Mopar 360 LA and 5.9 Magnum Ductile Iron 4 Bolt Main Cap Set – New

I have a of new set of 4 ductile iron main caps for Mopar 360 LA or 5.9 Magnum blocks. These are Mopar Performance caps. I have The sets include the first 4 main caps. The center 3 caps are 4 bolt main. These are the same caps that came standard on R3 4 bolt blocks. I have installed these caps on a 340 before by milling off the ends of the center caps to leave them 2 bolt. Stock bloicks do not have sufficient material in the main web for the outer 1/2" bolts.  See pictures for the 3 modified center caps installed on a 340 stroker engine. These caps are more stout than the stock caps and are an excellent upgrade for any high performance build.  A line bore will be needed when installing new caps as well as some machining for the thrust bearing on the #3 cap.

Price is $320 shipped per set in the lower 48 states.