[SOLD] 340 and 360 Ductile Iron 4 Bolt Main Cap Sets - New

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Rocket

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I have a few sets of new ductile iron main caps available. These are Mopar Performance caps. I have sets for both 360 main and 340 main blocks. The sets include all 5 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. 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.

Price is $215 shipped per set in the lower 48 states.

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No issue with the small amount of overhang. They are only wider for a small portion of the outer end of the cap after the register. My machinist has done this many times. He cut off the outer bolt hole as the stock webbing is not thick enough to use the outer bolts. Aftermarket blocks or a TA block have the main webbing meat to use the outer bolt holes.
See picture in add how we installed the middle 3 caps on my 340 Block. I did not have the front cap when I did my build so I used the original number 1 cap. The remaining two bolt caps you see in the picture are much stronger than the stock caps.
 
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