Good luck. Good rocker arms are now super expensive. Cheap rocker arms are often a problem just waiting to happen. You can cheat a little bit if it is a low RPM street engine that doesn't have much spring pressure but you still need to be careful. The old nodular iron design was good for that application but Isky and Crane both stopped making them. We usually go with Comp steel rocker arms for the street guys and T&D for the race guys. Those two designs both work really well but they are a lot more expensive now than they used to be.

Let's clear something up about those old Isky and Crane rockers. The issue was not so much that they weren't bushed and it was "iron on steel", in fact the early 413 and 426 Max Wedge motors all came with unbushed iron adjustable rockers. The "root" of the problem was the thin stock shafts that went oval after they'd been off and on a couple times or were overtightened and subsequently caused the rockers to bind and gall the shafts and rockers. The same would have occurred had they been bushed. The solution back in the day was simple and inexpensive - you bought a set of TRW replacement shafts which were both thicker and machined (which stock shafts were not) and rumout had it they were worth 10 HP just because they were more stable. Even today, with a good set of shafts there is no need to shy away from a nice set of Iskys or Cranes for anything but a high lift race cam.

Every brand of Mopar hydraulic roller lifters I have used, not many sets, have sounded a lot like the old SB Chevy .030-.030 Duntov solid lifer cams and lifters

Let's clear something up about those old Isky and Crane rockers. The issue was not so much that they weren't bushed and it was "iron on steel", in fact the early 413 and 426 Max Wedge motors all came with unbushed iron adjustable rockers. The "root" of the problem was the thin stock shafts that went oval after they'd been off and on a couple times or were overtightened and subsequently caused the rockers to bind and gall the shafts and rockers. The same would have occurred had they been bushed. The solution back in the day was simple and inexpensive - you bought a set of TRW replacement shafts which were both thicker and machined (which stock shafts were not) and rumout had it they were worth 10 HP just because they were more stable. Even today, with a good set of shafts there is no need to shy away from a nice set of Iskys or Cranes for anything but a high lift race cam.

You didn't say how much cam he is running, but I get the impression he's not trying to build a Pro Mod engine. Since he has Stealth heads those stainless roller rockers from 440 Source would probably be a good bet. The price is right, the quality looks good. Sure, we don't have 10 years of history with them running .750" lift cams turning 8,000 rpms, but I get the impression that's not what your customer is wanting to do. I mocked up the same setup with stock pushrods and hydraulic lifters and it looked ok to me. By the way, I prefer bushed rockers also.

This thread is about ROCKERS

This thread is about ROCKERS

I actually mentioned I was using flat tippets because the last set of hyd rollers lifters were too noisy for my customer.