Suggestions on roller rockers wanted
Thread Starter
Drifting
Joined: Aug 2005
Posts: 1,289
Likes: 3
From: East Waterboro Maine
Suggestions on roller rockers wanted
Hey guys, I need to order some new roller rockers for my 454 build and would like your thoughts on which roller rockers are a good bet, and which ones I should steer away from.
Initially, I was going to get these crane energizer rollers http://store.summitracing.com/partde...0&autoview=sku
but I've heard that aluminum rockers have been known to have durability issues. Would I be better off going with some steel rockers such as Comp Cams Pro Magnum rollers http://store.summitracing.com/partde...&autoview=sku?
I'd like to hear what you guys think. What's worked for you and what hasn't?
Thanks,
Tim
Initially, I was going to get these crane energizer rollers http://store.summitracing.com/partde...0&autoview=sku
but I've heard that aluminum rockers have been known to have durability issues. Would I be better off going with some steel rockers such as Comp Cams Pro Magnum rollers http://store.summitracing.com/partde...&autoview=sku?
I'd like to hear what you guys think. What's worked for you and what hasn't?
Thanks,
Tim
Race Director
Joined: Feb 1999
Posts: 16,978
Likes: 7
From: In Dreams There Is Truth Ohio
The SS rockers are awful heavy and add a ton of weight to the valvetrain...regarding aluminum, have had no problems. If aluminum rockers will break, so will the SS ones...at the fulcrum and/or at teh tip.
I would not hesitate to install aluminum rockers.
One other thing, install long rocker arm studs if you are going with either aluminum or SS rockers.
I would not hesitate to install aluminum rockers.
One other thing, install long rocker arm studs if you are going with either aluminum or SS rockers.
Race Director
Joined: Feb 1999
Posts: 16,978
Likes: 7
From: In Dreams There Is Truth Ohio
long studs are used on all roller rockers...I don't have the length for the threaded portion, think they are .25" or .50" longer than std. studs. Bubba has been know to grind down the rocker arm adjusters to compensate for the longer stud...not a bright idea.
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
There is no compairing aluminum to chromemoly steel when it comes to
strength and durability. Aluminum rods in race engines are lite but do not
last long and have to be replaced. I have a Chromemoly crankshaft in my
18 wheeler has 1 million 300 thousand miles on the crankshaft still going
strong, I will not be replacing it with an aluminum crankshaft LOL.
strength and durability. Aluminum rods in race engines are lite but do not
last long and have to be replaced. I have a Chromemoly crankshaft in my
18 wheeler has 1 million 300 thousand miles on the crankshaft still going
strong, I will not be replacing it with an aluminum crankshaft LOL.
Last edited by Little Mouse; Jun 4, 2006 at 09:57 PM.
Race Director
Joined: Jan 2000
Posts: 13,018
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
The Crane Energizers will work fine. I literally ran 20+ years on my 427 with a set of them. Tons of street and race miles.....7500 rpm...all cams over .600 lift etc etc. The finally started to show wear....but were still working....a guy bought them at a swap meet from me to keep as spares!!
I have been using the Comp Steel ones on the 540 and I also have a set of 1.8 ratio Stainless ones for the intakes from Comp and they are fine. No issues. the bearing on them is huge. The design doesn't add weight to the valve tip end....
Crower makes real nice rockers too..cost more though.
Stay away from the ProForms etc etc.......cheap junk.
Pay close attention to valvetrain geometry on the AFR's. I've yet to hear of anyone yet who checked it that didn't find issues with the stud placement and had to work to get rocker centered on valve properly. They make a fantastic head....but they can't seem to drill holes straight on the stud bosses. Lots of folks end up cutting and rewelding the guideplates to get intake rockers centered.
They will run with stuff out of place....but it's best to get it right while you're at it.
JIM
I have been using the Comp Steel ones on the 540 and I also have a set of 1.8 ratio Stainless ones for the intakes from Comp and they are fine. No issues. the bearing on them is huge. The design doesn't add weight to the valve tip end....
Crower makes real nice rockers too..cost more though.
Stay away from the ProForms etc etc.......cheap junk.
Pay close attention to valvetrain geometry on the AFR's. I've yet to hear of anyone yet who checked it that didn't find issues with the stud placement and had to work to get rocker centered on valve properly. They make a fantastic head....but they can't seem to drill holes straight on the stud bosses. Lots of folks end up cutting and rewelding the guideplates to get intake rockers centered.
They will run with stuff out of place....but it's best to get it right while you're at it.
JIM
Drifting
Joined: Jul 2002
Posts: 1,943
Likes: 1
From: Rosemount MN
A vote from the other camp...
I used Comp Pro Magnums. Love them, they take the weight out of the ends and leave the meat in the middle. I experience no float issues at all. I highly recommend them.
I used Comp Pro Magnums. Love them, they take the weight out of the ends and leave the meat in the middle. I experience no float issues at all. I highly recommend them.
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Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Crane energizer roller rockers, made out of vacuum die cast aluminum.
Cast aluminum VS Chromemoly steel. If you decide to go aluminum
cranes gold rocker are at least made out of extruded bilet aluminum.
Cast aluminum VS Chromemoly steel. If you decide to go aluminum
cranes gold rocker are at least made out of extruded bilet aluminum.
Last edited by Little Mouse; Jun 5, 2006 at 12:15 AM.
