j par
Well-hung Member
Proform rockers part number 66869
Have any members out there tried these?
Have any members out there tried these?
I only have about a 540 lift and 350 pounds of spring pressure it's pretty far under their ratings. I don't see that stroker doing much more than six grand or so rpms.
No way in hell would I replace those good iron rockers with cheap *** Proforms. But if that's what you want, go for it.
so like my original question you have used these and broke them? I mean I was really just hoping to hear somebody who broke one or have a serious problem with one? I realize they're not too expensive and ninety nine times out of a hundred that means they're not the greatest but it also doesn't mean they're going to break easy either?
No. I haven't used them and I won't. I have however used the stock 273 rockers modified like I outlined with a .595 lift solid. They will take the abuse of a .600 plus lift roller modified like I talked about.
I don't understand why anybody would rather spend about the same amount to make a bullet proof rocker on some total chinkesium. I just makes no sense to me. One way you will have a foolproof set of rockers that will last a lifetime through as many upgrades as you want. The other way, you have some overseas rockers that may work out and may not.
I know which way I would go and it's not the ProForms. But hay, it's your project and your money, not mine. I hope they work out for you.
I personally haven't ran any but I've installed them on some buddies cars fords and Chevy small blocks with mildish cams they haven't had any trouble out of them yet and the ford sees regular abuse just inspect them any that may be subject just send them back I've heard proform/ speedmaster have pretty decent customer service
He (the OP) asked for someone that has actually used them, and you have and it broke. So did your buddy. The OP did NOT want to hear this!!! He has his mind set on using them and wants somebody to say "that was a good choice, Johnny" ... LOL.My proforms cracked one after about 1 year of use, 500lift, 350spring pressure, my buddy broke one too, and in the process one of the adjusting screws snapped and fell down on the camshaft, cracked a lifter, destroyed the lifterbore in his 340. He was running a performer rpm camshaft. I dont thrust them any more.
Look for used good ones or step up to 450 dollar and buy the ones from mancini.