Phil99vette

iTrader: (11)

Anyone use these rockers? They look pretty good, has anyone tried them?

SStrokerAce

iTrader: (2)

Just put them on a set of Dart heads.

I like them. You have to clearance the valve covers unless you have spacer plates like yours.

Bret

SAM98WS6

I use them..they are working great!

vettenuts

iTrader: (4)

What happened to your Jesel's that you were setting up?

SideStep

Interested in results also...

Viper

iTrader: (6)

Me too....

Firehawk441

iTrader: (41)

We use them on everything. Not just LS1's.

SlickVert

iTrader: (5)

How does the weight compared to stock?
Is the stock rocker a ture 1.7 ratio?
1.75 ratio will add about .015 more lift to a .600 lift cam over a stock 1.7 rocker

Phil99vette

iTrader: (11)

My motor has Jesel's, its a clients car.
Phil

Viper

iTrader: (6)

For $485, they might be a good alternative over stock and for those who don't want to spend $1500 for Jesels ( with spacers ) no? My valve covers are already cleared from a previous experiment.

http://www.powerandperformancenews.c...ry_Code=pmRCKR

vettenuts

iTrader: (4)

Stainless should provide a problem free street rocker with minimal fear of fatigue, but I don't know what the rotary inertia is on these rockers. Haven't seen the numbers, but the Cranes are supposed to have less rotary inertia than the stock rockers with a better bearing system internally.

Steve Bryant

iTrader: (1)

I have them. Great rocker arms. Quality parts.

Steve

Randy WS6

iTrader: (69)

I have a set to, ready to install on my new aluminum 418cid,and they change the lift of the Crain Cam that im going to install ,with 1.7 r.a. 250/266-635/635-112+5 toComp Pro Mags 1.75 r.a. 250/266-650/650-112+5 right were I want it.

SStrokerAce

iTrader: (2)

Most times the steel rockers like the Pro Mags are better in terms of mass over the valve (or rotary inertia) than a aluminum rocker.

FWIW I design the cams around these rockers, it's actually a better way to go.

Bret

z-ya

iTrader: (1)

I got a lot of flak when I put these in along with 3/8 pushrods and morel lifters.They
all told me the extra weight would kill me,it doesn't seem to be the case.

Viper

iTrader: (6)

"Most times the steel rockers like the Pro Mags are better in terms of mass over the valve (or rotary inertia) than a aluminum rocker."

Most? When is it not? Just trying to learn. I have a 227/231 575/579 custom EDC cam.

SStrokerAce

iTrader: (2)

Well MOST TIMES the steel rockers have less mass over the valve!

Z-ya, you put the mass in the right spots, lifters and PR can have more mass and not hurt you at all.

Bret

gomer

iTrader: (13)

I'm installing a set of these on a customer's car next week. I read above where valve cover spacers are required. Who has installed these and what kind of mods did you have to do to the covers or pushrod holes?

Taspeed

iTrader: (1)

I have been wanting to use these on an ls1 for some time now, but I can say that from past expirience with them on LT1's and sbc's i've built that they are excellent rockers. Problem free for me.

SStrokerAce

iTrader: (2)

What you want to clearance on the covers is the hemispherical protrusions that are below the coil pack mounting holes. That and the baffle inside the drivers side cover.

I also milled the walls that stick down into the heads on the passenger side cover thinner so there was more clearance there.

Bret