Looks like PRW?

[dodj]

http://www.ebay.com/itm/Mopar-Chrysler-BB-383-440-1-50-Stainless-Steel-Roller-Rocker-Arm-Set-w-Shafts-/201259586061?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3A440&hash=item2edc01920d&vxp=mtr

Looking for rocker arms and found these. Comments anybody? They look like PRW's and they are the same price PRW's were 12-18 months ago.

[cudabob496]

stainless pretty heavy??

[Chryco Psycho]

Hard to say , the rocker do look like PRW , I thought they had a bit of offset though , the hold downs are anodized alum instead of steel .
 No stainless are not heavy , nodular are heavier & alum are heavy as they are 2x as thick

[dodj]

stainless pretty heavy??

Well from what I've read you want to stay away from aluminium rockers on a street engine, unless you are dropping $1000 plus for T&D Jesel, Sharps, etc.
I'm just trying to decide if I need something better than the stock rockers so I'm looking to see how much more it would cost. You sure can spend a lot of $ on rockers 

[Chryco Psycho]

I agree , I try to use stainless or nodular iron on street engines , what is the cost on PRW now ?
 Ok 2x the $ at around $420 for a set but the PRW come with all the shims & usually a pushrod checker for measuring length

[cudabob496]

well, for my high lift solid roller cam, my Crane Gold alum rockers have been
going great for 15 years.  Rarely have to reset the lash.  But, maybe I've been lucky!

[cudabob496]

this article likes shaft mounted extruded alum rockers.

http://www.enginebuildermag.com/2011/01/selecting-the-right-high-performance-rocker-arms/

[dodj]

this article likes shaft mounted extruded alum rockers.

http://www.enginebuildermag.com/2011/01/selecting-the-right-high-performance-rocker-arms/

The ones they like seem to be the $1000 plus T&D, Sharps, Jesel though. Not prepared to spend that on my rockers. thanks for posting the link, interesting site. 

[Chryco Psycho]

Interesting that everyone prefers the shaft rockers which I have always believed is far more stable / superior design .
Also the steel rockers can be 4x as durable as alum & anodizing the rocker can reduce strength by as much as 50%

[Strawdawg]

Interesting that everyone prefers the shaft rockers which I have always believed is far more stable / superior design .
Also the steel rockers can be 4x as durable as alum & anodizing the rocker can reduce strength by as much as 50%

yep, I had not heard the anodizing comment before.  No surprise that steel is preferred for the street as we have known that aluminum work hardens for many a year.

[dodj]

anodizing the rocker can reduce strength by as much as 50%

Was unaware of anodizing causing a reduction in strength.
My stock rockers have performed since 1976 without a hiccup. Are the more complex (more pieces) aftermarket rockers a necessity for the .513 lift lunati cam I'm putting in? And if I buy new rockers, do I need new push rods too? Sorry for all the newbie questions, just never touched engine internals before.

[Strawdawg]

Given the age of your current rockers, I would say it would be wise to replace them as they have seen more than a few cycles.  I would also replace the push rods for the same reason.  Be a shame to punch a hole thru the end of a rocker due to fatigue or lose the end of a push rod.

Given that you don't have a big lift cam with a lot of spring pressure, you can go to a lower end steel rocker for not much more money than a set of stock replacements.  No need for any high dollar units unless you want to impress your friends   

[Strawdawg]

Scott, I googled for the heck of it   http://www.coloradospeed.com/buyer-beware-speedmaster-ezp-88.html

[crash340]

If I put a hydraulic roller cam in my 76 LA block, should I also consider the likes of PWR roller rockers over std if the $ are not a problem? What are the gains if I do?

[dave73chally]