Quote:

---

Head gaskets info for 5.7 6.1 6.4
Who has part#, thickness and bore size for factory head gaskets.
Plus what gaskets to use on what block? Do they all interchange?

---

You must match the gasket to the block your using, meaning if you use a 5.7 block you must use 5.7 head gaskets even if you bolt on a set of 6.1 heads. btw the 5.7 has a right and left hand head gasket and are not interchangable from side to side. The 6.1 block is watered differnt than the 5.7 so if you use 5.7 heads on a 6.1 block you still use 6.1 head gaskets which are interchangable from side to side and depending on piston choice using the 6.1 block with 5.7 heads you may have to widen the chamber and the factory gaskets are .040" thick.