PRW rocker arms
Thread Starter
Burning Brakes
Joined: Mar 2002
Posts: 1,035
Likes: 0
From: Atlanta Ga
PRW rocker arms
OK, the local machine shop has recommended PRW roller rockers for my stock L98. I told then this is just a light rebuilt with 1.6 rockers and now LT4 springs.
I've not heard of these, anyone know this brand? Good? Bad? Unknown?
He did mention that there have been some problems with Harland Sharpe, he said scorpions are another that they like. He specifically mentioned that the roller tip portion has some type of locking clip that some model don't have and many failures are in that area?
This guys do build engines for 1/2 mile dirt racers in the Georgia area so they have some decent experience.
I've not heard of these, anyone know this brand? Good? Bad? Unknown?
He did mention that there have been some problems with Harland Sharpe, he said scorpions are another that they like. He specifically mentioned that the roller tip portion has some type of locking clip that some model don't have and many failures are in that area?
This guys do build engines for 1/2 mile dirt racers in the Georgia area so they have some decent experience.
Thread Starter
Burning Brakes
Joined: Mar 2002
Posts: 1,035
Likes: 0
From: Atlanta Ga
Absolutely,
http://www.performanceracingwarehous...cker-arms.html
Can't see anything in particular to say either way.
http://www.performanceracingwarehous...cker-arms.html
Can't see anything in particular to say either way.
Race Director
Joined: Nov 2003
Posts: 12,221
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
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PRW appears to be the Performance Racing Warehouse "house" brand. Just like Summit, retailers often have parts made for them using their logo.
They look quite a bit like Scorpions to me. You could ask them who they are made by. That would lead to a more solid recommendation.
They look quite a bit like Scorpions to me. You could ask them who they are made by. That would lead to a more solid recommendation.
Thread Starter
Burning Brakes
Joined: Mar 2002
Posts: 1,035
Likes: 0
From: Atlanta Ga
PRW appears to be the Performance Racing Warehouse "house" brand. Just like Summit, retailers often have parts made for them using their logo.
They look quite a bit like Scorpions to me. You could ask them who they are made by. That would lead to a more solid recommendation.
They look quite a bit like Scorpions to me. You could ask them who they are made by. That would lead to a more solid recommendation.
Yeah they are a "house" brand didn't know that when he said it, but I think they look decent. I'm going to check with him if he has used these on the circle track cars he's done, that too me would be a good endorsement. I may ask him his price on Scorpions as a fall back plan.
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Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
The PRW house brand rockers are made by Cal Auto Transpeed (CAT).
OK for low spring pressure and mild cams (and I have used a few sets as such with no problems) but I wouldn't use them on anything serious. Look at how small the trunion and brgs are.... Made in China.
Scorpion rockers on the other hand I have run on everything. They are one of (if not the) best stud mounted rocker you can buy. Lifetime guarentee and made in the USA.
Will
OK for low spring pressure and mild cams (and I have used a few sets as such with no problems) but I wouldn't use them on anything serious. Look at how small the trunion and brgs are.... Made in China.
Scorpion rockers on the other hand I have run on everything. They are one of (if not the) best stud mounted rocker you can buy. Lifetime guarentee and made in the USA.
Will
Thread Starter
Burning Brakes
Joined: Mar 2002
Posts: 1,035
Likes: 0
From: Atlanta Ga
The PRW house brand rockers are made by Cal Auto Transpeed (CAT).
OK for low spring pressure and mild cams (and I have used a few sets as such with no problems) but I wouldn't use them on anything serious. Look at how small the trunion and brgs are.... Made in China.
Scorpion rockers on the other hand I have run on everything. They are one of (if not the) best stud mounted rocker you can buy. Lifetime guarentee and made in the USA.
Will
OK for low spring pressure and mild cams (and I have used a few sets as such with no problems) but I wouldn't use them on anything serious. Look at how small the trunion and brgs are.... Made in China.
Scorpion rockers on the other hand I have run on everything. They are one of (if not the) best stud mounted rocker you can buy. Lifetime guarentee and made in the USA.
Will
Good to know, this build is a stock L98 cam and I'm stepping up to the LT4 spring only due to going to a 1.6 RR, so I guess I could go with there PRW's. I think it would be worth a little more for piece of mind to see how much the Scorpions would be, then if I ever get greedy and want a cam
I'm set.
Thread Starter
Burning Brakes
Joined: Mar 2002
Posts: 1,035
Likes: 0
From: Atlanta Ga
Hope recklessdriver will chime in as he has used these???? I do know I need the "narrow" design for these heads. I'm prepared to remove the drip tabs, I think that is a given with the 1.6's
Safety Car
Joined: Apr 2005
Posts: 3,624
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From: Dale City VA
Sorry, I lost track of the thread for a few days.
I've used a few sets of these CAT rockers before but never tried to fit them inside of the Corvette magnesium rocker covers. They do have a pretty narrow body and IMO should fit inside of the stock magnesium rocker covers but you will definatly have to cut the drip tabs off... Also I know on on the stamped steel B and F body rocker covers you have to trim the back side of the support bracing of the center hold down bolt tubes for clearance on the trunion.
Who are you buying these from in Atlanta? I know a number of engine builders and machine shops in the area.
Will
Thread Starter
Burning Brakes
Joined: Mar 2002
Posts: 1,035
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From: Atlanta Ga
rkless,
Thanks for the added information. I'm working with D&A in Canton, they do build engines for some of the guys who are racing at Dixie Speedway, local 1/2 mile dirt track stuff. They are GM certified to rebuild and seal race engines. They have told me since then that are using these PRW rockers currently on several motors racing out there and thus far no issues. These engines are spinning about 7200 with far more lift than I will run.
Thanks for the added information. I'm working with D&A in Canton, they do build engines for some of the guys who are racing at Dixie Speedway, local 1/2 mile dirt track stuff. They are GM certified to rebuild and seal race engines. They have told me since then that are using these PRW rockers currently on several motors racing out there and thus far no issues. These engines are spinning about 7200 with far more lift than I will run.
Racer
Joined: Jul 2008
Posts: 317
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http://store.summitracing.com/partde...6&autoview=sku
hijacking of thread, are these summits rebadged comp cams? Or are they Chinese junk?
hijacking of thread, are these summits rebadged comp cams? Or are they Chinese junk?
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
http://store.summitracing.com/partde...6&autoview=sku
hijacking of thread, are these summits rebadged comp cams? Or are they Chinese junk?
hijacking of thread, are these summits rebadged comp cams? Or are they Chinese junk?
Plenty of folks are running them and with the mild spring pressure on most Hyd roller cams I don't think you would have any problems.... However I'd like to add for the money those Summit rockers cost you can buy a set of Scorpion rockers.
Will
