I also have a 4.250 stroke crank for my 488 hemi......can you get a piston with low enuff compression to use a 7.1 rod with a blower?

1970 barracuda convert. 1 of 59
1970 pro street A.A.R. clone (panther pink)
1971 charger
2015 hellcat challenger. Redline red
2014 quad cab 4x4 ram 8 speed hemi