[Eljaro]

Keith build a 482 Aluminum motor for me , using a Pond block and I chose hydraulic Roller lifters and cam to go with it. All I had to do was put in stronger springs as per Crane (the maker of the lifters) recommendation, to keep up with the heavier weight of the lifters. So far very good response, my limiter is set at 6300 rpm, and I regularly rev up to the limit.
The aluminum flywheel and the Webers also help to make this engine very, very lively.
I did have a solid lifter and cam before in my 427CO , and had two times the pushrods break, once ruining a rocker and the other the cup fell inside the engine and was banging around inside hitting and damaging a cam lobe, a lifter and cylinder walls in the process.So the hammering Rick talks about is a fact and can cause breakage sooner or later.
I can only recommend roller hydraulic after those experiences. Engine sounds smooth and is less noisy too.