I suppose it could be done , the big problem is getting to all the rod caps & getting them out of the way ., not so bad coming out but going back in would be very difficult , you would have to hold a 75 lb crank up while positioning the rods so the crank could be held up with the caps . It would be easier if the heads were off so the pistons could be removed & then re-installed after the crank is in place .