The Stovebolt Site Forums The Shop Area Engine Shop Water pump adapter

I have a '54 4100(1-1/2 ton) in which i'm putting a '62 235 in. I just recently read that it is recommended that a water pump adapter that uses the earlier '41-54 water pump is better than either buying the shortened '55-62 water pump or shortening the same pump shaft yourself. One reason is that it better aligns the water pump to the center of the radiator for better cooling. Another reason is that the earlier pump already has the correct pulley diameter for the correct ratio to the harmonic balancer pulley(if the one from the original is used). The third reason is that if you need a new water pump, then you can just simply bolt the new one on instead of modifying another one again. What do you fellow stovebolters think?

that is it in a nutshell. just bought one for my 261 that is going in a 46 1/2 ton. got it from pre68dave. have had good communication w/ him prior to purchase.

http://cgi.ebay.com/ebaymotors/1955...torsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

you will need 2 gasket kits 1- 54 kit pump to adapter and 1-62 kit adapter to block.

was also cautioned to make sure when you drill block for adapter DONOT GO MORE THAN INSTRUCTED. will hit passages in block. was suggested to use a self centering bit, has small point at tip of bit, make sure you take the small point into account when measuring the drill depth

I had heard the shortened shaft pump's pulleys tended to slip after being pressed down. but I've been using a shortened shaft pump for years with no trouble. I did add a fan shroud that reduced the temp in half. Amazing difference the fan shroud makes. Noticable.

worse came to worse you could take a page from the dirt track racers or drag racers and run a remote electric water pump

True but they are water passages so it's not the end of the world if you do hit one.