Re: Rocker question
[Re: DaytonaTurbo]
#641350
03/16/10 09:54 PM
03/16/10 09:54 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Enought people have had trouble with the cheapie china roller rockers that I would stay away. Heck, enough people have trouble with the name brand ones that I'd stay away from roller rockers all together unless they're absoloutly needed for your application. If it's for a small block, I would probably look around for a used set of factory adjustable rockers off a 273 or a ductile iron set of new ones.
Rollers will not increase your power output ad will be of no adnvantage till you start using high lift with high spring pressures the rollers will help with side loading somewhat.
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Re: Rocker question
[Re: MoparforLife]
#641351
03/17/10 01:11 AM
03/17/10 01:11 AM
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Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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prw is probably pro comp with a different engraving on the rockers.
or maybe they are marketing prw as the upscale version of pro comp..lol
both are located out of southern cal 30 miles apart.
picture of pro comp 1.5 rockers ran two years on 340 bracket motor...had hughes 256/263 solid cam with about .590 lift. These have the needle bearing on the shaft...
Last edited by 70AARcuda; 03/17/10 01:17 AM.
Tony
70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: Rocker question
[Re: 70AARcuda]
#641352
03/17/10 01:26 AM
03/17/10 01:26 AM
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Joined: Jul 2006
Posts: 4,319
Puyallup, WA
StealthWedge67
master
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master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
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personally, I'd stay away from anything with needle bearings for a street motor. I also personally feel more comfortable with steel or iron for a street motor. Needle bearing aluminum rockers just leave the door open for too many things to go wrong in my book. And they offer virtually nothing in the advantage column.
Now if this was a race motor that was going to be torn down and inspected regularly, then perhaps the risk is worth the small gain (??)
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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Re: Rocker question
[Re: 70AARcuda]
#641353
03/17/10 11:55 AM
03/17/10 11:55 AM
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Joined: Oct 2008
Posts: 75
greeneville, tn
the nitro man
member
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member
Joined: Oct 2008
Posts: 75
greeneville, tn
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Quote:
prw is probably pro comp with a different engraving on the rockers.
or maybe they are marketing prw as the upscale version of pro comp..lol
both are located out of southern cal 30 miles apart.
picture of pro comp 1.5 rockers ran two years on 340 bracket motor...had hughes 256/263 solid cam with about .590 lift. These have the needle bearing on the shaft...
the engine builder that told me about the prw rockers said they are designed in the usa, but made in china. he did say they are the best of the china rockers. i'm going to get the prw stainless rockers for my 451.
how are your pro comp rockers holding up? i've read a lot of bad about them, but that is to be expected just from where their made.
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Re: Rocker question
[Re: the nitro man]
#641354
03/17/10 12:58 PM
03/17/10 12:58 PM
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Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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Quote:
Quote:
prw is probably pro comp with a different engraving on the rockers.
or maybe they are marketing prw as the upscale version of pro comp..lol
both are located out of southern cal 30 miles apart.
picture of pro comp 1.5 rockers ran two years on 340 bracket motor...had hughes 256/263 solid cam with about .590 lift. These have the needle bearing on the shaft...
the engine builder that told me about the prw rockers said they are designed in the usa, but made in china. he did say they are the best of the china rockers. i'm going to get the prw stainless rockers for my 451.
how are your pro comp rockers holding up? i've read a lot of bad about them, but that is to be expected just from where their made.
those pro comp i had held up fine, well..prw is the best of the ones made in china...then they are still made in china like the pro comp...probably same plant different shift..maybe prw shift is unionized labor...LOL
they are probably all designed in the USA by copying crane..comp..harland sharp rockers.
Last edited by 70AARcuda; 03/17/10 01:15 PM.
Tony
70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: Rocker question
[Re: DaytonaTurbo]
#641355
03/17/10 09:41 PM
03/17/10 09:41 PM
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Joined: Feb 2010
Posts: 76
Elizabethtown KY
Six Popper
OP
member
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OP
member
Joined: Feb 2010
Posts: 76
Elizabethtown KY
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Quote:
Enought people have had trouble with the cheapie china roller rockers that I would stay away. Heck, enough people have trouble with the name brand ones that I'd stay away from roller rockers all together unless they're absoloutly needed for your application. If it's for a small block, I would probably look around for a used set of factory adjustable rockers off a 273 or a ductile iron set of new ones.
I was only looking to upgrade the rockers because I am going to a bigger cam over 498 lift. I have a set of 273 adjustable rockers, but I was afraid they wouldn't hold up. Does anyone know there limit?
I am aware that roller rockers won't add horse power per say, they do cut down friction and as mentioned side load. So if anyone has used 273 rockers on a big cam combo lets hear it I would like to know what their limit is.
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Re: Rocker question
[Re: Six Popper]
#641358
03/18/10 05:07 PM
03/18/10 05:07 PM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
I will try tne factory adjustables I was thinking of running one of these cams.
http://www.hughesengines.com/Index/produ...mp;partid=21848
You are wasting your money if you're buying adjustables to run that cam. Plenty of guys on here are running stock HD rockers on hydraulic cams with around .55x lift. I would run the HD stockers on anything with .560 lift or less. But some guys just think you need to spend money. If you're dead set on getting adjustable rockers, at least get yourself a solid cam so you're actually getting some use out of them instead of wasting them on a mild hydraulic. 
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