What is the connecting Rod Center to Center Length of your Lotus engine ?
I am finding online its 4.800" or 4.826" .
Crank stroke is 3.000".
Bore size is 3.750".
Did the math and Rod To Stroke Ratio R/S is 1.60 :1.
Seeing fairly high cylinder wall side loading.
Pontiac 455 is 1.57:1.
Skimpy nothing pistons cut down will likely fail fast.