proform rockers

[moparracer54]

Are these things worth a crap?? The price is right but if they're junk I would like to know.

[70AARCuda]

never have used the proform rockers..

but have used a set of the aluminum roller rockers from procomp on a 340 bracket motor for 2 yrs...

[pishta]

Who makes MP, Crane? I got a set of MP 1.6:1 B rockers and they are blue like proform, working fine so far. I dont think "offshore" should be a deal breaker. Even Carillo rods have failed.

[DartGT66]

Depends of the usage. For mild cams, they should be ok, but for serious spring pressures, use something else. The biggest differencies are in materials and manufacturing process and you should ask the manufacturer about the limits. If he can't tell, don't use them. Aluminum is fatigue, it work hardens and craks with enough stress cycles, extruded material is weaker than billet. If steel rockers were made for the 440-1 heads we have, that's what we would use. And that's what I would definitely use in any dual purpose engines that have them available.

[toad490]

To a certan extent the old saying ''you get what you pay for'' is true but that said I think it depends on what your setup is. What would be perfectly good for a hyd cam might not work for a solid roller with high spring pressure.

Pishta, I believe at one time Dove made MP rockers, I'm not sure if that's still true or not.

Dart posted while I was doing mine and he says it alot better.

[MerrittRacing]

I had a friend that ran a brand new set of these on a 340 in a dirt car. He was running a Hughes solid cam with about 335-340lbs open.. They lasted for about 12 nights and then started breaking... They would break right in the center of the shaft part of the rocker. The bottom half would stay held down by the rocker shaft and the top would just be flopping around everywhere making all kinds of noise. I have put a few sets on other peoples engines that were hyd camshaft engines and they are still working fine.. I think Proform says a max of 350lbs but I wouldn't put much more than 330 or so on them. Just my 2 cents.

[moparracer54]

Thats all that i needed to hear to shy away from these.......it just sucks knowing a guy has to dish out $400-$500 to get a decent set of rockers. So what brand should a guy go with?

[340_GTS]

Comp Cams makes real nice chromemoly steel roller rockers. After much research, that's what I decided on when I built my 340. No problems ever. Rockers, shafts, and spacers are under $450 for small blocks. Big block sets are around $500.

[fat 360]

I remember reading somewhere that(summit/jegs/something like that) proform rockers where only rated to '480 tho lift.yuck.

[mopar29mod]

I have had the Crane gold rockers on my 318 for years with 508 cam, and the modified has 550 cam with some sealed power alum rockers, so far no issues

[MerrittRacing]

Originally Posted by moparracer54

Thats all that i needed to hear to shy away from these.......it just sucks knowing a guy has to dish out $400-$500 to get a decent set of rockers. So what brand should a guy go with?

The best bang for the buck I he came across is the Crane Gold rockers.. they are really good and will work with alot of spring pressure flawless... I have a set that has been on a big block for 5 years with around 660lbs of open pressure and haven't had a problem with them..

[djswwg]

i agree totally with MerrittRacing-best bang for the buck is still the Crane Golds, very durable and not too pricey.............djs

[70AARCuda]

hope you have a source for crane gold shalft mounted rockers for mopars...

cause crane went out of business about a year ago...

they are not listed with summit and jegs dont list them anymore...

[cageman]

they are back in business again.

[70AARCuda]

ok..but i checked jegs and summit...and nothing is in stock...not even listed

where can they be bought?


found this...not quite in business yet....and i am sure making rocker arms for mopars is one of the first thing they will do...>LOL>>>>LOL

http://board.moparts.org/ubbthreads/...page=0&gonew=1

[340_GTS]

What is wrong with the steel ones Comp Cams sells?

[djswwg]

there's really nothing wrong with the Comp rockers, (i've used them) but they cost more and are heavier than the Crane Golds. i called Crane about 2 weeks ago and was told that they are back in business. they are concentrating on getting the cams/lifters available first, then everything else in the catalog will eventually become available again. i'll bet that if your usual supplier ordered a set of the Golds you'd probably get them or at least an estimated delivery date..........djs

[340_GTS]

Originally Posted by djswwg

there's really nothing wrong with the Comp rockers, (i've used them) but they cost more and are heavier than the Crane Golds. ..........djs

I'm not arguing here, but look at this from Comp Cams about the weight issue:
Lose the weight, keep the strength.
COMP Cams Pro Magnum shaft mount roller rocker arms combine the strength of 8650 chromemoly steel and the weight savings of aluminum rockers. COMP Cams took advantage of computer design to simulate the stresses that affect rockers under various operating loads. This allowed the engineers to lessen the rockers' mass at non-critical areas, and strengthen the areas that take the most punishment. The results are rocker arms that are strong where they need to be, and actually weigh 5 percent less at the valve than comparable aluminum rockers.

FYI, as to pricing, the big block Comp Cams steel rocker set with shafts is $500 from Summit.

Cranes for the big block are priced individually, 16 X $36.39 = $582 for just the rockers. (Summit prices).

[cageman]

I dont know if they make the pro magnums for a dodge yet, or am I thinking of onother magnum style, I have been waiting for them to come out, as alum rockers dont hold up at all to circle track use.

[340_GTS]

Originally Posted by cageman

I dont know if they make the pro magnums for a dodge yet, or am I thinking of onother magnum style, I have been waiting for them to come out, as alum rockers dont hold up at all to circle track use.

I have them on my 340. #1322-16. Part number for big blocks is #1321-16. Both show as being in stock at Summit.

[djswwg]

as for pricing, here is Cdn.$ -Comp. #1321-16 $630.93
-Crane #64790-1 $493.99
both are complete sets. as for the weight issue, Comp does not say specifically who's rockers theirs are lighter than, and (read it carefully) it's on the valve end, by 5%. the overall weight, which is what your valve train lives with, may be more. at any rate, we're probably splitting hairs here. both (in my opinion) are quite good quality. over a long time period, the aluminum ones may eventually work harden and crack, but i haven't seen it yet. just my experience.....djs

[pishta]

I may have a line on some SB crane golds, hit me up in a PM. I also got a set of 273 forged mechs.

[JCFcuda]

Those Cranes are,a great rocker for the money. They will be tested if you start to run lift's bigger that 700 and spring pressure over 650.
I have been running mine for 6 years (drag only) 680 lift no problems.
A friend was using them and steped up 705 lift. and started breaking one every couple of weeks. They would just peal of the shaft cracking on the bottom.
Those comps dont like those preesures eather. An other racer i know used them on his SB and he was replacing one of them often. Very high rpms on that motor.

Jim

[DJM]

As for roller tips i have seen them spit out the rollers though and it not a nice thing. I will stilck to the doctile iron non roller.