Info please on roller rockers...
Thread Starter
Drifting
Joined: Jun 2000
Posts: 1,856
Likes: 55
From: Largo Misfit, Florida
St. Jude Contributor
Cruise-In III Veteran
Info please on roller rockers...
Has anyone installed roller rocker arms themselves? If so, was it worth the trouble (more power), how hard is it to do, and what brands do you like the best? I haven't found any info in tech tips, so thought I'd ask. Thanks! JT
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 5,730
Likes: 270
From: VENTURA Ca
I use Comp Magnum stainless rockers all the time. They are 1.75 ratio as compared to the stock 1.70 ratio.
I recently changed to these from stock on a 427 and it made an 18 RWHP difference.
I recently changed to these from stock on a 427 and it made an 18 RWHP difference.
__________________
PLEASE TAKE A MOMENT TO VISIT OUR WEBSITE AT WWW.AACORVETTE.COM
NOW PARTNERING WITH AFFIRM TO OFFER INTEREST FREE FINANCING!
ANDY GREEN- OWNER/ CEO -A&A CORVETTE / A&A SUPERCHARGERS
477 LAMBERT ST
OXNARD CA 93036
WWW.AACorvette.com
A&A CORVETTE SUPERCHARGER SYSTEMS
HOME OF THE WORLDS FIRST
CENTRIFUGALLY SUPERCHARGED C7
SUPERIOR ENGINEERING- SUPERIOR POWER
SUPERIOR PRICING- SUPERIOR CUSTOMER SUPPORT
Andy@AACorvette.com 805- 278 4107
PLEASE TAKE A MOMENT TO VISIT OUR WEBSITE AT WWW.AACORVETTE.COM
NOW PARTNERING WITH AFFIRM TO OFFER INTEREST FREE FINANCING!
ANDY GREEN- OWNER/ CEO -A&A CORVETTE / A&A SUPERCHARGERS
477 LAMBERT ST
OXNARD CA 93036
WWW.AACorvette.com
A&A CORVETTE SUPERCHARGER SYSTEMS
HOME OF THE WORLDS FIRST
CENTRIFUGALLY SUPERCHARGED C7
SUPERIOR ENGINEERING- SUPERIOR POWER
SUPERIOR PRICING- SUPERIOR CUSTOMER SUPPORT
Andy@AACorvette.com 805- 278 4107
Le Mans Master
Joined: Oct 2003
Posts: 6,126
Likes: 19
From: Streamwood illinois
I put yellow terra 1.8 rockers and 918 springs on my stock c5 w/ a vararam and tuned to 13.0AFR I gained absolutely no ET or MPH at the track w/ very similar DA. Got logs if you'd like to see. Same w/ a ls6 intake. Honestly on a relatively stock car I think its a waste of money.
NCM, WSCC &amp;amp; SCC Member
Joined: Oct 2002
Posts: 2,900
Likes: 1
Andy,
Did you have to retune?
Do you think 1.8 or 1.85 would be better?
Stock valve cover?
Drivability?
Trying to avoid the cam swap thing. Front end has to come out, suspension is already setup for racing, corner weighted, etc. Big frekin PITA.
Have your 430 cid with Fast/90 mm, full enchilada. 11 to 1 comp. LQ9 72 cc., .58 cometic, 10 out the hole. Any clearance issues?
Running a .576/.576 234/234 on 1.7 stock rockers
With 1.85, the .576/.576 234/234 would effectively go to
.626/.626 234/234 would effectively go to 238/238
Did you have to retune?
Do you think 1.8 or 1.85 would be better?
Stock valve cover?
Drivability?
Trying to avoid the cam swap thing. Front end has to come out, suspension is already setup for racing, corner weighted, etc. Big frekin PITA.
Have your 430 cid with Fast/90 mm, full enchilada. 11 to 1 comp. LQ9 72 cc., .58 cometic, 10 out the hole. Any clearance issues?
Running a .576/.576 234/234 on 1.7 stock rockers
With 1.85, the .576/.576 234/234 would effectively go to
.626/.626 234/234 would effectively go to 238/238
Last edited by #001 2001 Z06; Mar 4, 2005 at 11:34 PM. Reason: typo
Le Mans Master
Joined: Jul 2002
Posts: 7,370
Likes: 8
From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
Originally Posted by TT_Vert
Honestly on a relatively stock car I think its a waste of money.
Installing rockers can be fairly involved unless your familiar with adjusting valves, the hardest part is rotating the crank 360 degrees with the rack installed, it can be done but it's a b*tch.
Le Mans Master
Joined: Oct 2003
Posts: 6,126
Likes: 19
From: Streamwood illinois
actually on a pedistal type rocker you dont need to go to the base circle on the cam of that valve. I've had these rockers on and off and running again in 20 mins. You can just torque each pedistal down to the 22 ft/lbs and it'll be fine. Id check one to make sure you dont have an odd valvetrain situation but after that just bolt em down to 22 ft/lbs not rotating the motor a bit. I've always done it this way w/ pedistal mount rockers and never a problem.
dave
dave
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Aug 2000
Posts: 3,367
Likes: 0
Originally Posted by TT_Vert
actually on a pedistal type rocker you dont need to go to the base circle on the cam of that valve. I've had these rockers on and off and running again in 20 mins. You can just torque each pedistal down to the 22 ft/lbs and it'll be fine. Id check one to make sure you dont have an odd valvetrain situation but after that just bolt em down to 22 ft/lbs not rotating the motor a bit. I've always done it this way w/ pedistal mount rockers and never a problem.
dave
dave
Same here. The Vinci ones a bit different or should I say involved from what I've read.
Last edited by 90 droptop; Mar 5, 2005 at 02:03 PM.
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
Originally Posted by runamuk
Installing rockers can be fairly involved unless your familiar with adjusting valves, the hardest part is rotating the crank 360 degrees with the rack installed, it can be done but it's a b*tch.
Thread Starter
Drifting
Joined: Jun 2000
Posts: 1,856
Likes: 55
From: Largo Misfit, Florida
St. Jude Contributor
Cruise-In III Veteran
Thanks for the answers! I think the way to do it is wait until I can take it to a tuner, and just have heads, cam, and everything installed.
Safety Car
Joined: Nov 2003
Posts: 4,979
Likes: 5
From: San Diego, CA "leaf" "tee" "e"
Le Mans Master
Joined: Oct 2003
Posts: 6,126
Likes: 19
From: Streamwood illinois
Originally Posted by Jim Terry
Thanks for the answers! I think the way to do it is wait until I can take it to a tuner, and just have heads, cam, and everything installed.
Dave
Race Director
Joined: Sep 2003
Posts: 13,550
Likes: 6
From: Now in God's Country, the Big Sky, Montana!
Cruise-In 7-8-9-10 Veteran
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Originally Posted by Patches
Pretty easy, actually. I modified a 24mm socket to do this. I slip this onto the crank pulley bolt and use a 12" adj. wrench to turn the motor over. I don't even have to pull the plugs.
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
I had a friend with a CNC mill cut the socket for me. The width across flats is 1.00" and the height of the cut is .40". Make sure you check the clearance before you buy the socket to make sure you get one short enough to clear the rack. I'm sure you could approximate this with a belt sander or a similar setup if you don't have access to a mill.