8secbusa

I just picked up a set of Comp 1.85 rockers. I still have the stock cam, will I need new springs or can I get by until I do a cam swap a bit later???

Also, these rockers come with guideplates, do I need hardened pushrods?

Thanks

wildta

iTrader: (1)

Yes you need some comp 918 springs, hardened pushrods no, but why not!

snake charmer

iTrader: (118)

Stock 98-00 trans am cam

Duration@.050 198.86 intake 209.25 exhaust
Lift .498 intake .497 exhausts
LSA 119.45

Stock 01-02 trans am cam

Duration@.050 196.37 intake 208.72 exhaust
Lift .464 intake .479 exhausts
LSA 115.92


These are the stock cams in our cars . What year is yours ?
You have as you may already know a stock 1.7 rocker . You devide the rocker and lift then multiply that by the new rocker size and that is what lift you will be running .

For instance , you have a 98-00 cam with a lift of .498 so 1.7 /.498 = .293 (rounded up ). So then multiply .293 by 1.85 = .542 lift .
So you could get by using some yellow ls6 springs that have a lift of .550 . If you are thinking of running a larger cam in the future then just go ahead and buy some 918s good for .600 or go all out and buy some double springs that are .650 .

ss.slp.ls1

iTrader: (36)

Get new springs and sleep better at night.

fastvet

iTrader: (2)

No, not on a stock cam. I had mine put on my vette.they were SLP 1.85 and SLP said it would be fine. But if it makes you sleep better, why not!

8secbusa

Ok. The 918's are beehive, are the stockers beehive or do I need retianers?

Thanks All.

Old SStroker

What does Comp recommend? They may give you different advice from some that has been posted. Going to the horse's mouth is better than getting info from...well you know the rest.

vettenuts

iTrader: (4)

You need better springs, definitely.

You need hardened pushrods compatible with guide plates.

Sounds like you didn't get a complete kit if you are asking about pushrods, what do you have in the kit?

Does Comp have a pushrod length recommendation? If not, they are a little more complicated to measure than a fix rocker since they are fully adjustable.

8secbusa

The comp kit I got has the following:
Rockers, guide plates, rocker studs.

vettenuts

iTrader: (4)

How about the polylock nuts? If no pushrods, then these are more difficult to set up. Do you have an adjustable pushrod? Is there a recommended pushrod length from Comp?

5_02ls1

iTrader: (20)

I would atleast do a set of newer ls6 springs...















that I have for sale haha