Quote:
Originally Posted by
warubozu 
The 1964-65 race Hemi and 1966-71 street Hemi (2nd generation Hemi's) has a 4.25" bore x 3.75" stroke. The race Hemi has bigger compression ratio of 12.5:1 compared to 10.25:1 of the street Hemi.
Very kool my friend, thanks so much