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#1
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PRW SS Roller Rockers
Has anyone used them and what is your opinion of them?
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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
#2
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Which series of the rockers they make are you asking about?
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#3
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A few chats about them in the past.
http://forums.maxperformanceinc.com/...6129&p=6087466 |
#4
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The stainless steel ones.
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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
#5
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Quote:
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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
#6
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I asked one of our Pontiac suppliers about the PRW stainless rockers about two months ago and they said that they are still getting back a few warranty returns on the recent ones. Too bad because the build was extremely mild but needed the low profile of a stainless rocker and they would have been perfect.
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Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon. |
#7
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Looks like Crower's then.
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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
#8
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I've had the Crower's in my car since the 80's.
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The Following 2 Users Say Thank You to Old Man Taylor For This Useful Post: | ||
#9
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If it's a mild build why not use the OEM stamped steel rockers they are very reliable and last forever.
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Tim Corcoran |
#10
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It's a 630 Hp build.
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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
#11
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Hi, just caught this today, ive had these on my 455 since 2010, never really noticed any issues that I could tell...……..BUT seeing all the bad press these rockers are getting lately, guess I"ll go with the crowers.
Rich |
#12
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You will NOT know if there are issues with the pins grinding up the inside of the rollers unless you remove them for inspection or you have a solid cam set-up and they get noisy shortly after setting the valve lash.
With the HR cam set-ups we installed them on the plungers just take up the travel and they continue to run quiet. If you have a magnetic drain plug you will see considerably metal "toothpaste" on it with each oil change. This is the find ground up metal dust created when the overly hardened and "rough" finished pins start to eat up the inside of the rollers. Every single set we used did this so we went another direction. PRW claims that post 2010 they fixed the issues with them, but we've seen sets sold later than that timeframe still have these issues....FWIW......Cliff
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
#13
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I bought a set just before the issues with them became known. I had them installed and fired the engine with them and took them off. I went with Harland Sharp. I also noticed that the polylocks with the PRW's were problematic. On some of them I had to use a wrench to take up slack before final adjustment. I can normally do this by hand. The nuts from HS were smooth as silk. The build in AZ still has the PRW's on it. They will be changed either for HS or $Enduro's.
I also found that the PRW's sat higher than the HS's. I think it is because the horizontal center line distance between the fulcrum and tip roller on the PRW's is greater.
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Frank M. 75 Firebird 68 Firebird 400 RAIII 66 Chevy II 461 Pontiac in AZ Last edited by tooski; 06-04-2020 at 01:00 PM. |
#14
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Quote:
Thanks for the help guys. Rich |
#15
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I've also had these in my engine for about 10 yrs and never even thought about them as everything is running as it should. Maybe I'll check them when I have time. Maybe I will continue not thinking about them.
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#16
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Picked up a set of Crower 1.7 aluminum rockers for 300$ on sale awhile back, might want to check.
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