Quote:
Originally Posted by blackadder
Thanks. I noticed that Eagle had the option of either pressed or floating and was curious. I am planning a 421 build and I havnt tore down the engine yet but I expect there is not grooves for C clips in the pistons. Also another question if I may. The bore of a 421 and 389 are the same at 4.063. What are the difference in pistons or are they interchangable? Is skirt length or crown design different enough to make them non interchangable? I know that 400 and 428 pistons although the same bore have different crowns with 428 being dished. Also thoughts on Eagle rods as options here are quite limited.
|
Eagle rods are usually a good choice. 389 and 421 pistons have different compression heights (placement of the wrist pin relative to the piston top) they won't interchange.