I just picked up a 6speed from a buddy of mine I traded an oliver oc3 for it whith a bad motor my ? Is I've got an iron giant2. Sittin here for when I do my head wich is gonnoa be pretty quick will I have to order another clutch now the ig2 has the 1 and 3/8 input and is a 13 in flywheel will it work with the 5600 or is it not worth havin the 6th gear

 

i dunno about the shaft sizes and stuff. but when i read up about the 5600, i heard that it was really nice for hauling alot. it was much heavier duty and the gear spred was nicer. i think that if you don't haul alot you wouldn't need it and the less gears would make for a easier ride around town.

 

I tow a trailer damn near every day

 

then i would definetly do the 5600 conversion. i read really good post from haulers about it. just maybe do a search and found out. i know the input shaft is bigger than the 4500, but thats all i remember.

 

here ya go bud..........its in there man

https://www.dieselbombers.com/5-9l-1...-12-valve.html