I have a 1971 440 long block that I bought without connecting rods and pistons. I recently purchased 8 rods through the mail
· casting number: 1851535 LY on all 8 rods
· on the opposite side of the rods, the DF numbers varied.
· Stroke: all had the same stroke, but some had more metal above the piston pin than others.
· The DF numbers probably mean different runs and different years, although it would be interesting to know what DF stands for. The rods are...
440 Connecting Rods, DF & Balancing ?
