New Roller Rockers Too Good to Be True?

[Old School]

These roller rockers are on eBay and seem to be too good to be true. The seller claims to have had them made for 348-409 applications. He claims these will clear the valve covers and require NO MILLING OF THE STUD BOSSES. Says they will work with the stock pinned 3/8's stud. He has installed them of both 690 and 583 heads under stiff Isky springs with no modifications or problems.

He’s a new seller to eBay and from Southern Calif. I’m wondering if any the members here have purchased them or heard about them. If so, are the claims true?

I don't know how to post the dirrect URL link. The eBay item number is:130082728376


Mick

[1958 delivery]

He's not new to ebay, been a member for a couple of years. Other than that I don't know anything about the rockers. I would ask if they are the actual 348/409 ratio or actually made for a BB or SB application.
Do the Scorpion rockers interfere with the valve covers?

[Tom Kochtanek]

Here's the link;

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=130082728376&ru=http%3A%2F%2Fmotors.search.ebay.com%3A80%2F%3Fs ofindtype%3D22%26sofocus%3Dpf%26fisc%3Dc6001%26pfi d%3D2473%26alist%3Da39%252Ca41%252Ca38v1y%252Ca38v 2y%252Ca10239%252Ca3801%252Ca85%252Ca10246%252Ca33 512%252Ca10241%252Ca10244%252Ca39705%26gcs%3D13%26 a39%3D-24%26a41%3D-24%26a38v1y%3D%26a38v2y%3D%26a10239%3D-24%26satitle%3D130082728376%26sadis%3D500%26fpos%3 D65203%26fsct%3D%26fsop%3D1%2526fsoo%253D1%26fcl%3 D3%26frpp%3D50%26fvi%3D1

TomK

[ROYALOAK62]

Why is he selling only 10 rockers? I always need 16 for my 409.

Dave

[Old School]

Thanks Tom for the link... He has 10 sets of 16 rockers each. They are 1.7 ratio.
SCORPIN AND ALL the other rockers that I know of require milling a few hundreds off the stud bosses for clearance and using longer studs.

The claim is these will just bolt on and you are on you way.....

[fatride]

Running with "stiff springs" and a 3/8" stud is an oxymoron.

[32witha409]

I used Crane 15750 rockers but didn't change out the studs. Was this a mistake?
The length of stud above the fulcrum was if I remember correctly .375 +/-.
I havn't had any issues but should I be concerned?:dunno My spring pressures are 127# seat and 285 open @.566 valve lift on the exhaust.

Thanks,
Robert

[CDNpontiac409guy]

Robert, in my experience, the Crane rockers never cause a problem. Yes, they're a little more money. You get what you pay for. They're less bulky, meaning lighter ( we go faster:deal )... heck, they even LOOK better:deal .

I haven't been impressed with the Scorpion ( or other "knock-offs" ):yawn:
All I hear is that they clear NOTHING, and make a pile of stange noises. This CAN'T be good for valve train stability.

[32witha409]

Aubrey,
I agree, the Crane Gold Race rockers are my preference. I have put them on many motors from mild to wild and love them. My only concern was the rocker lock nut thread engagment. It was less with the Cranes then with the stock ones.
I do like to stick with parts I have had good builds with.

Robert

[fatride]

I used Crane 15750 rockers but didn't change out the studs. Was this a mistake?
The length of stud above the fulcrum was if I remember correctly .375 +/-.
I havn't had any issues but should I be concerned?:dunno My spring pressures are 127# seat and 285 open @.566 valve lift on the exhaust.

Thanks,
Robert

Heck, that's not stiff! When I refere to stiff spring pressures, I am talking 350 lbs and beoynd.

[IgnitionMan]

Can't you people spot Pro-Comp trash yet?

[32witha409]

Heck, that's not stiff! When I refere to stiff spring pressures, I am talking 350 lbs and beoynd.

Fatride,
I was not saying 280 is by any means stiff, and I added them for referance. I was simply concerned with thread engagement. The tensil strength of a good quality 3/8 bolt is greater than 5000#. Simply wanted to know if any one had experience with stud failure with a similer setup.
Thanks
Robert

[rstreet]

Can't you people spot Pro-Comp trash yet?

I'm glad you're still around keeping watch on us:rolleyes: :rolleyes: Hey while you're here does a pertronics "module" require 12 volts or will it work correctlywith the factory reduced points voltage "IYO"
Thanks
Robert
p.s. Are you coming to Norwalk to give tech tips??

[Tom Kochtanek]

For what it's worth, I sent the guy a note asking for ratios and any references he might have. He responded that they are 1.7 and that CH Enterprises (Harvey) was using them in his builds.

Not sure what "Pro -Comp" is. Can anyone enlighten me? Always willing to learn something!

