After grinding the ef out of my heads, there is no way I can make my 7/16 push rods fit the RB/B1 Original combo.. Just yesterday I punched thru the intake port trying to gain that little bit of clearance I needed..

So after doing some research and talking with our friend CAB.. It sounds like the Isky Red-Zone roller lifter with the .180 intake offset is what I need to straighten this whole thing out..

However from my peabrain point of view, I would think there is too much side load on the wheel with .800 lift and 850 lbs open springs..

What's your opinion and is there any historical data to back up their reliability?

Thanks