Yes I am. The two outer bolts IMO stabilize the cap. My engine, IF WE ratify our contract, will be starting in a month or so. R3 Non saimese two bolt main. Indy 230 cnc, 4.25 stroke, flat mechanical and 12 to 1 comp. Indy intake and 1020 race demon. Hopefully it doesn't go
I hear ya about that contract stuff, its a real B.S. time right now here
Question for ya- if that R3 is a two bolt block, was it cast with extra material in the main webbing to allow for drilling the 4 bolt mains, or is it the same material thickness there as a production LA block?
Would you add 4 bolt caps to a factory block?
All R3 block have the thick main webbing. I would NOT use four bolt mains on a factory block. I WOULD use the Milodon or something similar Main Cap. It has four bolts but the outer ones are offset and do not break through the main webbing. I don't really consider the Milodon caps as a four bolt cap. More between the two bolt and four bolt. I THINK the early version of the four bolt caps for a factory block were drilled in the centre which weakened the block.