Best,
TomK

[fatride]

Fatride,
I was not saying 280 is by any means stiff, and I added them for referance. I was simply concerned with thread engagement. The tensil strength of a good quality 3/8 bolt is greater than 5000#. Simply wanted to know if any one had experience with stud failure with a similer setup.
Thanks
Robert

Robert, I did have 3/8" stud failure. I used what is called a bottle neck type poly lock on my 348 engine with 3/8" Mr Gasket screw in studs. The poly locks were only engaging the upper 1/3 of the threads of the stud. At the time I was running around 350 lbs of spring pressure. This was too much for the 3/8" stud and would break off the tops of them. At the time I cured the problem by changing out the poly locks to stock type lock nuts.

[fatride]

I'm glad you're still around keeping watch on us:rolleyes: :rolleyes: Hey while you're here does a pertronics "module" require 12 volts or will it work correctlywith the factory reduced points voltage "IYO"
Thanks
Robert
p.s. Are you coming to Norwalk to give tech tips??

I'll answer if you don't mind? Pertronix Ignitor requires 12 volts.

[IgnitionMan]

I'll correct that, if you don'tg mind, first series "Ignitor" uses the stock factory ballast resistor or resistor wire, LS and II, well, I've heard both ways, but only seen them live with resisted voltages. No matter, they don't make enough output voltage to be effective over a new set of points, no matter the model Ignitor it is.

[1958 delivery]

I've been running Protronix for some time with perfect success (street cars) They recomend 12V.

[1958 delivery]

For what it's worth, I sent the guy a note asking for ratios and any references he might have. He responded that they are 1.7 and that CH Enterprises (Harvey) was using them in his builds.

Not sure what "Pro -Comp" is. Can anyone enlighten me? Always willing to learn something!

Best,
TomK


For what it's worth: ProComp is located in Calif. They 're Australian owned, I believe. But their stuff is pretty much made in Asia. There is a lot of good Asian parts and some not so good. An ex-salesman from a company I do business with recently went to work for ProComp, he called me to ask if I was interested in buying from them. Most of their stuff is different from my current inventory, but he gave me the "good" guy pricing. First thing I did was check what their stuff was selling for on Ebay. I found most of what he offered me to be selling for almost the exact same WD pricing I got. Either he didn't give me the lowest WD price or the company itself is selling on Ebay. Either way I didn't buy from them.
I know of a few "wholesale only" suppliers that conjur up a fictious name and dump their stuff on Ebay for the WD price. Not a good sales practice.
There are some things in the ProComp line that I may purchase in the future. Then again maybe not.
I don't know if those rockers are ProComp or not.

[fatride]

I'll correct that, if you don'tg mind, first series "Ignitor" uses the stock factory ballast resistor or resistor wire, LS and II, well, I've heard both ways, but only seen them live with resisted voltages. No matter, they don't make enough output voltage to be effective over a new set of points, no matter the model Ignitor it is.


Hell no, I dont mind! Can't remember which one I have but I've had it for over 10 years, Insructions said 12 volts so that's what I did. Ran fine through two different engines, probably over 20,000 miles. Still keep it in the trunk for a spare! Click on the thumb nail and use the magnifyer tool to read. If you can't read this I'll Email you the sheet.

[jim_ss409]

This is a little off the topic but I just thought I'd share my experiences with a "good deal" on E-bay. My Profesional Products damper started to fall apart after only a few hundred miles. I've since noticed that I'm not the only one... http://speedtalk.com/forum/viewtopic.php?t=5633&highlight=profesional+products
Mine doesn't look as bad as some of the others but it was wobbling badly.

[IgnitionMan]

YES, those rockers are Pro-Comp junk. YES, Peter and his son sell their stuff on Sleaze-Bay, against their own dealers, and he will make ANYONE a dealer, ANYONE, including any of you. Peter claims all the parts are made in Australia, but a friend of mine that owns a rebuilding facility in So. Cal., bought some of his crap stuff, and got the usual Peter/Pro-Comp run around when the major part of those products were new defective.. So...he asked around of his suppliers of parts in China, and found the factory, IN CHINA, that Peter/Pro-Comp uses.

People in Australia and New Zealand, many unhappy with Pro-Comp users, report it takes using up to 5 replacement parts before Peter will refund their money.

Many people that are Pro-Comp dealers, are despirately trying to sell off their inventories, so they won't have to contend with Peter's ongoing warrantee problems.

PerTronix, well...la-de-dah! I KNOW the first series uses the stock resistor setup, later ones, who cares. If you want one to play with, come get one out of one of the 7, 55 gallon drums of toasted ones I have removed in the last 14 years, they are free. PerTronix used to be called Per-Lux, before Jim Hairston bought it. Per-Lux was just as bad as a PerTronix is today, no change better.

Don't like what I have written here, too bad. I have just as much right to tell it exactly the way it is, as others have to post their replies.

[Rusty Everitt]

Ignitionman, I like what you have written and hope you continue telling it like it is, many of us want to hear hands on/experience opinions. Keep up the good work.
Rusty

[1958 delivery]

Ignition man, it IS good to hear your opinion. But why get upset? Life is too short.

[Old School]

Ignition Man: I started this thread and you have provided the answer I was looking for..

As usual, if it sounds too good to be true it probably isn’t true.

Thanks, you saved me from making a huge mistake.

BTW, the 409 timing is still dead on and running cool.. Thanks for all your help.

Mick