13/4 intake

[old Tom]

Originally Posted by KiWinUS

I have an old Bonneville engine I have owned for over 25 years with the most amazing port job ever. It has 1.800 intake valves and 1.700 exhaust. 3.375 x 4.250. Had a Potvin Eliminator cam. I may have to dig it out and resurrect this gem. Unfortunately I don’t know whose car. Block has 4 sleeves so could tell some stories. Both valve seats ground into block.

what is the CI of that motor?