hyprZ28

Hey CTSV fam,

My friend handed me a set of what I thought were 1.85 SLP rockers but came to find out they are just 1.8 rockers (harland)

They were new and FREE so I am not complaining at all but wondering if I should just sell these to get the 1.85 SLP rockers.

I don't "plan" on doing any cam upgrades so this will be a great way for me to get some budget HP to the wheels.

I do plan on installing lunati dual valve springs, new rods, etc.

Let me know your thoughts!

punishmentcycle

iTrader: (6)

You won't see hardly any difference between them so I'd just use them. But if you do decide to sell them lmk a price. But as you said they were free so don't try to kill me

itsslow98

iTrader: (18)

I'm a fan of keeping the stock rockers until you absolutely have to change them. I would not risk reliability issues for the sake of a few hp you will NEVER feel.

DMM

As stated...a lot of work for no benefit.

hyprZ28

I've actually done this similar mod to my 94 LT1 & had a significant gain that you could actually feel.

Plans to install the 1.8 rockers along with new springs, and rods are set to take place in the 1st week of June.

I will let you all know how it goes!

I am excited.

HioSSilver

iTrader: (8)

I went from hr 1.7 rockers to hr 1.8 rockers and picked up 4hp/tq at peak. But I picked up 10~ of both under the curve. Roller rockers also free it up at higher rpm and the engine will run smoother at 6500+rpm from my experience.

here's the graph

bmylez

iTrader: (3)

I thought running dual valve springs on stock cam wasn't ideal?

HioSSilver

iTrader: (8)

I wouldn't. There are plenty of beehive options for springs these days.

Naf

iTrader: (1)

I have done 1.7, 1.8 and 1.85. The 1.8 and 1.85 were great on stock cams, but when you changed the cam u are very limited. I would put the 1.8 in with ls9 cam. You will love the smoothness and added power. I did ls7 cam w/ 1.85 rockers on a 6.6ltr and made 520/520 at the flywheel.wanted the gt11 cam but that was 1000$ upgrade

hyprZ28

After doing some further research I definitely shouldn't install the dual valve springs with the stock cam so I am just going to find a good set of beehive springs.

Thank goodness you guys gave me the heads up on that!