▁Ross a - type ▁single - cam ▁ 3 . 0 - lit re ▁engine ▁was ▁supplied ▁by ▁six ▁We ber ▁ 3 8 ▁DC N ▁car b ure t ors ▁and ▁produced ▁ 3 1 0   b hp ▁at ▁ 7 , 5 0 0 ▁r pm . ▁This ▁was ▁the ▁first ▁time ▁a ▁V 1 2 ▁engine ▁was ▁mounted ▁in ▁the ▁rear ▁of ▁a ▁Ferr ari ▁sports ▁racing ▁car . ▁ ▁The ▁ 2 5 0 ▁P ▁achieved ▁immediate ▁success ▁on ▁the ▁rac et rack , ▁winning ▁the ▁ 1 9 6 3 ▁ 2 4 ▁H ours ▁of ▁Le ▁Mans , ▁ 1 2 ▁H ours ▁of ▁Seb ring , ▁ 1 0 0 0 ▁km ▁N ür bur gr ing , ▁and ▁Canadian ▁Grand ▁Prix . ▁The ▁cars ▁were ▁rac ed ▁by ▁Sc ud eria ▁Ferr ari ▁in ▁Europe ▁and ▁N ART ▁in ▁the ▁Amer icas . ▁Notable ▁drivers ▁included ▁John ▁Sur te es , ▁Lud ov ico ▁Sc arf io itt i , ▁Wil ly ▁M air esse , ▁Lorenzo ▁Band ini ▁and ▁Pedro ▁Rod rig uez . ▁ ▁In ▁total ▁Ferr ari ▁produced ▁four ▁ 2 5 0 ▁P ▁ch ass is ▁( serial ▁numbers ▁ 0 8 1 0 , ▁ 0 8 1 2 , ▁ 0 8 1 4 ▁and ▁ 0 8 1 6 ) ▁and ▁one ▁development ▁m ule ▁based ▁on ▁a ▁Ferr ari ▁ 2 4 6 ▁SP ▁ch ass is ▁( number ▁ 0 7 9 6 ). ▁All