Change Rocker Arms

Reply Subscribe

Thread Tools

Search this Thread

Sep 23, 2011 | 07:50 AM

MR.G.

Thread Starter

Instructor

Joined: Nov 2008

Posts: 114

Likes: 0

Change Rocker Arms

Hi All,
I have done all the mods I can to my 1998 Vert (335 RWHP). I don't want to go inside and someone told me that I could change the rockers and get another 20-25 HP. What kind and what ratio would do that and what kind of problems would I encounter?
Thanks,
Mike

Sep 23, 2011 | 10:17 AM

kp1

Racer

Joined: Aug 2005

Posts: 465

Likes: 16

There were Crane Gold rockers that came in 1.8:1.

Google it & there's still info out there. You need better valve springs to go along with the rockers.

You have a 1998. If you haven't done it already, there are real gains from installing an LS6 intake. It's an easy DIY & fairly inexpensive.

Sep 23, 2011 | 10:53 AM

08 ATOMIC-Z

Drifting

Joined: Aug 2006

Posts: 1,523

Likes: 34

From: King George Virginia

I have these on my car, Crane Gold rockers in 1.8:1. They are still in business . You will gain 15 - 20 HP. If you are handy with a wrench and can follow instructions these are a great mod. These are fully adjustable rockers and you will have to adjust them. If you want non adjustable rockers look at the Scorpion 1.8:1 you will still get a gain with these. You will gain by changing your intake also to the LS6 model, all 2004 had this intake. If you have a stock cam you will not have to change valve springs, however if you are on the original springs it would be a good idea.

Sep 23, 2011 | 11:15 AM

lucky131969

Tech Contributor

Joined: Jan 2007

Posts: 19,292

Likes: 1,109

From: Dyer, IN

Quote:

Originally Posted by 04VaVette

They are still in business

True....under new ownership. The original Crane owned family business dissolved in early 2009, and was reopened in August of 2009, after being purchased by S&S Cycle.

Sep 23, 2011 | 12:07 PM

vettenuts

Team Owner

Joined: Mar 1999

Posts: 22,025

Likes: 192

From: At the beach in little Rhody

By the time you get all the required parts for a 1.8 swap, you can install a small cam and get a good 30 hp easy (small cam).

Sep 23, 2011 | 12:17 PM

tblu92

Le Mans Master

Joined: Aug 2005

Posts: 5,375

Likes: 327

From: CA.

St. Jude Donor '13-'14-'15

Changing ratios to a 1.8 is a great easy mod !! and as mentioned worth about 15-20 RWHP !! I like the Yella Terras the best--- Make sure that you have an LS6 intake manifold--A 98 did not have one--It's another honest 12-15 RWHP--

Sep 23, 2011 | 12:50 PM

corvettebob1

Melting Slicks

Joined: Dec 2003

Posts: 3,315

Likes: 17

From: Near Jacksonville Fl.

I had the SLP 1.85's and it was a direct swap, you will need to change the springs also I used the stock Z06 yellow springs and they worked flawless W/9lbs of boost.