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AOrolfo
02-21-2012, 05:11 PM
im reading stuff on projectzerog n maybe im stupid but im a little confused on whats interchangeable n whats not,, can anyone tell me what i cant swap from a 63 to my 64?

tektic
08-09-2013, 08:39 AM
4g64 has 86.5mm bore and 100mm stroke
4g63 has 85mm bore and 88mm stroke

The rods in both engines are same 150mm