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ok i got a motor for my kart m#400160d s# 14-15746 and it has a mre .008 hand stamped in the block what motor is this and whats up with the stamping i also have a mac 450 chain saw would it be better to put the parts on the saw or use the other what kinda power am i looking at out of them thanks

mac experts please help ti id this thing i tryed to post pic but i couldent

I just typed mcculloch 400160 in to google and got this mc49E http://www.macbobaust.com/mac49rookie.html
the 450 is a 87cc saw some saws dont have all the ports drilled that the kart motors do. some use the 87cc saw motors to biuld a cheater 49 motor

thank u for ur help so this 49e is rare whats it worth my goal is to put twin motors on my kart dont care what 2 so my plan was to make a motor out of the 450 saw and use the 49e but that wont work because the stroke ant the same so maby i can sell the 49e and get another saw or sell saw and get another 49 also where can i get parts to convert saw to a kart motor