bigchuck34

iTrader: (14)

just wondering if anyone has ever heard of or used PRW rockers? I was thinking about useing them but don't know much about them. Here's a link to them.
http://www.performanceracingwarehous...cker-arms.html

Beaflag VonRathburg

iTrader: (176)

I saw a set on ebay rather cheap the other day.

405HP_Z06

iTrader: (11)

Those are private labeled Crane's. Awesome price for that rocker. Go check and see what the Crane kit goes for.

bigchuck34

iTrader: (14)

I was thinking about using these but wasn't sure if they were any good. i was worried they were junk. think i'm gonna get some they are very reasonably priced. thanks

ls1leadfoot

iTrader: (1)

thats cool....private label stuff usually always means cheaper......
they also kinda look like those scorpion rockers i found on ebay once
i would buy them

wicked z28

iTrader: (9)

How do you guys know that tey are cranes and which ones are they i seen several kind on there site.

Cole Train

iTrader: (30)

i've heard it's kind of a waste to get rockers. Idk for sure but it's just what i've heard.~Cole~

Tainted

iTrader: (9)

am I missing something? I didnt see a price listed

bigchuck34

iTrader: (14)

They go for about $230

Tainted

iTrader: (9)

w000 230??? Thats a ****** smokin hot deal. nasty performance re-does our stock rockers for 250 but when you can get a rocker like for 230 then damn

405HP_Z06

iTrader: (11)

I contacted the manufacturer and they say they are not private label Crane's. Here is what PRW said. They do require a special rocker stud, guide plate, and lock nut are miraculously identical to the Crane parts. They claim that their rockers use stock length pushrods instead of the shorter pushrods like the Crane.

Here is the PRW reply to my question about their resemblance to the Crane:

"Hi Aaron,

Happy New Year! Sometimes “looks” can be deceptive. In truth, we believe our product to be superior to the competition, and hope that you will find the same to be true.

The LS Series rocker arms require special studs and guideplates. These are available directly from PRW or from one of our dealers. We also suggest that you incorporate our one-piece pushrods made from 4130 chrome moly steel, available in stock or custom lengths (depending on your requirements) also available directly from PRW or from one of our dealers.

The complete rocker arm system is available as a kit and includes the PRW rocker arms, 3/8” x 8mm rocker studs, guideplates, as well as standard length or custom length pushrods. The MSRP on the kit is $484.50 - $512.50, depending on the pushrod diameter that you specify. If you have any other questions, or would like the name of a dealer nearest to you, please feel free to contact us again.

Regards,
Bill McGloghlon
PRW Industries, Inc.
193 West Orangethorpe Avenue
Placentia, CA 92870

Email: BillMcG@PRWnetwork.com
Local: (714) 792-1000 xt 205
Fax: (714) 792-1095
www.PRW-USA.com
"

Second reply to question concerning pushrod length:

"You can utilize stock length pushrods if you wish, but the guideplates will require chromoly/aftermarket pushrods. "

Here is a link to their rockers:

Aluminum: http://prwonlinestore.com/index.asp?...TS&Category=55

Stainless: http://prwonlinestore.com/index.asp?...TS&Category=65

LS1-450

iTrader: (33)

I am in the process of installing a set of 1.8:1. They are adjustable, stud mounted roller rockers w/ guide plates. They appear to be of good quality. Only mod required was to grind a little clearance in the head (push rod side) for rocker clearance; this was anticipated (AFR 205 heads). Am not sure if 1.7:1 PRW's would require the same clearance grind. Setting up & measuring for push rod length was very easy. Here is a pick of the rockers & my Comp Cam studs. Will finish the install over the weekend. Will post more pics & will comment should any trouble occur.

Saw a negative post from "icedenali" regarding displeasure w/ the install, during my search for PRW information. Am not sure why he was unhappy. Maybe he expected the rockers to be cradle mounted, as are the stockers. Perhaps that was what caused his confusion or dislike w/ his install.

405HP_Z06

iTrader: (11)

LS1-450,
Do you have a scale you can put one of those on? I would like to know how much they weigh.

Can you post some various pictures of the rockers themselves from different angles? What is the Comp part number for the studs?

LS1-450

iTrader: (33)

They've been soaking in oil most of the day & weigh 5.25 oz. (148 grams) oil & all. The Comp Cam stud part number is CC455416. You will need guide plates as well. Here are the requested pics.

405HP_Z06

iTrader: (11)

Thanks Let us know how they work out.

bigchuck34

iTrader: (14)

i got the same comp/arp studs and also comp guide plates. i installed mine last weekend to check ptv and everything worked out great. i'm running 5.3 heads and 1.7 rockers and they seem to clear good but i havn't put a valve cover on to check clearance there. they really do seem like a good quality rocker and they are priced great, i'm suprised more people arn't using them. i also spoke with the manufacture and they were very helpful and great to deal with. i had 1.8's but needed to change to 1.7's and they did an exchange with no problems or questions asked it worked out great.

LS1-450

iTrader: (33)

Any chance that you've started the engine? I see that the valve covers were not yet replaced, but, wanted to ask.

bigchuck34

iTrader: (14)

the engine is not together yet and probly won't be for a few more weeks i still need some more parts to finish it. it's cold out and i have no heat in the garage so this is a slow project, but it should be all going back together soon. the car is a 98 and i still need to get some center bolt valve covers and coil brakets but when it is back together and running i will post the results. the rockers seem like they should work fine.

LS1-450

iTrader: (33)

Finished checking everything out today, including valve cover clearance. You guys are probably gonna need 1/2" valve cover spacers. I ground all the ***** & high spots from the inside of the valve covers & the rockers barely clear. My largest cam lobe lift is .313", push rods 7.3", lifter pre-load .075"-.080", & the back of the lifter is just clear. Although, they barely clear, am strongly considering valve cover spacers. Most of you will have larger lobes & longer push rods. So, spacers are most likely needed. Don't forget that you may also need to grind a bit from the head walls in order for the back of the rocker to clear the inside of the head wall.

LS1-450

iTrader: (33)

Alright.......found one more issue to look for. Had to increase the chamfer on the under side of the rockers. They were hitting some of the stud hex's. Look closely & you'll see the knick. Also, have included a pic of the larger chamfer added to the rockers. Found this while turning the motor over w/ the starter in order to check clearance from the rocker to the head. Removed a rocker to have a look for any head clearance issues & found the underside rocker to stud hex clearance problem.

Also, took a while for me to get oil out of the new lifters. This kinda surprised me 'cuz I soaked them for 4 or 5 days. Turned the motor over say 20 times, 3 or 4 different times trying to get them to pump. One did, but the others didn't until the car was started for a couple of minutes. Maybe the oil pressure wasn't high enough while using the starter. Anyway, everything is in, wipe pattern is right where it needs to be, lifter pre-loads are good, & none of the rocker arms are rubbing anywhere. The only dissapointment was needing to increase the chamfer on the under side of the rockers. My opinion is that the manufacturer should have done a better job in that area. Anyway, for the money, the extra checking & modifying was worth it. Just be careful & check everything. Lack of clearance can become a big problem, if not found.