Well for the price of an R3 you could get a 6.1 rotating assembly. Oh by the way that comes with a block and assembled Matt

which block can handle the most power? Until they are truly tested I would stick with the Jr. How much are the new Mopar aluminum gen III block?



Some of the forced induction are making up around 1200 hp.I think the 6.1 is the stronger one but BES did use a 5.7 for their Engine Master Challenge build up. 700 hp out of a 417cid on pump gas with a hydraulic.
The aluminum blocks are 4000.00 to 4500.00. Matt