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I plugged in a 1985 f150 4x4 with a 300 six into Autozone's site. They only had one flexplate for a c6, the 164 tooth 14.25 inches in diameter. The other flexplate, 164 tooth 14.23 inches in diameter is listed for a AOD or a C5 transmission.
good news though. my 300 i6 looks SUPER clean inside. I pulled the valve cover and oil pan and it looks beautiful in there. Whoever had this before me must of done oil changes like church sundays....every time on time. I got the flex plate and mounts coming today for it and I picked up an engine stand. Now to just get this old girl freshened up with some new pistons and rings and bearings since I have em all, and new seals and a coat of paint and a HEI dizzy which I also have on the way. Funny thing is I have to do this in the weirdest place....from the back of my rental truck, into my bullnose....this parking lot is all rocks at this motel. I already asked for permission too and the manager said I'm good Anyone have tips for getting the damn coolant out of the block? I was going to try to use my air compressor through one of the heater hoses and have it go into a bucket since its brand new perfectly good coolant....
I was also thinking about my radiator situation. I know the one I have on my 351 has the outlet and inlet swapped but I would like to use it since its a big giant nice 4 row one and this is truly a big truck, not a pickup. I was thinking I could use a few pieces of galvanized pipe or copper...etc and flare the ends to make an adapter/extension to go from the i6 hoses to the 351 hoses so I can use it. has anyone else done this? If it were a stock rad, I'd just replace it but its brand new 4 core