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| | | | Joined: Apr 2005 Posts: 242 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 242 | When installing a 1955-62 235 or 261 full pressure engine in place of a 1937-54 216 or 235 engine, this conversion allows you to put the early style pump on the later engine.
In the past modifying the 1955-62 water pump was done but required a press to force the hub further back on the shaft, then the hardened shaft required being cut off. Additionally a special pulley and fan was required. After all that the pump and fan still sat 3" lower than the 216/early 235 pump and that could lead to overheating and possible fan hum.
By using my adapter with a 1941-54 water pump, the pump is put back in the stock location*. If you need to replace the water pump in the future you can buy an over-the-counter pump and install it without modification.
One other advantage of using this adapter and a stock pump is the stock lower radiator hose can be used. The modified 1955-62 pump has a larger connection for the lower hose so a special hose is needed. Ebay Item Number 140456073982
| | | | | Joined: Dec 2010 Posts: 97 'Bolter | | 'Bolter Joined: Dec 2010 Posts: 97 | Short answer : Yes, and it works as advertised.
Longer answer: There have been several threads about pre68Dave's adapter and I don't recall anyone saying anything negative beyond questioning whether it was more effective to use the "short pump" or the adapter plate. His instructions do point out that you will need to drill and tap a couple of holes in your block. He is also clear that you need to use the 41-54 pump (two large holes in the pump's back plate) not the 37-40 pump (single large hole in the pump's back plate) and appropriate pullies. In other words, if you follow the instructions you should be fine.
It is possible to make a similar plate for the 37-40 pumps but bolt placement is touchier - unless you need the 37-40 pump for some special reason the 41-54 pump with pre68Dave's plate is easier.
Pre68Dave is a member at Stovebolt and provides sound advice. | | |
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