If I don't have to machine for the 26918's I'll go with them since they have 130# seat pressure and handle .655 lift cams. If I need to go with the 977's I'll just have to upgrade the lifters. At that point I might as well install a better set of heads and run less cam.

Thanks,

Justin