Ok trying to find some info on the cast numbers and numbers that have been written on a 4 bolt crate engine I have, The block cast number is 10066038, crank is 93426651 then written in marker pen is F7D on #4 crank throw and FC on number 5. The pistons have 9342288 and rods have 0519072135115 but on each big end they have been marked with marker pen also. # 1 92/92 # 2 86/86 #3 80/80 #4 42/42 #5 15/15 #6 39/39 #7 38/38 #8 71/71. Cam has K34 274391
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