BAD2000Z28

I am looking at buying some heads that have comp 977 springs in them. I kow that I will have to use comp r lifters because of these springs but my car is my daily driver and I dont want springs and lifters that are going to wear out faster than regular ones. If I can get these heads I will run a cam like a 232/230 114 or something mild [definitely a 114 lsa because its my daily driver and I dont want a bad idle]. How long will the comp r lifters and 977 springs last with a small cam like mine and will either one be not streetable?

DenzSS

If you want "streetable", long lasting valvetrain parts, don't choose radical ones. It is pretty simple.

A 230/230 cam still isn't mild. Stick with a 224 or so duration, stock lifters, stock rockers, Comp 26918s.

Crowley

SO to answer his question does that mean that he will need to change these parts once or more a year?

I was told by Jay at absolute speed that this wouldn't be the case. The 977 springs should last a long time ..

thanks,
Crowley

SPANKY LS1

iTrader: (24)

I am running the same setup (Comp "R"s and Comp 977s) and I think they'll last a while. A 232/230 114 cam isn't far off from what I'm going to be running. Will they last 100,000 miles, probably not. I think you'll get a lot of miles out of the Comp "R"s, and as far as the Comp 977s, you could probably get 15,000-20,000 miles out of them I would think. Mabe someone who has run 977s for a while will jump in here. Good luck, Shawn

BAD2000Z28

So they wont be streetable? How long will they last the springs dont worry me they can be changed with the heads on the car but the lifters have to be changed when the heads are out right? Dont want to pull the heads off every year to change lifters

DenzSS

What I am saying is you are wanting the best of both worlds, which can't happen.

The lifters should last, but to me is is incredibly silly to run a cam/spring combination that will collapse the stock lifters and then gripe about reliability. Either you build with moderation or you pay the price in maintenance. It is simply a choice.

I run a solid roller, which takes a buttload of maintenance compared to hydraulics. once again, a choice.

Crowley

All this talk just makes me nervous. I think this is the wrong setup for my daily driver. The cam I got has the following lift: .595/.601 .. The heads are being built (AS 5.3L Stage II w/ 977 and compRs)

What other spring setup is good for this that will be reliable and maybe be changed every 2 years?

The COMPR/977 setup just seems to be too much of a PITA and if it is like that I don't want to have to rely on a shop (and I don't know enough about it) to get it set up correctly since this is my only mode of transportation.

Thoughts?

Crowley

dame

iTrader: (3)

do you have adj roller rockers also?

1998redcoupe

Definitely need Adjustable R/A's for preload crap for those lifters. Plus, do not forget that aftermarket springs specially the duals tend to only last about 15,000 miles. The fact that car is you DD, you might be doing maintance on the springs sooner than every two years.

94form2000z

iTrader: (10)

I think you can get away with a new set of stock lifters. Should ask if anyone is running the 977's with stock lifters. I believe you could get away with it as long as you don't put heavier rockers on.

Crowley

.. oh well .. I guess I'll put these heads and the cam up for sale when I get them ....

I guess my current mods are the limit for a daily driven car .... The origional G5 cam with 918 springs ...

thanks for the input all ..

Crowley

02bluess

iTrader: (18)

I'd talk with Jay again before you get too discouraged...

I've got a similar set of heads coming from Absolute, too. In talking with Jay, it sounded like the 977's are a proven spring that should stand up well to higher lift cams. My initial concern was more with the Comp R's, but Jay went ahead and installed my heads and a similar cam on his shop engine and shimmed them up so that I should be able to torque the rockers to 22ft/lbs and go...

Crowley

Jay actually has my cam and is doing this as well. I guess I am just worried since this is my daily driver .... Let me know how your setup goes ..

thanks,
Crowley

Nasty N8

iTrader: (33)

The Comp R lifters are very streetable and are easily setup with non ajustable rockers(you just need to know what you are doing). Do not give up I just think the spring pressure maybe a little high but I don`t know the exact specs of your cam. That is a lot of lift to try and keep things under control. For a daily driver maybe the same cam on less lift and just 918 springs? Ask Jay at Absolute what he thinks on the matter and go from there.

Nate