You can't use stock roller lifters in a pre-87 block. The factory invented some bizarre twisted nightmare hallucination of a mess that looks like somebody's college freshman engineering project that requires modifying the block casting as well as every single other part it touches, instead of simply adopting what all the rest of the world had already been doing successfully for decades. So, there's no way to put that stupid "spider" POS in the early block, which the factory's goofy roller lifters require. Use what is now referred to as "retrofit" roller lifters. These have an incredibly simple mechanism for keeping the lifters from turning: they are connected in pairs for each cylinder by way of a link bar.
1. You need Comp part # 7809 push rods. I have a set laying around that I will sell.
2. I'm not sure whether an early-style timing gear will fit correctly on a factory roller cam (again, the factory's moronic system required modifying the cam as well as the block). I know for certain that a factory roller timing gear (also different!!!) will NOT work in an early block because it will allow the cam to slide about 3/16" too far into the block. Call Comp or Lunati or Ultradyne or Crane, some one of them will no doubt be able to supply you with the correct timing set if any such thing exists.
3. Whatever timing chain you can find that is (a) the right thickness to fit the early block without the factory's funky retainer plate, and (b) the right inner diameter to fit the factory's altered camshaft nose. When you find such a timing gear, you'll need a cam button, which any timing gear will accept.
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