Hi Everyone,
I've got a bunch of questions as I get ready to plan the engine swap that I need to do. But first, a little background: my truck is a 1953 3100. Right now, it has a 235 that is a 1957 vintage, based on the numbers stamped into the block. This engine does not run, as some of the lifters and pushrods are rusted in place and to each other. I found a replacement engine (a 235 from a 1961 Impala w/cast iron powerglide) that I got running (see earlier posts for those misadventures) and want to install in my truck. As I start to think about what I need to do to get ready, I've realized that I'll need to do some work to get the truck and engine ready for the transplant.
1. Water pump: After doing some research here, I realized that I had a water pump issue. Based on that research, I don't know which way to go (short shaft pump or adapter plate with correct year pump). I'm confused on which way to go here because I am thinking of using an electric fan, not the pulley based original fan. I had read somewhere that switching to the electric fan would give me a couple of horse power gain. Not sure if that is true or not? I'm also confused because the pump that is on the non-running engine appears to be one of the long shaft pumps. I'm guessing that whoever put that engine in the truck did some old school trick to make it fit. The radiator and mount appear to be unmolested.
2. I also realized that I have some holes to drill in the mounting plate or I need to replace it with an earlier one that is already drilled. I am wondering, if I have to remove the water pump, would I be able to drill the mounting holes from above? Right now, it seems like the only way to do the drilling, with the plate still installed on the engine is to access it from the bottom. Or am I wrong in trying to do the drilling with the plate installed?
3. 12v conversion: I've already decided to make the truck 12v and I'll be using an alternator. Those decisions will drive me to update bulbs and get resistors for the gauges. When I get to refurbishing the gas tank, I'll update the sending unit for 12v. The alternator that I'll use will have plenty of capacity for driving the electric cooling fan.
4. Removal of clutch/flywheel/bell housing for transplant to the new engine before installation into the truck. Can I reuse the throwout bearing? Is there something else in this area that I am overlooking?
5. ????
I know that I am not thinking of everything, so please, any help that you all can give me in figuring out what I am missing would be greatly appreciated!
Thanks!
