Inliners International Forums General Discussion Engines GM 4 cylinders 151 153 181

Today's lesson. Some 181 cranks have a one piece rear main seal and some use the older 2 piece seal. Some use rods with a bottom end width equal to the sixes and some are the same width as V8s. I thought the one piece seal went with the narrow rods. It seems that some 2 piece seal cranks use narrow rods. It appears that I have one of those. Oh well, those rods are easier to find. I'm going to take a good look at V8 rods.